Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Amount
Income taxes from continuing operations at statutory rate	$ (7,781)	$ (12,250)
State income taxes	(1,144)	(4,108)
State effect of permanent items	(906)	78
Foreign withholding taxes	1,100
Stock-based compensation	114	96
Deferred rate change	339
Warrants issuance	(6,622)	131
Other	(489)	206
NOL sale	214	301
R&D credit adjustment		2
Increase in valuation allowance	12,087	12,396
Total income tax benefit	$ (3,088)	$ (3,148)
Percent of Pretax Income
Income taxes from continuing operations at statutory rate	21.00%	21.00%
State income taxes	3.10%	7.00%
State effect of permanent items	2.40%	(0.10%)
Foreign withholding taxes	(3.00%)	0.00%
Stock-based compensation	(0.30%)	(0.20%)
Deferred rate change	(0.90%)	0.00%
Warrants issuance	17.90%	(0.20%)
Other	1.30%	0.00%
NOL sale	(0.60%)	(0.50%)
R&D credit adjustment	0.00%	0.00%
Increase in valuation allowance	(32.60%)	(21.30%)
Total income tax benefit	8.30%	5.70%

Effective income tax rate reconciliation issuance of warrants.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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