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Share-Based Compensation - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jul. 29, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-qualified stock option awards vesting period	3 years	3 years
Non-qualified stock option awards expiration term	10 years	10 years
Compensation expense related to share-based awards	$ 2,356,000	$ 1,009,000	$ 1,518,000
Tax benefit related to stock option awards	$ 0	$ 0
Stock options cancelled	375,000
Share-based compensation expense	$ 500,000
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to non-vested share-based compensation arrangements	$ 3,300,000
Weighted average period to recognize unrecognized share-based compensation cost	2 years 7 months 6 days
Weighted average grant date fair value of options granted	$ 1.23	$ 1.91	$ 2.28
Increase Time Period To Exercise Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase of common stock	1,190,263
Accelerate Vesting At Termination Date [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase of common stock	616,667
Class A Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock par value	$ 0.01	$ 0.01		$ 0.01
Class A Common Stock [Member] \| Steve Holcombe [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase of common stock	2,498,635
Common stock par value	$ 1.47
2015 Omnibus Equity Incentive Plan [Member] \| Class A Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares to be awarded	7,000,000.0