Stock-Based Compensation - Additional Information (Detail) - USD ($)	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 436,000	$ 421,000	$ 913,000	$ 965,000
Income tax benefit from stock-based compensation expense	$ 0	$ 0	$ 0	$ 0
Incentive Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized under Omnibus Incentive Plan	1,100,000		1,100,000
Equity based awards grant date fair value			$ 200

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

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