Business Segments (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) segment	Sep. 30, 2014 USD ($)
Business Segments
Number of Operating Segments | segment			1
Total Revenue	$ 54,119	$ 48,774	$ 156,821	$ 140,015
Eliminations
Business Segments
Total Revenue	(763)	(137)	(1,747)	(235)
United States
Business Segments
Total Revenue	39,522	35,047	113,962	99,000
International
Business Segments
Total Revenue	$ 14,597	$ 13,727	$ 42,859	$ 41,015
Concentration percentage	0.00%	0.00%	0.00%	0.00%
Registrar services | Operating segment
Business Segments
Total Revenue	$ 43,953	$ 40,907	$ 129,233	$ 117,847
Registry services | Operating segment
Business Segments
Total Revenue	2,382	562	5,912	820
Aftermarket and other | Operating segment
Business Segments
Total Revenue	$ 8,547	$ 7,442	$ 23,423	$ 21,583