Land, Buildings And Equipment - Schedule of Land, Building and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 12,420	$ 12,384
Less accumulated depreciation	(7,854)	(7,306)
Property, Plant and Equipment, Net	4,566	5,078
Land [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Gross	995	995
Buildings [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Gross	3,167	3,167
Building and Leasehold Improvements [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Gross	3,820	3,820
Furniture, Fixtures and Equipment [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 4,438	$ 4,402

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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