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Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015 | Dec. 31, 2015
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Stock Repurchase Program Authorized Amount1 |  | $ 70,000 |  |
Total number of shares purchased | 303,985 |  | 303,985 |
Treasury Stock Acquired, Average Cost Per Share | $ 13.9 |  |  |
Treasury Stock, Value, Acquired, Cost Method | $ 4,200 | 0 | $ 4,238 |
Stock Repurchase Program Remaining Authorized Repurchase Amount1 |  | $ 7,700 |  |
Stock repurchase program remaining number of shares authorized to be repurchased |  | 931,428 |  |
SharePrice |  | $ 8.3 |  |
Preferred Stock Issue Costs |  |  |  | $ 13,600
Common Stock Issuance Cost |  | $ 10,100 |  |
legal surplus |  | 73,300 |  | 70,400
Preferred Stock [Member] |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Preferred Stock Issue Costs |  | $ 13,600 |  |
Common Stock [Member] |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Common Stock Issuance Cost |  |  |  | $ 10,100

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