STOCK-BASED AWARDS (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended											0 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Stock options	Dec. 31, 2012 Stock options	Dec. 31, 2011 Stock options	Dec. 31, 2013 Stock options First year	Dec. 31, 2013 Stock options Monthly	Dec. 31, 2013 Restricted stock awards	Dec. 31, 2012 Restricted stock awards	Dec. 31, 2011 Restricted stock awards	Jan. 14, 2014 Restricted stock awards Subsequent event	Dec. 31, 2013 Restricted stock awards Subsequent event	Dec. 31, 2013 Restricted stock awards First year	Dec. 31, 2011 Restricted stock awards First year	Dec. 31, 2013 Restricted stock awards First year Subsequent event	Dec. 31, 2013 Restricted stock awards Second year	Dec. 31, 2011 Restricted stock awards Second year	Dec. 31, 2013 Restricted stock awards Third year	Dec. 31, 2011 Restricted stock awards Third year
Stock-Based Awards
Stock options, expiration period				10 years
Vesting period				4 years					3 years		3 years		3 years
Number of shares available for future grants				2,800,000
Options
Outstanding—beginning of year (in shares)				364,000	405,000	496,000
Exercised (in shares)				(89,000)	0	0
Expired/Forfeited (in shares)				(2,000)	(41,000)	(91,000)
Outstanding—end of year (in shares)				273,000	364,000	405,000
Options exercisable at year-end (in shares)				273,000	364,000	404,000
Weighted Average Exercise Price
Outstanding—beginning of year (in dollars per share)				$ 17.34	$ 17.58	$ 18.09
Exercised (in dollars per share)				$ 17.45	$ 0.00	$ 0.00
Expired/Forfeited (in dollars per share)				$ 17.08	$ 20.06	$ 20.55
Outstanding—end of year (in dollars per share)				$ 17.30	$ 17.34	$ 17.58
Options exercisable at year-end (in dollars per share)				$ 17.30	$ 17.34	$ 17.59
Options Outstanding, Weighted Average Remaining Contract Life				3 years 1 month 10 days
Options Outstanding, Aggregate Intrinsic Value				$ 3,695
Options Exercisable, Weighted Average Remaining Contract Life				3 years 1 month 10 days
Options Exercisable, Aggregate Intrinsic Value				3,695
Percentage of award vesting at the end of the year							28.00%	2.00%						40.00%	25.00%	33.30%	30.00%	25.00%	30.00%	50.00%
Stock-based compensation expense	3,251	3,527	3,051	0	3	200			3,251	3,500	2,800
Nonvested options, unrecognized compensation costs				0	0	3
Stock price (in dollars per share)				$ 30.79
Intrinsic value of options exercised				728	0	0
Proceeds from exercise of employee stock options				1,561	0	0
Tax benefit realized from stock-based compensation				$ 0
Units
Outstanding-beginning of year (in shares)									1,003,000	522,000	685,000
Granted at fair value (in shares)									275,000	795,000	268,000	232,000
Vested (in shares)									(339,000)	(240,000)	(318,000)
Forfeited (in shares)									(235,000)	(74,000)	(113,000)
Outstanding-end of period (in shares)									704,000	1,003,000	522,000
Weighted Average Grant Date Fair Value
Outstanding-beginning of year (in dollars per share)									$ 8.81	$ 13.40	$ 12.08
Granted at fair value (in dollars per share)									$ 16.12	$ 6.75	$ 15.47
Vested (in dollars per share)									$ 10.23	$ 12.11	$ 12.20
Forfeited (in dollars per share)									$ 9.38	$ 8.25	$ 13.88
Outstanding-end of period (in dollars per share)									$ 10.79	$ 8.81	$ 13.40