Business Segments and Geographic Information - Summary of Revenue from External Customers (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information [Line Items]
Revenues	$ 52,204	$ 62,117	$ 107,267	$ 121,872
United States [Member]
Segment Reporting Information [Line Items]
Revenues	51,265	60,468	105,020	118,815
Canada [Member]
Segment Reporting Information [Line Items]
Revenues	701	1,130	1,532	2,149
India and Other [Member]
Segment Reporting Information [Line Items]
Revenues	$ 238	$ 519	$ 715	$ 908