EARNINGS PER SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
EARNINGS PER SHARE
Net income	$ 8,230	$ 10,204	$ 27,188	$ 161,780
Weighted average shares outstanding - basic	35,863,000	42,028,000	37,943,000	41,934,000
EARNINGS PER SHARE
Dilutive effect of Treasury warrants (in shares)				18,000
Weighted average shares outstanding - diluted	36,353,000	42,421,000	38,440,000	42,263,000
Basic earnings per share (in dollars per share)	$ 0.23	$ 0.24	$ 0.72	$ 3.86
Diluted earnings per share (in dollars per share)	$ 0.23	$ 0.24	$ 0.71	$ 3.83
Antidilutive securities excluded from the dilutive share calculation (in shares)	13,864	24,937	13,864	24,937
Employee stock options and awards
EARNINGS PER SHARE
Dilutive effect of share-based compensation arrangements	490,000	393,000	497,000	309,000
Deferred salary restricted stock units
EARNINGS PER SHARE
Dilutive effect of share-based compensation arrangements				2,000

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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