Condensed Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Operating revenue	$ 53,804	$ 42,602	$ 145,347	$ 124,919
Operating expenses:
Cost of services provided	9,500	8,710	27,686	24,931
Product development	7,102	4,964	17,188	14,385
Sales and marketing	4,346	3,440	12,454	9,553
General and administrative	9,679	5,785	24,700	18,240
Amortization and depreciation	2,469	1,749	6,571	5,617
Total operating expenses	33,096	24,648	88,599	72,726
Operating income	20,708	17,954	56,748	52,193
Interest income	88	100	365	429
Interest expense	(440)	(218)	(1,005)	(592)
Other non-operating income (loss)	414	33	676	(785)
Foreign currency exchange gain (loss)	(536)	(230)	1,759	2,635
Income before income taxes	20,234	17,639	58,543	53,880
Income tax benefit (expense)	(2,162)	(1,103)	(6,719)	168
Net income	$ 18,072	$ 16,536	$ 51,824	$ 54,048
Basic earnings per common share	$ 0.49	$ 0.44	$ 1.41	$ 1.41
Diluted earnings per common share	$ 0.46	$ 0.41	$ 1.32	$ 1.31
Basic weighted average shares outstanding	37,214	37,345	36,859	38,215
Diluted weighted average shares outstanding	39,120	40,449	39,158	41,400