Proposed Separation of GoTo Business (Details) - USD ($) $ in Thousands, shares in Millions		3 Months Ended		9 Months Ended
	Jul. 26, 2016	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Restructuring Cost and Reserve [Line Items]
Separation costs		$ 17,580	$ 0	$ 46,190	$ 0
Separation Costs, Spinoff Transaction Cost Incurred		52,500		52,500
Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Expected separation costs		120,000		120,000
Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Expected separation costs		$ 130,000		$ 130,000
GetGo, Inc. [Member]
Restructuring Cost and Reserve [Line Items]
LogMeIn common stock received in merger (shares)	26.9