| Date Filed | Type | Description | Filer | View |
| 05/10/13 | 10-Q | Quarterly report which provides a continuing view of a company's financial position | |  |
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| 05/08/13 | 8-K | Report of unscheduled material events or corporate event | | |
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| 04/30/13 | 8-K | Report of unscheduled material events or corporate event | | |
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| 04/25/13 | 424B5 | Form of prospectus disclosing information, facts, events covered in both forms 424B2, 424B3 | | |
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| 04/04/13 | 10-K/A | Amendment to a previously filed 10-K | | |
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| 03/22/13 | SC 13D/A | An amendment to a SC 13D filing | | |
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| 03/20/13 | 4 | Statement of changes in beneficial ownership of securities | Kopp LeRoy C | |
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| 03/14/13 | 8-K | Report of unscheduled material events or corporate event | | |
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| 03/12/13 | 4 | Statement of changes in beneficial ownership of securities | Pfeiffer Kennet | |
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| 03/12/13 | 4 | Statement of changes in beneficial ownership of securities | Shelton Adam Lee | |
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| 03/12/13 | 4 | Statement of changes in beneficial ownership of securities | BUCHANAN WILLIAM JAMES | |
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| 03/12/13 | 4 | Statement of changes in beneficial ownership of securities | JOHNSON ROBERT L /CA/ | |
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| 03/12/13 | 4 | Statement of changes in beneficial ownership of securities | QUIRAM JEFFREY A | |
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| 03/08/13 | 10-K | Annual report which provides a comprehensive overview of the company for the past year | | |
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| 03/07/13 | 8-K | Report of unscheduled material events or corporate event | | |
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| 02/12/13 | SC 13G/A | An amendment to the SC 13G filing | | |
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| 02/05/13 | DEF 14A | Official notification to shareholders of matters to be brought to a vote ("Proxy") | | |
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| 02/04/13 | PRER14A | Proxy soliciting materials. Revised preliminary material | | |
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| 01/22/13 | PRE 14A | A preliminary proxy statement providing notification matters to be brought to a vote | | |
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| 01/17/13 | 4 | Statement of changes in beneficial ownership of securities | Pfeiffer Kennet | |
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