| Date Filed | Type | Description | Filer | View |
| 05/22/2013 | 8-K | Report of unscheduled material events or corporate event | |
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| 05/10/2013 | 4 | Statement of changes in beneficial ownership of securities | BUESINGER ROBERT F. |
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| 05/10/2013 | 4 | Statement of changes in beneficial ownership of securities | Wallace Stephen |
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| 05/07/2013 | 10-Q | Quarterly report which provides a continuing view of a company's financial position | |
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| 05/06/2013 | 8-K | Report of unscheduled material events or corporate event | |
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| 04/16/2013 | ARS | An annual report to security holders | |
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| 04/11/2013 | DEF 14A | Official notification to shareholders of matters to be brought to a vote ("Proxy") | |
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| 04/10/2013 | 4 | Statement of changes in beneficial ownership of securities | BUESINGER ROBERT F. |
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| 04/08/2013 | 8-K | Report of unscheduled material events or corporate event | |
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| 03/29/2013 | 8-K | Report of unscheduled material events or corporate event | |
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| 03/26/2013 | 4 | Statement of changes in beneficial ownership of securities | Bender Mark Steven |
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| 03/21/2013 | 4 | Statement of changes in beneficial ownership of securities | Taylor Jeffrey L |
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| 03/18/2013 | 4 | Statement of changes in beneficial ownership of securities | Hansen David R |
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| 03/18/2013 | 4/A | Amendment to a previously filed 4 | Hansen David R |
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| 03/18/2013 | 4 | Statement of changes in beneficial ownership of securities | Mangieri George J |
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