STOCK-BASED COMPENSATION - Options Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Other Disclosures
Intrinsic value of options exercised	$ 100	$ 2,400	$ 3,600
Options exercisable (in shares)	7,947	13,320	221,855
Weighted average exercise price of options exercisable (in dollars per share)	$ 5.09	$ 9.53	$ 11.72
Average remaining contractual term of options exercisable	4 months 24 days	1 year	1 year
Aggregate intrinsic value of exercisable options	$ 100	$ 100	$ 2,600
Cash received related to exercise of options	$ 100	$ 2,400	$ 3,600
Employee Awards
Shares
Outstanding at the beginning of the year (in shares)		203,000	434,500
Terminated (in shares)		(3,000)	(1,500)
Exercised (in shares)		(200,000)	(230,000)
Outstanding at the end of the year (in shares)			203,000
Weighted Average Exercise Price
Outstanding at the beginning of the year (in dollars per share)		$ 11.88	$ 13.45
Terminated (in dollars per share)		12.10	15.60
Exercised (in dollars per share)		$ 11.88	14.82
Outstanding at the end of the year (in dollars per share)			$ 11.88
Director Awards
Shares
Outstanding at the beginning of the year (in shares)	13,320	18,855	28,259
Exercised (in shares)	(5,373)	(5,535)	(9,404)
Outstanding at the end of the year (in shares)	7,947	13,320	18,855
Weighted Average Exercise Price
Outstanding at the beginning of the year (in dollars per share)	$ 9.53	$ 10.02	$ 11.99
Exercised (in dollars per share)	16.10	11.21	16.04
Outstanding at the end of the year (in dollars per share)	$ 5.09	$ 9.53	$ 10.02
Other Disclosures
Aggregate intrinsic value at end of year	$ 40,450
Weighted average remaining contractual term (years)	4 months 24 days
Incentive stock options
Other Disclosures
Unrecognized stock-based compensation expense related to non-vested stock	$ 0	$ 0	$ 0