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INCOME TAXES - Reconciliation of Differences from U.S. Federal Statutory Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Pretax book income	$ 96,004	$ 122,538	$ 185,417
Federal tax expense at applicable statutory rate	20,161	42,888	64,896
State and local income taxes (net of federal benefit)	4,737	5,047	7,145
Benefit of domestic production deduction	0	(3,450)	(5,065)
Change in income tax reserves	0	(11,925)	862
Remeasurement of deferred taxes	(421)	(19,796)	0
Nondeductible officer compensation	1,152	0	163
Stock based compensation expense	(1,009)	(1,943)	(225)
Other	1,963	295	(1,792)
Income tax expense	$ 26,583	$ 11,116	$ 65,984

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Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to excess tax benefit for share-based compensation cost.

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