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Stockholders' Equity (Narrative) (Details) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2015 USD ($) $ / shares shares | Sep. 30, 2015 USD ($) $ / shares shares | Sep. 30, 2014 USD ($) shares | Dec. 31, 2014 USD ($)
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Stock Repurchase Program Authorized Amount1 | $ 70,000 | $ 70,000 |  |
Total number of shares purchased | shares | 803,985 | 803,985 | 707,500 |
Treasury Stock, Value, Acquired, Cost Method |  | $ 8,950 | $ 10,394 |
Stock Repurchase Program Remaining Authorized Repurchase Amount1 | $ 7,700 | $ 7,700 |  |
Stock repurchase program remaining number of shares authorized to be repurchased | shares | 885,550 | 885,550 |  |
SharePrice | $ / shares | $ 8.73 | $ 8.73 |  |
Average Share Price | 11.1 | 11.1 | 14.66 |
Preferred Stock [Member] |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Preferred Stock Issue Costs | $ 10,100 |  |  | $ 10,100
Common Stock [Member] |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Common Stock Issuance Cost | $ 13,600 | $ 13,600 |  | $ 13,600

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