Information Regarding Net Revenue and Gross Profit by Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Net revenue	$ 83,755	$ 78,142
Gross profit	$ 36,654	$ 33,332
Gross profit margin	44.00%	43.00%
Operating expenses:
Research and development	$ 8,616	$ 7,235
Selling and marketing	18,138	16,391
General and administrative	9,445	10,824
Increase in fair value of earnout liability	550
Restructuring and severance	14	747
Total operating expenses	36,763	35,197
Loss from operations	(109)	(1,865)
Non-operating income (expense):
Interest expense, net	(917)	(1,518)
Loss on extinguishment of debt, net		(1,369)
Gain on sale of investment	142
Foreign currency gains, net	59	204
Loss before income taxes and noncontrolling interest	(825)	(4,548)
Premises
Segment Reporting Information [Line Items]
Net revenue	41,579	34,587
Gross profit	$ 22,084	$ 19,373
Gross profit margin	53.00%	56.00%
Identity
Segment Reporting Information [Line Items]
Net revenue	$ 42,176	$ 43,555
Gross profit	$ 14,570	$ 13,959
Gross profit margin	35.00%	32.00%