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Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands | Series B Preferred Stock [Member] Preferred Stock [Member] | Series B Preferred Stock [Member] Retained Earnings [Member] | Series B Preferred Stock [Member] | Common Stock [Member] Stock Issued to Directors [Member] | Common Stock [Member] Stock Issued for 401(k) Match [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] Stock Issued to Directors [Member] | Additional Paid-in Capital [Member] Stock Issued for 401(k) Match [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | AOCI Attributable to Parent [Member] | Treasury Stock [Member] | Stock Issued to Directors [Member] | Stock Issued for 401(k) Match [Member] | Total
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2012 | $ 39 |  |  |  |  | $ 71,499 |  |  | $ 1,218,283 | $ (123,288) | $ (23,918) | $ (4,664) |  |  | $ 1,137,951
Net income (loss) |  |  |  |  |  |  |  |  |  | (25,130) |  |  |  |  | (25,130)
Stock issued to directors |  |  |  | $ 31 |  |  | $ 356 |  |  |  |  |  | $ 387 |  |
Series B Preferred Stock dividends declared |  | $ (552) | $ (552) |  |  |  |  |  |  |  |  |  |  |  | (552)
Common stock issued for assets purchased |  |  |  |  |  | 14,249 |  |  | 204,053 |  |  |  |  |  | 218,302
Warrants exercised |  |  |  |  |  | 6 |  |  | 55 |  |  |  |  |  | 61
Repurchase of common shares |  |  |  |  |  |  |  |  |  |  |  | (286) |  |  | (286)
Other comprehensive loss |  |  |  |  |  |  |  |  |  |  | (2,381) |  |  |  | (2,381)
Common stock dividends declared |  |  |  |  |  | 2 |  |  | 19 | (6,012) |  | (71) |  |  | (6,062)
Restricted stock units granted |  |  |  |  |  |  |  |  | 4,188 |  |  |  |  |  | 4,188
Restricted stock unit distributions |  |  |  |  |  | 109 |  |  | (109) |  |  | (59) |  |  | (59)
Balance at Dec. 31, 2013 | 39 |  |  |  |  | 85,896 |  |  | 1,426,845 | (154,982) | (26,299) | (5,080) |  |  | 1,326,419
Net income (loss) |  |  |  |  |  |  |  |  |  | 17,824 |  |  |  |  | 17,824
Stock issued to directors |  |  |  | 37 |  |  | 438 |  |  |  |  |  | 475 |  |
Series B Preferred Stock dividends declared |  | (552) | (552) |  |  |  |  |  |  |  |  |  |  |  | (552)
Stock issued for 401(k) match |  |  |  |  | $ 203 |  |  | $ 2,226 |  |  |  |  |  | $ 2,429 |
Warrants exercised |  |  |  |  |  | 5,577 |  |  | 48,841 |  |  |  |  |  | 54,418
Repurchase of common shares |  |  |  |  |  |  |  |  |  |  |  | (1,501) |  |  | (1,501)
Other comprehensive loss |  |  |  |  |  |  |  |  |  |  | (5,732) |  |  |  | (5,732)
Common stock dividends declared |  |  |  |  |  | 4 |  |  | 46 | (3,596) |  |  |  |  | (3,546)
Restricted stock units granted |  |  |  |  |  |  |  |  | 9,019 |  |  |  |  |  | 9,019
Restricted stock unit distributions |  |  |  |  |  | 665 |  |  | (665) |  |  | (2,279) |  |  | (2,279)
Balance at Dec. 31, 2014 | 39 |  |  |  |  | 92,382 |  |  | 1,486,750 | (141,306) | (32,031) | (8,860) |  |  | 1,396,974
Net income (loss) |  |  |  |  |  |  |  |  |  | (86,968) |  |  |  |  | (86,968)
Stock issued to directors |  |  |  | $ 59 |  | 218 | $ 547 |  | 2,808 |  |  |  | $ 606 |  | 3,026
Series B Preferred Stock dividends declared |  | $ (552) | $ (552) |  |  |  |  |  |  |  |  |  |  |  | (552)
Stock issued for 401(k) match |  |  |  |  | $ 333 | 441 |  | $ 3,114 | 4,569 |  |  |  |  | $ 3,447 | 5,010
Common stock issued for assets purchased |  |  |  |  |  | 1,562 |  |  | 17,215 |  |  |  |  |  | 18,777
Repurchase of common shares |  |  |  |  |  |  |  |  |  |  |  | (940) |  |  | (940)
Other comprehensive loss |  |  |  |  |  |  |  |  |  |  | (600) |  |  |  | (600)
Common stock dividends declared |  |  |  |  |  |  |  |  |  | (3,739) |  |  |  |  | (3,739)
Restricted stock units granted |  |  |  |  |  |  |  |  | 4,819 |  |  |  |  |  | 4,819
Restricted stock unit distributions |  |  |  |  |  | 224 |  |  | (224) |  |  | (934) |  |  | (934)
Balance at Dec. 31, 2015 | $ 39 |  |  |  |  | $ 95,219 |  |  | $ 1,519,598 | $ (232,565) | $ (32,631) | $ (10,734) |  |  | $ 1,338,926

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