| 12/12/2008 | 4 | Statement of Changes of Beneficial Ownership | 21 Kb |
| 12/12/2008 | 4 | Statement of Changes of Beneficial Ownership | 21 Kb |
| 12/12/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 12/12/2008 | 4 | Statement of Changes of Beneficial Ownership | 21 Kb |
| 12/12/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 11/20/2008 | 4 | Statement of Changes of Beneficial Ownership | 21 Kb |
| 11/20/2008 | 8-K | Current Report | 395 Kb |
| 11/20/2008 | S-3ASR | Automatic shelf registration statement of securities of well-known seasoned issuers | 709 Kb |
| 11/19/2008 | 4 | Statement of Changes of Beneficial Ownership | 21 Kb |
| 11/19/2008 | 4 | Statement of Changes of Beneficial Ownership | 21 Kb |
| 11/19/2008 | 4 | Statement of Changes of Beneficial Ownership | 20 Kb |
| 11/19/2008 | 4 | Statement of Changes of Beneficial Ownership | 21 Kb |
| 11/19/2008 | 4 | Statement of Changes of Beneficial Ownership | 20 Kb |
| 11/19/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 11/19/2008 | 4 | Statement of Changes of Beneficial Ownership | 19 Kb |
| 11/19/2008 | 4 | Statement of Changes of Beneficial Ownership | 19 Kb |
| 11/17/2008 | 4 | Statement of Changes of Beneficial Ownership | 23 Kb |
| 11/14/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 11/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 11/12/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 11/12/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 11/10/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 11/7/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 11/6/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 11/5/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 11/4/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 10/31/2008 | 4 | Statement of Changes of Beneficial Ownership | 19 Kb |
| 10/23/2008 | 10-Q | Quarterly Report | 514 Kb |
| 10/23/2008 | 8-K | Current Report | 81 Kb |
| 10/23/2008 | 8-K | Current Report | 24 Kb |
| 10/16/2008 | SC 13D | General Statement of Beneficial Ownership | 89 Kb |
| 10/16/2008 | 4 | Statement of Changes of Beneficial Ownership | 24 Kb |
| 10/14/2008 | 3 | Initial Statement of Beneficial Ownership | 18 Kb |
| 10/14/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 10/9/2008 | SC TO-T/A | Other | 39 Kb |
| 10/7/2008 | SC TO-T/A | Other | 36 Kb |
| 10/3/2008 | DEFA14A | Definitive Proxy Statement | 407 Kb |
| 10/1/2008 | 4 | Statement of Changes of Beneficial Ownership | 20 Kb |
| 9/30/2008 | 4 | Statement of Changes of Beneficial Ownership | 20 Kb |
| 9/30/2008 | 4 | Statement of Changes of Beneficial Ownership | 21 Kb |
| 9/30/2008 | 4 | Statement of Changes of Beneficial Ownership | 20 Kb |
| 9/30/2008 | 4 | Statement of Changes of Beneficial Ownership | 20 Kb |
| 9/30/2008 | 4 | Statement of Changes of Beneficial Ownership | 20 Kb |
| 9/30/2008 | 4 | Statement of Changes of Beneficial Ownership | 20 Kb |
| 9/29/2008 | DEF 14A | Definitive Proxy Statement | 866 Kb |
| 9/29/2008 | SC TO-T/A | Other | 47 Kb |
| 9/25/2008 | 8-K | Current Report | 125 Kb |
| 9/22/2008 | 8-K | Current Report | 20 Kb |
| 9/22/2008 | 4 | Statement of Changes of Beneficial Ownership | 21 Kb |
| 9/18/2008 | SC TO-T/A | Other | 229 Kb |
| 9/15/2008 | 4 | Statement of Changes of Beneficial Ownership | 21 Kb |
| 9/15/2008 | 4 | Statement of Changes of Beneficial Ownership | 21 Kb |
| 9/15/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 9/15/2008 | 4 | Statement of Changes of Beneficial Ownership | 21 Kb |
| 9/15/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 9/11/2008 | SC TO-T | Other | 1,336 Kb |
| 9/10/2008 | SC TO-C | Other | 48 Kb |
| 9/8/2008 | 4 | Statement of Changes of Beneficial Ownership | 20 Kb |
| 9/8/2008 | 4 | Statement of Changes of Beneficial Ownership | 20 Kb |
| 9/3/2008 | 4 | Statement of Changes of Beneficial Ownership | 21 Kb |
| 9/3/2008 | 4 | Statement of Changes of Beneficial Ownership | 20 Kb |
| 9/3/2008 | 4 | Statement of Changes of Beneficial Ownership | 21 Kb |
| 9/3/2008 | 4 | Statement of Changes of Beneficial Ownership | 20 Kb |
| 9/3/2008 | 4 | Statement of Changes of Beneficial Ownership | 20 Kb |
| 9/3/2008 | 4 | Statement of Changes of Beneficial Ownership | 20 Kb |
| 9/3/2008 | 4 | Statement of Changes of Beneficial Ownership | 23 Kb |
| 9/3/2008 | 4 | Statement of Changes of Beneficial Ownership | 20 Kb |
| 9/3/2008 | 4 | Statement of Changes of Beneficial Ownership | 21 Kb |
| 9/3/2008 | 4 | Statement of Changes of Beneficial Ownership | 21 Kb |
