STOCKHOLDERS' EQUITY (Details) - USD ($) shares in Thousands	12 Months Ended			22 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Mar. 13, 2015	Mar. 12, 2015
Class of Stock [Line Items]
Repurchases of common stock	$ 22,188,000	$ 73,347,000	$ 104,341,000
Common Stock
Class of Stock [Line Items]
Stock repurchase program, authorized amount					$ 300,000,000	$ 150,000,000
Repurchase of common stock (in shares)	453	1,422	1,973	3,800
Repurchases of common stock	$ 4,000	$ 14,000	$ 20,000	$ 199,900,000
Stock repurchase program, remaining authorized repurchase amount	100,100,000			$ 100,100,000
Additional Paid-in Capital
Class of Stock [Line Items]
Repurchases of common stock	$ 22,184,000	$ 73,333,000	$ 104,321,000