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Consolidated Statements of Changes in Shareholders' Equity (USD $) In Thousands | Series B Preferred Stock [Member] Accumulated Deficit [Member] | Series B Preferred Stock [Member] | Mandatory Convertible Preferred Stock [Member] Accumulated Deficit [Member] | Mandatory Convertible Preferred Stock [Member] | Stock Issued To Directors [Member] Common Stock [Member] | Stock Issued To Directors [Member] Additional Paid-in Capital [Member] | Stock Issued To Directors [Member] | Bonuses Paid Through Stock Issuances [Member] Common Stock [Member] | Bonuses Paid Through Stock Issuances [Member] Additional Paid-in Capital [Member] | Bonuses Paid Through Stock Issuances [Member] | Series B Preferred Stock [Member] | Series C Mandatory Convertible Preferred Stock [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | Accumulated Deficit [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Treasury Stock [Member] | Total
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Balances at Dec. 31, 2009 |  |  |  |  |  |  |  |  |  |  | $ 39 | $ 504 | $ 59,604 | $ 1,121,076 | $ (300,915) | $ (14,183) | $ (640) | $ 865,485
Net income |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 48,983 |  |  | 48,983
Options granted |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,121 |  |  |  | 1,121
Options exercised |  |  |  |  |  |  |  |  |  |  |  |  | 174 | 3,743 |  |  | (718) | 3,199
Share based compensation |  |  |  |  | 20 | 410 | 430 | 262 | (262) |  |  |  |  |  |  |  |  |
Warrants exercised |  |  |  |  |  |  |  |  |  |  |  |  | 3,553 | 46,341 |  |  |  | 49,894
Mandatory Convertible Preferred Stock dividends paid in common stock |  |  |  |  |  |  |  |  |  |  |  |  | 971 | 5,547 |  |  |  | 6,518
Other comprehensive income (loss) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (934) |  | (934)
Preferred stock dividends declared | (552) | (552) | (13,093) | (13,093) |  |  |  |  |  |  |  |  |  |  |  |  |  | 13,633
Restricted stock units granted |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,895 |  |  |  | 1,895
Restricted stock unit distributions |  |  |  |  |  |  |  |  |  |  |  |  | 120 | (120) |  |  | (693) | (693)
Balances at Dec. 31, 2010 |  |  |  |  |  |  |  |  |  |  | 39 | 504 | 64,704 | 1,179,751 | (265,577) | (15,117) | (2,051) | 962,253
Net income |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 151,164 |  |  | 151,164
Options exercised |  |  |  |  |  |  |  |  |  |  |  |  | 19 | 460 |  |  |  | 479
Share based compensation |  |  |  |  | 11 | 331 | 342 | 2 | 58 | 60 |  |  |  |  |  |  |  |
Warrants exercised |  |  |  |  |  |  |  |  |  |  |  |  | 536 | 4,771 |  |  |  | 5,307
Common stock issued for assets purchased (5,396,000 shares) |  |  |  |  |  |  |  |  |  |  |  |  | 1,349 | 32,482 |  |  |  | 33,831
Mandatory Convertible Preferred Stock dividends paid in common stock |  |  |  |  |  |  |  |  |  |  |  | 504 | 4,719 | (4,215) |  |  |  |
Other comprehensive income (loss) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (8,381) |  | (8,381)
Preferred stock dividends declared | (552) | (552) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 552
Common stock dividends declared |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (5,592) |  |  | (5,592)
Restricted stock units granted |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,671 |  |  |  | 1,671
Restricted stock unit distributions |  |  |  |  |  |  |  |  |  |  |  |  | 80 | (80) |  |  | (469) | (469)
Balances at Dec. 31, 2011 |  |  |  |  |  |  |  |  |  |  | 39 |  | 71,420 | 1,215,229 | (120,557) | (23,498) | (2,520) | 1,140,113
Net income |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 14,954 |  |  | 14,954
Share based compensation |  |  |  |  |  |  |  |  |  |  |  |  | 19 | 336 |  |  |  | 355
Other comprehensive income (loss) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (420) |  | (420)
Preferred stock dividends declared | (552) | (552) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 552
Common stock dividends declared |  |  |  |  |  |  |  |  |  |  |  |  | 1 | 11 | (17,133) |  |  | (17,121)
Restricted stock units granted |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,746 |  |  |  | 2,746
Restricted stock unit distributions |  |  |  |  |  |  |  |  |  |  |  |  | 59 | (39) |  |  | (203) | (183)
Repurchase of common shares (350,000 shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1,941) | (1,941)
Balances at Dec. 31, 2012 |  |  |  |  |  |  |  |  |  |  | $ 39 |  | $ 71,499 | $ 1,218,283 | $ (123,288) | $ (23,918) | $ (4,664) | $ 1,137,951

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