Leases - Summarizes of Right-of-use Assets and Liabilities for Operating and Finance Leases (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Operating leases:
ROU assets	$ 2,204	$ 4,002
Lease liabilities - operating leases	$ 2,203	$ 4,014
Finance leases:
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property Plant And Equipment Net	Property Plant And Equipment Net
ROU assets	$ 86	$ 79
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Long Term Debt And Finance Lease Obligations Excluding Line Of Credit	Long Term Debt And Finance Lease Obligations Excluding Line Of Credit
Liabilities	$ 31	$ 43