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Business Segments and Geographic Information - Summary of Revenue from External Customers (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting Information [Line Items]
Revenues	$ 47,779	$ 63,150	$ 155,046	$ 185,022
United States [Member]
Segment Reporting Information [Line Items]
Revenues	46,778	61,704	151,798	180,519
Canada [Member]
Segment Reporting Information [Line Items]
Revenues	627	1,038	2,159	3,187
India and Other [Member]
Segment Reporting Information [Line Items]
Revenues	$ 374	$ 408	$ 1,089	$ 1,316

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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