Information Regarding Net Revenue and Gross Profit by Segment (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Net revenue	$ 25,997	$ 25,061
Gross profit	$ 9,211	$ 8,966
Gross profit margin	35.00%	36.00%
Operating expenses:
Research and development	$ 2,707	$ 2,529
Selling and marketing	6,097	5,110
General and administrative	2,948	2,488
Restructuring and severance	191	(140)
Total operating expenses	11,943	9,987
Loss from operations	(2,732)	(1,021)
Non-operating income (expense):
Interest expense, net	(50)	(25)
Gain on investment		24
Foreign currency gains, net	89	19
Loss before income tax benefit (provision)	(2,693)	(1,003)
Identity
Segment Reporting Information [Line Items]
Net revenue	14,678	14,579
Gross profit	$ 3,079	$ 3,159
Gross profit margin	21.00%	22.00%
Premises
Segment Reporting Information [Line Items]
Net revenue	$ 11,319	$ 10,482
Gross profit	$ 6,132	$ 5,807
Gross profit margin	54.00%	55.00%