OTHER ASSETS - Deferred Financing Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Definite-lived assets	$ 8,861	$ 7,140	$ 12,132
Deferred financing expense	3,981	4,866	3,189
Software costs	7,752	6,325	3,447
Total	$ 20,594	$ 18,331	$ 18,768