ASSETS HELD FOR SALE AND DISCONTINUED OPERATIONS - Major Classes of Assets and Liabilities to be Transferred (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Assets:
Current assets held for sale	$ 507			$ 507		$ 6,473
Long-term assets held for sale	19,295			19,295		0
Liabilities:
Current liabilities held for sale	1,732			1,732		3,974
Support Com | Discontinued Operations, Held-for-sale
Assets:
Accounts receivable	472			472		3,996
Prepaid expenses and other current assets	178			178		1,253
Current assets held for sale	650			650		5,249
Property and equipment, net	0			0		743
Other assets	457			457		481
Long-term assets held for sale	457			457		1,224
Loss on classification to held for sale	1,135	$ 0	$ 0	(600)	$ 0
Assets held for sale	507			507		6,473
Liabilities:
Accounts payable	64			64		191
Accrued expenses	803			803		3,351
Current liabilities held for sale	867			867		3,542
Other long-term liabilities	0			0		432
Long-term liabilities held for sale	0			0		432
Liabilities held for sale	$ 867			$ 867		$ 3,974