Significant Items Making up Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Components Of Deferred Tax Assets And Liabilities [Abstract]
Allowances not currently deductible for tax purposes	$ 186	$ 803
Net operating loss carryforwards	27,577	35,252
Operating lease liabilities	0	834
General carryforwards	1,533	16,844
Stock-based compensation	1,334	1,272
Accrued and other	1,992	4,270
Deferred Tax Assets, Gross, Total	32,622	59,275
Less valuation allowance	(32,299)	(56,045)	$ (59,996)
Deferred Tax Assets, Net of Valuation Allowance, Total	323	3,230
Depreciation and amortization	0	(660)
Operating lease right-of-use assets	0	(493)
State income taxes	(323)	(2,077)
Deferred Tax Liabilities, Gross, Total	$ (323)	$ (3,230)