gTLD Deposits (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Deposits for gtld applications	$ 8,415		$ 8,415		$ 21,180
Payments and deposits for gTLD applications			10,273	$ 20,048	32,000
Gain (Loss) on Disposition of Other Assets	$ 1,721	$ 8,558	8,682	$ 14,303
Certain gTLD operator rights
Amount transferred into intangible assets during the period			$ 25,100		$ 26,500