Summary of Required Compliance Ratios in Connection with Terms of Credit Agreement (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Covenant, Tangible net worth	$ 125,000
Tangible net worth	$ 225,799	$ 225,355
Total leverage	42.40%	43.10%
Secured leverage	7.20%	7.40%
Unencumbered leverage	41.30%	41.90%
Fixed charge coverage	4.80%	4.80%
Maximum
Debt Instrument [Line Items]
Covenant, Total leverage	60.00%
Covenant, Secured leverage	30.00%
Covenant, Unencumbered leverage	60.00%
Minimum
Debt Instrument [Line Items]
Covenant, Fixed charge coverage	1.50%