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RELATED-PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Related Party Transaction [Line Items]
Accounts receivable from related parties	$ 342		$ 300
Affiliated Entity \| Directors and Executives
Related Party Transaction [Line Items]
Accounts receivable from related parties	300		$ 300
Affiliated Entity \| Directors and Executives \| Hosting Service
Related Party Transaction [Line Items]
Revenue from related parties	5,900	$ 4,300
Affiliated Entity \| Directors and Executives \| Equipment Sales
Related Party Transaction [Line Items]
Revenue from related parties	25,900	7,900
Affiliated Entity \| Chief Executive Officer
Related Party Transaction [Line Items]
Related party transactions, reimbursement	500	$ 0
Payable to related party	$ 300