Property and Equipment - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Property and Equipment [Line Items]
Computer software development costs capitalized	$ 12,300	$ 9,700
Interest costs incurred	400	400
Interest costs capitalized	400	400
Retainage amount included in construction in progress	4,200		$ 3,500
Depreciation and amortization	7,716	6,285
Property and Equipment [Member]
Property and Equipment [Line Items]
Depreciation and amortization	$ 14,900	$ 12,200