SEGMENT INFORMATION - Summary of Reconciliation to Consolidated Total Assets of Company (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	$ 341,267	$ 64,567
Cash and cash equivalents	82,599	5,052	$ 11,750
Short term investments	496	$ 0
Operating Segments [Member]
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	258,172
Cryptocurrency Datacenter and Power Generation [Member] | Operating Segments [Member]
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	228,222
Support Services [Member] | Operating Segments [Member]
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	$ 29,950