Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenue:
Net revenue	$ 121,782	$ 96,396	$ 230,841	$ 188,013
Operating expenses:
Cost of revenue	67,587	53,712	130,775	106,862
Product development	4,064	2,944	7,694	5,938
Selling, general and administrative	42,502	34,067	83,992	68,195
Total operating expenses	114,153	90,723	222,461	180,995
Income from operations	7,629	5,673	8,380	7,018
Interest income	117	184	241	414
Interest expense	(3,345)	(3,208)	(6,709)	(4,365)
Other income (expense), net	62	(926)	128	(850)
Gain on disposal of subsidiary and sale of other assets		5,500		33,193
Earnings from equity method investment, net	1,279	145	2,498	308
Income before provision for income taxes, net	5,742	7,368	4,538	35,718
Provision for income taxes, net	(1,903)	(1,443)	(733)	(12,832)
Net income	$ 3,839	$ 5,925	$ 3,805	$ 22,886
Basic net income per share	$ 0.09	$ 0.14	$ 0.09	$ 0.54
Diluted net income per share	$ 0.09	$ 0.13	$ 0.09	$ 0.52
Weighted average common stock outstanding (basic)	43,545	42,470	43,360	42,286
Weighted average common stock outstanding (diluted)	44,881	43,957	44,741	43,839