Condensed Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Income Statement [Abstract]
Operating revenue	$ 51,404	$ 52,566
Operating expenses:
Cost of services provided	9,612	9,891
Product development	6,693	7,035
Sales and marketing	3,301	3,912
General and administrative	9,841	9,971
Amortization and depreciation	2,552	2,452
Total operating expenses	31,999	33,261
Operating income	19,405	19,305
Interest income	135	93
Interest expense	(247)	(362)
Non-operating income (loss) - put options	454	82
Foreign currency exchange gain (loss)	(119)	(170)
Income before income taxes	19,628	18,948
Income tax expense	(4,211)	(1,604)
Net income	$ 15,417	$ 17,344
Basic earnings per common share	$ 0.40	$ 0.47
Diluted earnings per common share	$ 0.40	$ 0.45
Basic weighted average shares outstanding	38,318	37,168
Diluted weighted average shares outstanding	38,600	38,779