Consolidated Statements of Operations (unaudited) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Statement [Abstract]
Revenue	$ 59,116,000	$ 54,753,000	$ 171,879,000	$ 159,303,000
Cost of revenue	15,919,000	15,209,000	47,709,000	46,935,000
Gross profit	43,197,000	39,544,000	124,170,000	112,368,000
Operating Expenses:
Product development	4,878,000	5,359,000	14,236,000	15,073,000
Sales and marketing	27,122,000	23,526,000	79,310,000	70,659,000
General and administrative	13,844,000	12,453,000	41,701,000	38,812,000
Impairment of capitalized software	0	0	0	8,377,000
Total operating expenses	45,844,000	41,338,000	135,247,000	132,921,000
Loss from operations	(2,647,000)	(1,794,000)	(11,077,000)	(20,553,000)
Interest Expense	1,242,000	1,171,000	3,516,000	5,245,000
Amortization of debt issuance cost	71,000	177,000	287,000	591,000
Other (income) expense, net	(662,000)	(689,000)	306,000	(1,478,000)
Net loss before income tax	(3,298,000)	(2,453,000)	(15,186,000)	(24,911,000)
Income tax benefit	(782,000)	(1,194,000)	(3,757,000)	(9,039,000)
Net loss	$ (2,516,000)	$ (1,259,000)	$ (11,429,000)	$ (15,872,000)
Net loss per common share
Basic (in dollars per share)	$ (0.05)	$ (0.02)	$ (0.21)	$ (0.29)
Diluted (in dollars per share)	$ (0.05)	$ (0.02)	$ (0.21)	$ (0.29)
Weighted average number of shares used in calculating net loss per share
Basic (in shares)	55,191,868	54,391,089	55,042,305	54,291,683
Diluted (in shares)	55,191,868	54,391,089	55,042,305	54,291,683