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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND NATURE OF BUSINESS (Details 4) (USD $)
In Thousands, except Per Share data, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
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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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Dec. 31, 2011
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Sep. 30, 2011
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Jun. 30, 2011
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Mar. 31, 2011
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| Diluted earnings per share | |||||||||||
| Net income attributable to common stockholders | $ 120,561 | $ 57,757 | $ 42,678 | ||||||||
| Weighted average common shares - Basic | 34,502 | 34,086 | 33,825 | ||||||||
| Weighted average common shares - Diluted | 34,774 | 34,122 | 33,825 | ||||||||
| Total diluted earnings per share (in dollars per share) | $ 0.92 | $ 1.12 | $ 0.39 | $ 1.01 | $ (0.10) | $ 0.99 | $ 0.42 | $ 0.35 | $ 3.45 | $ 1.66 | $ 1.22 |
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Common Stock
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| Diluted earnings per share | |||||||||||
| Net income attributable to common stockholders | 119,840 | 56,541 | 41,384 | ||||||||
| Weighted average common shares - Basic | 34,502 | 34,086 | 33,825 | ||||||||
| Weighted average common shares - Diluted | 34,774 | 34,122 | 33,825 | ||||||||
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Restricted stock units participating securities
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| Diluted earnings per share | |||||||||||
| Net income attributable to common stockholders | $ 721 | $ 1,216 | $ 1,294 | ||||||||
| Plus: Dilutive effect of stock options and awards (in shares) | 272 | 36 | |||||||||