SHARE-BASED COMPENSATION (Details 2) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended	9 Months Ended
	Feb. 20, 2015	Jan. 28, 2014	Sep. 30, 2015	Sep. 30, 2015	Sep. 30, 2014	Sep. 03, 2015	Dec. 31, 2014
SHARE-BASED COMPENSATION
Additional shares of common stock surrendered under stock repurchase program					1,889
Other current assets			$ 373	$ 373			$ 71
Accrued compensation			19,979	19,979			$ 18,673
Nonvested share awards
SHARE-BASED COMPENSATION
Unrecognized compensation cost related to outstanding, unvested stock options and restricted stock			$ 8,700	$ 8,700
Weighted average recognition period of unrecognized compensation cost				2 years 2 months 12 days
2015 Performance-based RSAs
SHARE-BASED COMPENSATION
Restricted stock granted (in shares)				340,000
Weighted-average grant date fair value (in dollars per share)				$ 18.17
2015 Performance-based RSAs | Minimum
SHARE-BASED COMPENSATION
Vesting period				1 year
2015 Performance-based RSAs | Maximum
SHARE-BASED COMPENSATION
Vesting period				3 years
Service RSAs
SHARE-BASED COMPENSATION
Restricted stock granted (in shares)				150,000
Weighted-average grant date fair value (in dollars per share)				$ 17.01
Number of shares that vested immediately				50,000
Remaining restricted stock (in shares)			100,000	100,000
Service RSAs | Minimum
SHARE-BASED COMPENSATION
Vesting period				1 year
Service RSAs | Maximum
SHARE-BASED COMPENSATION
Vesting period				3 years
Stock options
SHARE-BASED COMPENSATION
Additional shares of common stock surrendered under stock repurchase program				1,889
Granted (in shares)				175,000
Stock option exercises (in shares)				261,548
Intrinsic value of stock options exercised				$ 800
Proceeds from stock options exercised				3,300
Deferred Tax Expense from Stock Options Exercised				$ 300
Weighted Average Exercise Price (in dollars per share)			$ 17.77	$ 17.77
Unrecognized compensation cost related to outstanding, unvested stock options and restricted stock			$ 1,900	$ 1,900
Weighted average recognition period of unrecognized compensation cost				2 years 7 months 6 days
Weighted-average assumptions used and the weighted-average fair value per option granted
Expected life of stock option				7 years
Expected volatility (as a percent)				37.00%
Risk-free interest rate (as a percent)				1.85%
Dividend yield (as a percent)				2.30%
Weighted average grant-date fair value (in dollars per share)				$ 5.57
2004 Plan
SHARE-BASED COMPENSATION
Number of remaining shares available for issuance under current plan			517,494	517,494
2015 Inducement Plan
SHARE-BASED COMPENSATION
Number of remaining shares available for issuance under current plan						200,000
Stock awards issued during period				0
Strategic Executive Incentive Plan | 2014 Performance-based RSAs | Vest one year after and upon certification of achievement of performance criteria by the compensation committee of the Board
SHARE-BASED COMPENSATION
Restricted stock granted (in shares)		225,000
Weighted-average grant date fair value (in dollars per share)		$ 15.02
Executive officer and employee incentive compensation awards
SHARE-BASED COMPENSATION
Total Share-based compensation expense			$ 2,000	$ 6,200
Executive officer and employee incentive compensation awards | Share awards
SHARE-BASED COMPENSATION
Restricted stock granted (in shares)	314,869
Weighted-average grant date fair value (in dollars per share)	$ 18.28