DISCONTINUED OPERATIONS - Major Classes of Assets and Liabilities to be Transferred (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Assets:
Current assets held for sale	$ 6,473	$ 6,949
Long-term assets held for sale	0	7,942
Liabilities:
Current liabilities held for sale	3,974	4,003
Long-term liabilities held for sale	0	368
Support Com | Discontinued Operations, Held-for-sale
Assets:
Accounts receivable	3,996	5,287
Prepaid expenses and other current assets	1,253	1,662
Current assets held for sale	5,249	6,949
Property and equipment	743	1,079
Intangible assets, net	0	3,537	$ 0
Goodwill	0	3,062	$ 0
Other assets	481	264
Long-term assets held for sale	1,224	7,942
Assets held for sale	6,473	14,891
Liabilities:
Accounts payable	191	174
Accrued expenses	3,351	3,692
Income taxes payable	0	137
Current liabilities held for sale	3,542	4,003
Other long-term liabilities	432	368
Long-term liabilities held for sale	432	368
Liabilities held for sale	$ 3,974	$ 4,371