CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues	$ 52,616	$ 48,038	$ 155,064	$ 142,625
Operating expenses:
Cost of revenues	6,099	3,603	16,853	10,555
Product development	5,597	3,874	16,253	10,250
Sales and marketing	16,601	16,194	50,106	48,801
General and administrative	8,534	6,736	25,040	19,753
Depreciation	2,011	1,505	5,377	4,031
Amortization of intangible assets	2,208	1,419	5,617	4,954
Change in acquisition related contingencies	50	0	146	0
Total operating expenses	41,100	33,331	119,392	98,344
Operating income	11,516	14,707	35,672	44,281
Interest expense	(378)	(327)	(1,097)	(1,696)
Interest income	5	16	29	72
Other income	0	0	232	0
Income before income taxes	11,143	14,396	34,836	42,657
Income tax expense	4,085	3,395	12,730	13,583
Net income	$ 7,058	$ 11,001	$ 22,106	$ 29,074
Basic earnings per share	$ 0.12	$ 0.18	$ 0.39	$ 0.47
Diluted earnings per share	$ 0.12	$ 0.17	$ 0.37	$ 0.44
Weighted average basic shares outstanding	56,606	59,907	57,324	62,214
Weighted average diluted shares outstanding	59,505	63,143	60,497	65,636