| Filing Date | Document Date | Type | Description | Filer | Downloads |
| 05/22/13 | 05/22/13 | DFAN14A | Additional proxy soliciting materials filed by non-management | |  |
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| 05/20/13 | 05/20/13 | PRER14A | Proxy soliciting materials. Revised preliminary material | |  |
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| 05/20/13 | 05/20/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 05/14/13 | 05/14/13 | DFAN14A | Additional proxy soliciting materials filed by non-management | |  |
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| 05/14/13 | 05/14/13 | DFAN14A | Additional proxy soliciting materials filed by non-management | |  |
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| 05/14/13 | 05/14/13 | DFAN14A | Additional proxy soliciting materials filed by non-management | |  |
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| 05/13/13 | 05/13/13 | DFAN14A | Additional proxy soliciting materials filed by non-management | |  |
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| 05/13/13 | 05/13/13 | DFAN14A | Additional proxy soliciting materials filed by non-management | |  |
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| 05/13/13 | 05/13/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 05/13/13 | 05/13/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 05/13/13 | 05/13/13 | PRER14A | Proxy soliciting materials. Revised preliminary material | |  |
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| 05/10/13 | 05/10/13 | PRER14A | Proxy soliciting materials. Revised preliminary material | |  |
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| 05/10/13 | 05/10/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 05/10/13 | 05/10/13 | DFAN14A | Additional proxy soliciting materials filed by non-management | |  |
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| 05/10/13 | 05/10/13 | DFAN14A | Additional proxy soliciting materials filed by non-management | |  |
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| 05/02/13 | 05/02/13 | PRER14A | Proxy soliciting materials. Revised preliminary material | |  |
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| 04/23/13 | 04/23/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 04/19/13 | 04/19/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 04/19/13 | 04/19/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 04/16/13 | 04/16/13 | DFAN14A | Additional proxy soliciting materials filed by non-management | |  |
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| 04/16/13 | 04/16/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 04/12/13 | 04/12/13 | DFAN14A | Additional proxy soliciting materials filed by non-management | |  |
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| 04/09/13 | 04/09/13 | DFAN14A | Additional proxy soliciting materials filed by non-management | |  |
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| 04/08/13 | 04/08/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 04/01/13 | 04/01/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 03/29/13 | 03/29/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 03/25/13 | 03/25/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 03/15/13 | 03/15/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 03/12/13 | 03/12/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 03/11/13 | 03/11/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 03/08/13 | 03/08/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 03/07/13 | 03/07/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 03/06/13 | 03/06/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 03/05/13 | 03/05/13 | DFAN14A | Additional proxy soliciting materials filed by non-management | |  |
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| 03/05/13 | 03/05/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 03/04/13 | 03/04/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 02/19/13 | 02/19/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 02/15/13 | 02/15/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 02/14/13 | 02/14/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 02/11/13 | 02/11/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 02/08/13 | 02/08/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 02/07/13 | 02/07/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 02/06/13 | 02/06/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 02/06/13 | 02/06/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 02/05/13 | 02/05/13 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 05/24/12 | 05/24/12 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 05/24/12 | 07/13/12 | DEF 14A | Official notification to shareholders of matters to be brought to a vote ("Proxy") | |  |
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| 05/26/11 | 05/26/11 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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| 05/26/11 | 07/15/11 | DEF 14A | Official notification to shareholders of matters to be brought to a vote ("Proxy") | |  |
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| 12/14/10 | 12/14/10 | DEFA14A | Additional proxy soliciting materials - definitive | |  |
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