ACQUISITIONS - Pro Forma Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Revenue, net	$ 332,381	$ 143,732	$ 12,032
Net income (loss)	$ (122,657)	(23,841)	(33,242)
Revenue, pro forma adjustments		0	0
Net income (loss) pro forma adjustments		(10,897)	(15,337)
Revenue		165,809	26,942
Net loss		(30,346)	(47,083)
Pro forma adjustment, additional intangible asset amortization expense		2,879	3,971
Pro forma adjustment, additional interest expense for sellers' notes		8,544	11,366
Acquisition-related costs		526
MOCA
Business Acquisition [Line Items]
Revenue, net		8,615	7,864
Net income (loss)		786	1,231
Pro forma adjustment, additional intangible asset amortization expense		537	1,236
GCC
Business Acquisition [Line Items]
Revenue, net		3,046	2,984
Net income (loss)		926	(312)
Pro forma adjustment, additional intangible asset amortization expense		887	1,214
Midway
Business Acquisition [Line Items]
Revenue, net		10,416	4,062
Net income (loss)		2,680	577
Pro forma adjustment, additional intangible asset amortization expense		$ 1,455	$ 1,521