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Equity Transactions (Details) (USD $)
Share data in Millions, except Per Share data, unless otherwise specified |
3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Jun. 30, 2013
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Mar. 31, 2013
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Dec. 31, 2012
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Sep. 30, 2012
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Jun. 30, 2012
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Mar. 31, 2012
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Jun. 30, 2013
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Jun. 30, 2012
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Sep. 30, 2012
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Dec. 31, 2012
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Mar. 30, 2011
Convertible Debt [Member]
Equity [Member]
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Mar. 29, 2011
Convertible Debt [Member]
Equity [Member]
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Mar. 31, 2011
Note Warrant2 [Member]
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Mar. 31, 2011
Note Warrant [Member]
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Jun. 30, 2013
2012 Repurchase Program [Domain]
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Jun. 30, 2013
2012 Repurchase Program [Domain]
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Jun. 30, 2012
2012 Repurchase Program [Domain]
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Dec. 31, 2012
Special Dividend [Domain]
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| Class of Stock [Line Items] | ||||||||||||||||||
| CASH DIVIDEND DECLARED PER COMMON SHARE | $ 0.10 | $ 0.10 | $ 1.60 | $ 0.10 | $ 0.10 | $ 0.10 | $ 0.20 | $ 0.20 | $ 1.90 | $ 1.50 | ||||||||
| Noncontrolling Interest, Increase from Business Combination | $ 5,101,000 | $ 0 | ||||||||||||||||
| Noncontrolling Interest in Variable Interest Entity | 3,835,000 | 0 | 3,835,000 | 0 | ||||||||||||||
| Net Income (Loss) Attributable to Noncontrolling Interest | (632,000) | 0 | (1,266,000) | 0 | ||||||||||||||
| Equity Transactions [Roll Forward] | ||||||||||||||||||
| Balance as of December 31, 2011 | 518,705,000 | 518,705,000 | ||||||||||||||||
| NET INCOME | 9,238,000 | 9,673,000 | (3,031,000) | 20,603,000 | ||||||||||||||
| Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax | 93,000 | 0 | 248,000 | 737,000 | ||||||||||||||
| Dividends | 8,233,000 | |||||||||||||||||
| Adjustments Related to Tax Withholding for Share-based Compensation | 2,411,000 | |||||||||||||||||
| Balance as of September 30, 2012 | 514,393,000 | 518,705,000 | 514,393,000 | 518,705,000 | ||||||||||||||
| Stock Repurchased During Period, Shares | 3.3 | 2.3 | 2.6 | 0.1 | ||||||||||||||
| Stock Repurchase Program, Authorized Amount | 100,000,000 | 200,000,000 | ||||||||||||||||
| Stock Repurchased During Period, Value | (100,000,000) | 75,000,000 | 77,700,000 | (2,700,000) | ||||||||||||||
| Dividends, Common Stock, Cash | 4,118,000 | 4,115,000 | 65,643,000 | 4,095,000 | 4,348,000 | 4,469,000 | 8,233,000 | 8,817,000 | 12,912,000 | 78,555,000 | ||||||||
| Class of Warrant or Right, Outstanding | 0.5 | 3.5 | ||||||||||||||||
| Warrant Option Strike Price | $ 64.09 | |||||||||||||||||
| Proceeds from Issuance of Warrants | 4,100,000 | 27,600,000 | ||||||||||||||||
| Payments for Repurchase of Common Stock | 0 | 77,745,000 | ||||||||||||||||
| Proceeds from Stock Options Exercised | 641,000 | 590,000 | ||||||||||||||||
| Excess Tax Benefit (Tax Deficiency) from Share-based Compensation, Financing Activities | 683,000 | 1,590,000 | ||||||||||||||||
| Share-based Compensation | 7,791,000 | 3,135,000 | ||||||||||||||||
| Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | $ 518,228,000 | $ 518,705,000 | $ 518,228,000 | $ 518,705,000 | ||||||||||||||