Leases - Schedule of Classification of ROU Assets and Lease liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
ASSETS
Operating right-of-use assets	$ 2,092	$ 2,289
Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List	Other noncurrent assets	Other noncurrent assets
Finance right-of-use assets	$ 99	$ 148
Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List	Other noncurrent assets	Other noncurrent assets
Total leased assets	$ 2,191	$ 2,437
Current
Operating lease liabilities	$ 509	$ 475
Operating Lease Liability Current Statement Of Financial Position Extensible List	Accrued liabilities	Accrued liabilities
Finance lease liabilities	$ 44	$ 62
Finance Lease Liability Current Statement Of Financial Position Extensible List	Accrued liabilities	Accrued liabilities
Noncurrent
Operating leases	$ 3,252	$ 3,600
Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List	Long-term liabilities	Long-term liabilities
Finance leases	$ 60	$ 92
Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List	Long-term liabilities	Long-term liabilities
Total lease liabilities	$ 3,865	$ 4,229