STOCKHOLDERS' EQUITY - Summary of Reclassifications Out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 5,164			$ 5,406			$ 15,928	$ 16,869
Income before income taxes	22,462			15,491			46,431	29,029
Provision for income taxes	6,601			374			14,476	840
Net income	15,861	$ 11,783	$ 4,311	15,117	$ 12,113	$ 959	31,955	28,189
Accumulated Gain (Loss), Cash Flow Hedge | Amounts Reclassified Out of Accumulated Other Comprehensive Loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	(1,204)			(1,156)			(3,551)	(2,513)
Provision for income taxes	(496)			0			(765)	112
Net income	(708)			(1,156)			(2,786)	(2,625)
Interest rate swaps | Accumulated Gain (Loss), Cash Flow Hedge | Amounts Reclassified Out of Accumulated Other Comprehensive Loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 1,204			$ 1,156			$ 3,551	$ 2,513