| 9/3/2008 | 4 | Statement of Changes of Beneficial Ownership | 21 Kb |
| 9/3/2008 | 4/A | Amended Statement of Changes of Beneficial Ownership | 21 Kb |
| 8/29/2008 | SC TO-C | Other | 44 Kb |
| 8/28/2008 | 4/A | Amended Statement of Changes of Beneficial Ownership | 20 Kb |
| 8/28/2008 | 4/A | Amended Statement of Changes of Beneficial Ownership | 21 Kb |
| 8/28/2008 | 4/A | Amended Statement of Changes of Beneficial Ownership | 20 Kb |
| 8/28/2008 | 4/A | Amended Statement of Changes of Beneficial Ownership | 20 Kb |
| 8/28/2008 | 4/A | Amended Statement of Changes of Beneficial Ownership | 20 Kb |
| 8/28/2008 | 4 | Statement of Changes of Beneficial Ownership | 20 Kb |
| 8/19/2008 | 4 | Statement of Changes of Beneficial Ownership | 20 Kb |
| 8/14/2008 | 4 | Statement of Changes of Beneficial Ownership | 20 Kb |
| 8/14/2008 | 4 | Statement of Changes of Beneficial Ownership | 21 Kb |
| 8/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 21 Kb |
| 8/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 21 Kb |
| 8/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 20 Kb |
| 8/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 21 Kb |
| 8/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 20 Kb |
| 8/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 8/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 19 Kb |
| 8/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 19 Kb |
| 8/12/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 8/11/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 8/8/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 8/7/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 8/6/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 8/5/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 8/4/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 8/1/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 8/1/2008 | 8-K | Current Report | 24 Kb |
| 7/31/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 7/31/2008 | 10-K | Annual Report | 931 Kb |
| 7/30/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 7/29/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 7/28/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 7/25/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 7/25/2008 | 8-K | Current Report | 18 Kb |
| 7/24/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 7/23/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 7/22/2008 | 4 | Statement of Changes of Beneficial Ownership | 21 Kb |
| 7/17/2008 | 8-K | Current Report | 202 Kb |
| 7/10/2008 | 5 | Annual Statement of Changes in Beneficial Ownership | 20 Kb |
| 7/10/2008 | 5 | Annual Statement of Changes in Beneficial Ownership | 20 Kb |
| 7/10/2008 | 5 | Annual Statement of Changes in Beneficial Ownership | 20 Kb |
| 7/10/2008 | 5 | Annual Statement of Changes in Beneficial Ownership | 20 Kb |
| 7/10/2008 | 5 | Annual Statement of Changes in Beneficial Ownership | 20 Kb |
| 7/10/2008 | 3 | Initial Statement of Beneficial Ownership | 18 Kb |
| 7/10/2008 | 3 | Initial Statement of Beneficial Ownership | 20 Kb |
| 6/30/2008 | 11-K | Annual Report of Employee Stock Purchase | 71 Kb |
| 6/30/2008 | 11-K | Annual Report of Employee Stock Purchase | 72 Kb |
| 6/30/2008 | 11-K | Annual Report of Employee Stock Purchase | 109 Kb |
| 6/17/2008 | 8-K | Current Report | 33 Kb |
| 6/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 26 Kb |
| 6/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 26 Kb |
| 6/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 27 Kb |
| 6/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 26 Kb |
| 6/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 27 Kb |
| 5/19/2008 | 8-K | Current Report | 32 Kb |
| 5/16/2008 | 4 | Statement of Changes of Beneficial Ownership | 39 Kb |
| 5/16/2008 | 4 | Statement of Changes of Beneficial Ownership | 39 Kb |
| 5/16/2008 | 4 | Statement of Changes of Beneficial Ownership | 26 Kb |
| 5/15/2008 | 4 | Statement of Changes of Beneficial Ownership | 39 Kb |
| 5/15/2008 | 4 | Statement of Changes of Beneficial Ownership | 39 Kb |
| 5/15/2008 | 4 | Statement of Changes of Beneficial Ownership | 31 Kb |
| 5/14/2008 | 4 | Statement of Changes of Beneficial Ownership | 39 Kb |
| 5/14/2008 | 4 | Statement of Changes of Beneficial Ownership | 37 Kb |
| 5/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 38 Kb |
| 5/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 38 Kb |
