INCOME TAXES - Schedule of Provision (benefit) for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Provision for income taxes - continuing operations	$ 57,694	$ 97,432	$ 41,249
Income from discontinued operations, income tax benefit	0	0	(10,806)
Income tax expense (benefit)	57,694	97,432	30,443
Current:
Federal	80,420	92,609	16,229
State	5,720	5,641	(8,305)
Current income tax expense (benefit)	86,140	98,250	7,924
Deferred:
Federal	(26,637)	3,170	20,214
State	(1,809)	(3,988)	2,305
Deferred income tax expense (benefit)	(28,446)	(818)	22,519
Income tax expense (benefit)	$ 57,694	$ 97,432	$ 30,443