Consolidated Statements Of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Revenues:
Subscription	$ 62,213	$ 49,867	$ 117,549	$ 96,070
Other	24,071	19,148	46,537	32,923
Total revenues	86,284	69,015	164,086	128,993
Cost of revenues	33,121	26,867	65,390	50,212
Gross profit	53,163	42,148	98,696	78,781
Operating expenses:
Sales and marketing	20,207	15,688	37,740	29,963
General and administrative	14,533	13,219	28,600	25,967
Research and development	7,546	4,819	13,978	9,264
Depreciation and amortization	10,993	8,006	21,516	15,924
Total operating expenses	53,279	41,732	101,834	81,118
(Loss) income from operations	(116)	416	(3,138)	(2,337)
Interest expense, net	(321)	(344)	(605)	(784)
Gain (loss) on change in fair market value of investments, net	41	(264)	41	(264)
Loss before income taxes	(396)	(192)	(3,702)	(3,385)
Income tax expense	(1,328)	(596)	(660)	(570)
Net loss	(1,724)	(788)	(4,362)	(3,955)
(Income) loss allocated to noncontrolling interest		(149)	184	(149)
Accretion associated with noncontrolling interest		(652)		(652)
Net loss allocable to common shareholders'	$ (1,724)	$ (1,589)	$ (4,178)	$ (4,756)
Basic and diluted net loss per share	$ (0.06)	$ (0.06)	$ (0.15)	$ (0.20)
Weighted average common shares - basic & diluted	27,330,887	24,876,801	27,255,857	23,964,869