| 5/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 28 Kb |
| 5/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 24 Kb |
| 5/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 26 Kb |
| 5/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 26 Kb |
| 5/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 25 Kb |
| 5/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 26 Kb |
| 5/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 26 Kb |
| 5/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 27 Kb |
| 5/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 24 Kb |
| 5/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 24 Kb |
| 5/12/2008 | 4 | Statement of Changes of Beneficial Ownership | 24 Kb |
| 5/12/2008 | 4 | Statement of Changes of Beneficial Ownership | 38 Kb |
| 5/12/2008 | 4 | Statement of Changes of Beneficial Ownership | 27 Kb |
| 5/9/2008 | 4 | Statement of Changes of Beneficial Ownership | 32 Kb |
| 5/8/2008 | 4 | Statement of Changes of Beneficial Ownership | 38 Kb |
| 5/8/2008 | 4 | Statement of Changes of Beneficial Ownership | 38 Kb |
| 5/5/2008 | 8-K | Current Report | 47 Kb |
| 5/2/2008 | 425 | Other | 43 Kb |
| 5/2/2008 | 4 | Statement of Changes of Beneficial Ownership | 25 Kb |
| 4/25/2008 | 4 | Statement of Changes of Beneficial Ownership | 31 Kb |
| 4/25/2008 | 425 | Other | 28 Kb |
| 4/25/2008 | 425 | Other | 26 Kb |
| 4/24/2008 | 8-K | Current Report | 103 Kb |
| 4/24/2008 | 8-K | Current Report | 29 Kb |
| 4/24/2008 | 10-Q | Quarterly Report | 473 Kb |
| 4/16/2008 | 4 | Statement of Changes of Beneficial Ownership | 24 Kb |
| 4/10/2008 | 425 | Other | 22 Kb |
| 4/7/2008 | 425 | Other | 45 Kb |
| 4/7/2008 | 425 | Other | 28 Kb |
| 4/7/2008 | 8-K | Current Report | 45 Kb |
| 3/31/2008 | 11-K | Annual Report of Employee Stock Purchase | 52 Kb |
| 3/28/2008 | 3 | Initial Statement of Beneficial Ownership | 27 Kb |
| 3/14/2008 | 4 | Statement of Changes of Beneficial Ownership | 26 Kb |
| 3/14/2008 | 4 | Statement of Changes of Beneficial Ownership | 26 Kb |
| 3/14/2008 | 4 | Statement of Changes of Beneficial Ownership | 27 Kb |
| 3/14/2008 | 4 | Statement of Changes of Beneficial Ownership | 26 Kb |
| 3/14/2008 | 4 | Statement of Changes of Beneficial Ownership | 27 Kb |
| 3/7/2008 | 425 | Other | 29 Kb |
| 3/3/2008 | 425 | Other | 21 Kb |
| 2/28/2008 | 425 | Other | 22 Kb |
| 2/22/2008 | 425 | Other | 46 Kb |
| 2/19/2008 | 425 | Other | 415 Kb |
| 2/14/2008 | 8-K | Current Report | 24 Kb |
| 2/14/2008 | SC 13G/A | Amended Statement of Beneficial Ownership | 35 Kb |
| 2/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 26 Kb |
| 2/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 26 Kb |
| 2/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 25 Kb |
| 2/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 26 Kb |
| 2/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 26 Kb |
| 2/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 27 Kb |
| 2/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 24 Kb |
| 2/13/2008 | 4 | Statement of Changes of Beneficial Ownership | 19 Kb |
| 2/12/2008 | 8-K | Current Report | 41 Kb |
| 2/12/2008 | 425 | Other | 41 Kb |
| 2/11/2008 | 4 | Statement of Changes of Beneficial Ownership | 25 Kb |
| 2/4/2008 | 425 | Other | 55 Kb |
| 2/4/2008 | 425 | Other | 22 Kb |
| 2/4/2008 | 425 | Other | 29 Kb |
| 2/4/2008 | 425 | Other | 3,344 Kb |
| 2/4/2008 | 425 | Other | 264 Kb |
| 2/1/2008 | 425 | Other | 66 Kb |
| 2/1/2008 | 425 | Other | 23 Kb |
| 2/1/2008 | 425 | Other | 1,347 Kb |
| 2/1/2008 | 425 | Other | 189 Kb |
| 2/1/2008 | 8-K | Current Report | 66 Kb |
| 1/24/2008 | 8-K | Current Report | 107 Kb |
| 1/24/2008 | 10-Q | Quarterly Report | 523 Kb |
| 1/23/2008 | 3 | Initial Statement of Beneficial Ownership | 22 Kb |
| 1/23/2008 | 4 | Statement of Changes of Beneficial Ownership | 25 Kb |
| 1/15/2008 | 4 | Statement of Changes of Beneficial Ownership | 20 Kb |
| 1/15/2008 | 4 | Statement of Changes of Beneficial Ownership | 25 Kb |
| 1/15/2008 | SC 13G/A | Amended Statement of Beneficial Ownership | 32 Kb |
| 1/15/2008 | SC 13G/A | Amended Statement of Beneficial Ownership | 35 Kb |
| 1/11/2008 | 8-K | Current Report | 23 Kb |
| 1/8/2008 | 4 | Statement of Changes of Beneficial Ownership | 19 Kb |
| 1/2/2008 | 4 | Statement of Changes of Beneficial Ownership | 25 Kb |
| 1/2/2008 | 4 | Statement of Changes of Beneficial Ownership | 22 Kb |
| 1/2/2008 | 4 | Statement of Changes of Beneficial Ownership | 19 Kb |