Stock-based Compensation - Compensation Cost (Detail) - USD ($)	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-based compensation expense	$ 2,088,000	$ 2,220,000
Tax benefit from compensation expense	0	0
Cash received from option exercised	$ 0	$ 2,000

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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Amount of cash inflow from exercise of option under share-based payment arrangement.

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