STOCK-BASED COMPENSATION (Narrative) (Details) - USD ($)		12 Months Ended
	Jun. 18, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense (less than for stock options in 2014 and 2013)		$ 5,824,000	$ 3,655,000	$ 5,429,000
Excess tax benefit recognized		$ 5,000,000	$ 0	$ 0
Granted (in shares)		0	0	0
Stock options exercised			$ 0	$ 224,000
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value (in dollars per share)		$ 21.47	$ 14.18	$ 5.51
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value (in dollars per share)		$ 24.94	$ 26.42	$ 16.32
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense (less than for stock options in 2014 and 2013)		$ 600,000	$ 600,000	$ 2,700,000
Unrecognized compensation cost		$ 5,000,000
Period over which unrecognized stock compensation expense will be realized		1 year
Weighted-average grant date fair value (in dollars per share)		$ 50.11	$ 25.57	$ 16.89
Fair value of restricted stock units vested		$ 600,000	$ 600,000	$ 1,400,000
Participants who receives restricted stock units receives an equal amount of incentive restricted stock units, right to receive shares of common stock shares of common stock		0.35020
Conversion of previously vested shares (in shares)	69,000
Performance Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense (less than for stock options in 2014 and 2013)			$ 1,200,000
Restricted Stock Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value (in dollars per share)		$ 30.50	$ 21.11	$ 11.55
Percentage of plan that vest in relation to time		60.00%
Percentage of plan that vests based on performance		40.00%
Restricted Stock Award [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		2 years
Restricted Stock Award [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense (less than for stock options in 2014 and 2013)		$ 5,200,000	$ 3,100,000	$ 2,700,000
Fair value of restricted stock units vested		5,900,000	1,500,000	3,000,000
Accelerated share-based compensation expense		200,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense (less than for stock options in 2014 and 2013)		0	100,000	100,000
Stock options exercised		500,000	200,000	100,000
Options outstanding and exercisable, intrinsic value		$ 1,100,000	$ 500,000	$ 500,000
Management Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock remaining for future issuance		900,000