| **NET INCOME PER COMMON SHARE (Tables)**                                                               | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
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| **Earnings Per Share [Abstract]**                                                                      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]                                   | The Company computed its basic and diluted net income per common share as follows: 2011 2010 2009Net income$317,881 $53,805 $161,910Less:     Common stock dividends paid to holders of Series A convertible preferred stock(628) (471) —Allocation of income to Series A convertible preferred stock(18,034) (2,071) —Net income available to common stockholders for basic net income per common share299,219 51,263 161,910Add back:     Common stock dividends paid to holders of Series A convertible preferred stock628 471 —Allocation of income to Series A convertible preferred stock18,034 2,071 —Net income available to common stockholders for diluted net income per common share$317,881 $53,805 $161,910      Weighted average common shares outstanding for basic net income per common share67,158 62,744 51,639Weighted average impact of dilutive securities1,576 1,455 813Weighted average impact of dilutive warrant— 72 54Weighted average impact of assumed convertible preferred stock conversion4,189 3,107 —Total shares for diluted net income per common share72,923 67,378 52,506      Basic net income per common share$4.46 $0.82 $3.14      Diluted net income per common share$4.36 $0.80 $3.08 |
| Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] | Potentially dilutive securities excluded from the calculation of diluted net income per common share were as follows: 2011 2010 2009Weighted average potentially dilutive securities345 287 1,578                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |

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| - Definition
Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257
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| - Definition
Tabular disclosure of an entity's basic and diluted earnings per share calculations.
+ References
No definition available.
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