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STOCKHOLDERS' EQUITY - Summary of Changes in Balances of Each Component of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 130,745	$ 117,996	$ 122,753	$ 96,197	$ 83,034	$ (15,832)	$ 122,753	$ (15,832)
Income tax benefit related to items of other comprehensive loss	0			0			112	0
Other comprehensive income (loss), net of tax	160	(1,569)	(7,189)	(747)	(2,959)	(1,557)	(8,598)	(5,263)
Ending balance	147,987	$ 130,745	117,996	$ 110,812	$ 96,197	$ 83,034	147,987	$ 110,812
Interest Rate Swaps
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance			$ (6,041)				(6,041)
Other comprehensive loss							(11,223)
Amounts reclassified from accumulated other comprehensive loss							2,513
Income tax benefit related to items of other comprehensive loss							112
Other comprehensive income (loss), net of tax							(8,598)
Ending balance	$ (14,639)						$ (14,639)