CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue	$ 384,402	$ 254,216	$ 167,350
Costs and expenses:
Cost of revenue (exclusive of depreciation and amortization shown separately below)	13,764	9,370	7,903
Selling and marketing expense	261,100	172,849	112,704
General and administrative expense	37,227	30,030	25,883
Product development	13,761	10,485	7,457
Depreciation	4,944	3,008	3,245
Amortization of intangibles	1,243	149	136
Restructuring and severance	122	422	373
Litigation settlements and contingencies	129	(611)	10,618
Total costs and expenses	332,290	225,702	168,319
Operating income (loss)	52,112	28,514	(969)
Other income (expense), net:
Interest expense, net	(561)	(171)	(2)
Other Income	23	0	0
Income (loss) before income taxes	51,574	28,343	(971)
Income tax (expense) benefit	(20,366)	22,973	484
Net income (loss) from continuing operations	31,208	51,316	(487)
Discontinued operations:
(Loss) income from discontinued operations	(3,714)	(3,269)	9,849
Net income and comprehensive income	27,494	48,047	9,362
Comprehensive income	$ 27,494	$ 48,047	$ 9,362
Weighted average shares outstanding:
Weighted average basic common shares (in shares)	11,812	11,516	11,188
Weighted average diluted common shares (in shares)	12,773	12,541	11,188
Income (loss) per share from continuing operations:
Basic (in dollars per share)	$ 2.64	$ 4.46	$ (0.04)
Diluted (in dollars per share)	2.44	4.09	(0.04)
(Loss) income per share from discontinued operations:
Basic (in dollars per share)	(0.31)	(0.28)	0.88
Diluted (in dollars per share)	(0.29)	(0.26)	0.88
Net income per share:
Basic (in dollars per share)	2.33	4.17	0.84
Diluted (in dollars per share)	$ 2.15	$ 3.83	$ 0.84