Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred income tax assets
Net operating loss carry forwards	$ 42,127	$ 41,650
Credit carry forwards	3,027	3,159
Fixed assets	116	373
Intangibles	3,346	4,679
Equity-based compensation	343	308
Nondeductible accruals	365	319
Various reserves	23	209
Other	2	2
Valuation allowance	(49,405)	(50,397)
Total deferred income taxes - net	(56)	302
Deferred income tax liabilities
Foreign intangibles	(1)	(27)
Deferred rent	94
Unrealized translation gain/loss	3	(120)
Prepaid expenses	(99)	(61)
Total deferred income liabilities	(3)	(208)
Net deferred income tax assets	$ (59)
Net deferred income tax assets (liabilities)		$ 94