Leases - Components of Operating Lease Cost and Other Related Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Leases [Abstract]
Operating lease cost	$ 54
Total operating lease cost	54
Cash paid for amounts included in the measurement of lease liabilities - operating cash flows from operating leases	$ 54
Weighted average lease term - years	4 years 4 months 13 days
Weighted average discount rate	3.29%