Income Taxes (Tables)

12 Months Ended

Dec. 31, 2022

Income Tax Disclosure [Abstract]

Effective Income Tax Rate Reconciliation

The difference between income taxes expected at the U.S. federal statutory income tax rate of 21% and the reported income tax expense (benefit) are summarized as follows:

	Year Ended December 31,
	2022			2021
Income tax (benefit) at statutory rate	$	(10,685)		$	(11,330)
Valuation allowance	12,894			11,500
State income tax (benefit), net of federal benefit	(2,114)			(1,978)
Business tax credit net of reserves	(575)			(190)
Non-deductible expenses	794			2,210
Business combination	—			(437)
Foreign income taxes at different rate	(310)			(201)
Income tax expense (benefit)	$	4		$	(426)
Effective tax rate	(0.01)		%	0.79		%

Provision Expense (Benefit) for Income Taxes

The provision expense (benefit) for income taxes consist of the following:

	Year Ended December 31,
	2022		2021
Current:
Federal	$	—	$	—
State	4		11
Foreign	—		—
Total current	4		11
Deferred:
Federal	—		(416)
State	—		(21)
Foreign	—		—
Total deferred	—		(437)
Total income tax (benefit) expense	$	4	$	(426)

Components of Net Deferred Income Taxes

The components of net deferred income taxes consist of the following:

	December 31,
	2022		2021
Deferred tax assets:
Net operating loss	$	47,662	$	40,922
Unrealized loss on digital assets	6,754		2,015
Tax credits	1,940		1,416
Reserves and accruals	332		732
Leases - lease liability	1,019		376
Amortization of acquired intangibles	2,624		232
Other deferred tax assets	686		1,748
Gross deferred tax assets	61,017		47,441
Less valuation allowance	(59,057)		(46,163)
Total deferred tax assets	1,960		1,278
Deferred tax liabilities:
Amortization of acquired intangibles	—		—
Leases - right of use asset	(931)		(306)
Other deferred tax liabilities	(1,029)		(972)
Total deferred tax liabilities	(1,960)		(1,278)
Net deferred tax liabilities	$	—	$	—

Reconciliation of Unrecognized Tax Benefits

The following is a tabular reconciliation of the total amounts of unrecognized tax benefits:

	December 31,
	2022		2021
Unrecognized tax benefits, beginning of period	$	1,545	$	1,314
Tax positions taken in prior periods:
Gross increases	—		—
Gross decreases	—		—
Tax positions taken in current period:
Gross increases	212		231
Settlements	—		—
Lapse of statute of limitations	—		—
Unrecognized tax benefits, end of period	$	1,757	$	1,545