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Business Segments and Geographic Information - Summary of Revenue from External Customers (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Revenues	$ 201,098	$ 242,238	$ 222,012
Equipment, Enterprise Software and Leasehold Improvements, net	1,913	2,665	3,038
United States [Member]
Segment Reporting Information [Line Items]
Revenues	197,246	236,187	214,379
Equipment, Enterprise Software and Leasehold Improvements, net	791	1,353	2,221
Canada [Member]
Segment Reporting Information [Line Items]
Revenues	2,474	4,215	4,543
Equipment, Enterprise Software and Leasehold Improvements, net	332	429	2
India and Other [Member]
Segment Reporting Information [Line Items]
Revenues	1,378	1,836	3,090
Equipment, Enterprise Software and Leasehold Improvements, net	$ 790	$ 883	$ 815

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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