NOTES PAYABLE - Summary of Notes Payable (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2021	Dec. 31, 2020
Less: Current portion	$ (11,499)	$ (3,273)
Total	7,064	1,364
Equipment Finance Agreement [Member]
Notes Payable	18,563	4,637
Less: Current portion	(11,499)	(3,273)
Total	7,064	1,364
Miner Equipment Note A [Member] \| Equipment Finance Agreement [Member]
Notes Payable	$ 2,739	$ 4,233
Loan Date	December 2020
Maturity Date	June 2022	July 2022
Interest Rate	17.00%	17.00%
Initial Financing	$ 4,482	$ 4,482
Miner Equipment Note B [Member] \| Equipment Finance Agreement [Member]
Notes Payable	$ 261	$ 404
Loan Date	December 2020
Maturity Date	June 2022	June 2022
Interest Rate	17.00%	17.00%
Initial Financing	$ 428	$ 428
Miner Equipment Note C [Member] \| Equipment Finance Agreement [Member]
Notes Payable	$ 2,105
Loan Date	March 2021
Maturity Date	November 2022
Interest Rate	17.00%
Initial Financing	$ 2,229
Miner Equipment Note D [Member] \| Equipment Finance Agreement [Member]
Notes Payable	$ 4,012
Loan Date	April 2021
Maturity Date	December 2022
Interest Rate	17.00%
Initial Financing	$ 4,012
Miner Equipment Note E And H [Member] \| Equipment Finance Agreement [Member]
Notes Payable	$ 9,446
Loan Date	May 2021
Maturity Date	October 2023
Interest Rate	15.00%
Initial Financing	$ 9,446

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Carrying value as of the balance sheet date of notes payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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