| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 04/25/13 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 04/24/13 | 8-K | Form 8-K: Current report filing | 2 | |
| 04/24/13 | 8-K | Form 8-K: Current report filing | 3 | |
| 04/15/13 | 8-K | Form 8-K: Current report filing | 2 | |
| 04/11/13 | 8-K | Form 8-K: Current report filing | 3 | |
| 03/19/13 | ARS | Form ARS: Annual report to security holders | 88 | |
| 03/18/13 | DEF 14A | Form DEF 14A: Definitive proxy statements | 48 | |
| 02/27/13 | 10-K | Form 10-K: Annual report pursuant to Section 13 and 15(d) |
|
83 |
| 02/25/13 | 8-K | Form 8-K: Current report filing | 2 | |
| 02/14/13 | SC 13G/A | Form SC 13G/A: Schedule filed to report acquisition of beneficial ownership of 5% or more of a class of equity securities by passive investors and certain institutions | 6 |