INCOME TAXES - Components of the Provision for Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current expense (benefit)
U.S. Federal									$ (386)	$ 9,020	$ 23,609
State and local									4,838	2,637	10,170
Total current expense (benefit)									4,452	11,657	33,779
Deferred expense (benefit)
U.S. Federal									1,417	2,247	(4,357)
State and local									451	653	(2,817)
Total deferred expense (benefit)									1,868	2,900	(7,174)
Provision for income tax expense (benefit)	$ 773	$ 8,721	$ (2,301)	$ (873)	$ 10,457	$ (4,181)	$ 5,177	$ 3,104	$ 6,320	$ 14,557	$ 26,605