STOCK-BASED COMPENSATION (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Aggregate Intrinsic Value
Share price	$ 32.84
Weighted average assumptions
Fair Value of Options Vested	$ 3,200,000	$ 300,000
Stock options
Unrecognized compensation cost
Unrecognized compensation cost	200,000
Weighted-average period for recognition of unrecognized compensation cost	1 year
Number of Options
Outstanding at the beginning of the period (in shares)	1,072,503
Granted (in shares)	0
Exercised (in shares)	(31,642)
Forfeited (in shares)	0
Expired (in shares)	(1,862)
Outstanding at the end of the period (in shares)	1,038,999	1,072,503
Options exercisable at the end of the period (in shares)	887,707
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 8.97
Granted (in dollars per share)	$ 0.00
Exercised (in dollars per share)	$ 8.38
Forfeited (in dollars per share)	$ 0
Expired (in dollars per share)	$ 11.53
Outstanding at the end of the period (in dollars per share)	$ 8.98	$ 8.97
Options exercisable at the end of the period (in dollars per share)	$ 9.34
Weighted Average Remaining Contractual Term
Outstanding at the end of the period	4 years 9 months 7 days
Options exercisable at the end of the period	4 years 2 months 27 days
Aggregate Intrinsic Value
Outstanding at the end of the period	24,788,000
Options exercisable at the end of the period	20,865,000
Intrinsic value of stock options exercised	400,000	300,000
Cash received from stock option exercised	300,000	700,000
Actual tax benefit realized	200,000	100,000
Weighted average assumptions
Expected term		7 years
Dividend yield (as a percent)		0.00%
Volatility factor (as a percent)		45.00%
Risk-free interest rate (as a percent)		2.00%
Expected dividend payment		0
Stock options | Chairman and CEO
Aggregate Intrinsic Value
Weighted average fair value (in dollars per share)		$ 3.63
Vesting period		3 years
RSUs
Unrecognized compensation cost
Unrecognized compensation cost	5,600,000
Weighted-average period for recognition of unrecognized compensation cost	1 year 10 months 27 days
Restricted stock
Unrecognized compensation cost
Unrecognized compensation cost	2,300,000
Weighted-average period for recognition of unrecognized compensation cost	2 years 7 months 6 days
Restricted Stock Market Condition
Unrecognized compensation cost
Unrecognized compensation cost	$ 100,000
Weighted-average period for recognition of unrecognized compensation cost	1 month 6 days