Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue:
Total revenue	$ 32,865	$ 34,038
Operating expenses:
Sales and marketing	7,670	7,638
Product development	5,520	5,569
General and administrative	8,084	8,540
Amortization of intangible assets	733	917
Total operating expenses	43,433	44,394
Loss from operations	(10,568)	(10,356)
Interest income	23	122
Interest expense	(89)	(4)
Other income (expense), net	10	(7)
Loss before income taxes	(10,624)	(10,245)
Income tax expense	(52)	(41)
Net loss	$ (10,676)	$ (10,286)
Net loss per share - basic and diluted (in dollars per share)	$ (0.40)	$ (0.40)
Weighted average number of shares - basic and diluted (in shares)	26,424	25,601
Product
Revenue:
Total revenue	$ 16,382	$ 17,541
Operating expenses:
Product and service costs (exclusive of amortization of intangible assets shown separately below)	12,449	13,818
Service
Revenue:
Total revenue	16,483	16,497
Operating expenses:
Product and service costs (exclusive of amortization of intangible assets shown separately below)	$ 8,977	$ 7,912