Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Revenues	$ 30,440	$ 33,728	$ 99,290	$ 109,665
Cost of revenues	3,361	4,742	10,982	14,496
Gross profit	27,079	28,986	88,308	95,169
Operating expenses:
Sales and marketing	17,184	19,089	55,278	61,881
Product development	2,317	2,917	7,281	9,212
General and administrative	5,373	6,120	16,620	17,906
Total operating expenses	24,874	28,126	79,179	88,999
Income from operations	2,205	860	9,129	6,170
Other income (loss), net	251	(202)	293	(866)
Income before income taxes	2,456	658	9,422	5,304
Income taxes	837	(8,199)	3,734	(5,125)
Net income	$ 1,619	$ 8,857	$ 5,688	$ 10,429
Basic net income per share (in dollars per share)	$ 0.12	$ 0.60	$ 0.40	$ 0.71
Diluted net income per share (in dollars per share)	$ 0.12	$ 0.60	$ 0.40	$ 0.71
Shares used in computing basic net income per share (in shares)	13,839	14,730	14,109	14,730
Shares used in computing diluted net income per share (in shares)	13,867	14,730	14,119	14,730