STOCKHOLDERS' EQUITY (Details) (USD $) Share data in Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Feb. 25, 2014
Class of Stock [Line Items]
Stock repurchase program, authorized amount		$ 150,000,000
Repurchases of common stock	(104,341,000)
Stock repurchase program, remaining authorized repurchase amount	45,700,000
Common Stock
Class of Stock [Line Items]
Repurchased of common stock (in shares)	(1,973)
Repurchases of common stock	(20,000)
Additional Paid-in Capital
Class of Stock [Line Items]
Repurchases of common stock	$ (104,321,000)