Summary of Significant Accounting Policies - Summary of Calculation of Basic and Diluted Net Loss Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Accounting Policies [Abstract]
Net loss attributable to Endurance International Group	$ (35,388)	$ 21,811
Net loss per share attributable to Endurance International Group Holdings, Inc.:
Basic net income (loss) per share (in usd per share)	$ (0.26)	$ 0.17
Diluted net income (loss) per share (in usd per share)	$ (0.26)	$ 0.16
Weighted-average common shares used in computing net income (loss) per share attributable to Endurance International Group Holdings, Inc.:
Weighted average number of basic shares outstanding (in shares)	134,935,153	132,178,693
Weighted average number of diluted shares outstanding (in shares)	134,935,153	133,563,884