Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue:
Total revenue	$ 50,968	$ 35,789	$ 83,833	$ 69,827
Operating expenses:
Sales and marketing	7,435	7,488	15,105	15,126
Product development	4,241	5,110	9,761	10,679
General and administrative	7,173	8,112	15,257	16,652
Amortization of intangible assets	671	895	1,404	1,812
Total operating expenses	53,895	42,596	97,328	86,990
Loss from operations	(2,927)	(6,807)	(13,495)	(17,163)
Interest income	3	66	26	188
Interest (expense)	(100)	(6)	(189)	(10)
Other income, net	3,837	19	3,847	12
Income (loss) before income taxes	813	(6,728)	(9,811)	(16,973)
Income tax expense	(10)	(34)	(62)	(75)
Net income (loss)	$ 803	$ (6,762)	$ (9,873)	$ (17,048)
Net income (loss) per share-basic and diluted
Basic (in dollars per share)	$ 0.03	$ (0.26)	$ (0.37)	$ (0.66)
Diluted (in dollars per share)	$ 0.03	$ (0.26)	$ (0.37)	$ (0.66)
Weighted average number of shares-basic and diluted
Basic (in shares)	26,722	25,907	26,572	25,755
Diluted (in shares)	26,722	25,907	26,572	25,755
Product
Revenue:
Total revenue	$ 35,922	$ 15,869	$ 52,304	$ 33,410
Operating expenses:
Product and service costs (exclusive of amortization of intangible assets shown separately below)	26,550	12,010	38,999	25,828
Service
Revenue:
Total revenue	15,046	19,920	31,529	36,417
Operating expenses:
Product and service costs (exclusive of amortization of intangible assets shown separately below)	$ 7,825	$ 8,981	$ 16,802	$ 16,893