Endurance International 10-K 28 Feb 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Feb. 21, 2014	Jun. 28, 2013
Document And Entity Information [Abstract]	'	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Entity Registrant Name	'Endurance International Group Holdings, Inc.	'	'
Entity Central Index Key	'0001237746	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Filer Category	'Non-accelerated Filer	'	'
Entity Common Stock, Shares Outstanding	'	129,105,465	'
Entity Public Float	'	'	$0

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$66,815	$23,245
Restricted cash	1,983	888
Accounts receivable	7,160	5,824
Deferred tax asset-short term	12,981	12,093
Prepaid expenses and other current assets	29,862	26,093
Total current assets	118,801	68,143
Property and equipment-net	49,715	34,604
Goodwill	984,207	936,746
Other intangible assets-net	406,140	480,690
Deferred financing costs	430	1,481
Investment	6,535	10,227
Other assets	15,110	6,245
Total assets	1,580,938	1,538,136
Current liabilities:	'	'
Accounts payable	7,950	8,007
Accrued expenses	35,433	31,267
Deferred revenue	194,196	151,078
Current portion of notes payable	10,500	23,000
Deferred consideration-short term	24,437	52,878
Other current liabilities	6,796	5,766
Total current liabilities	279,312	271,996
Long-term deferred revenue	55,298	36,291
Notes payable-long term	1,036,875	1,107,000
Deferred tax liability-long term	26,171	27,579
Deferred consideration	4,207	24,501
Other liabilities	3,041	614
Total liabilities	1,404,904	1,467,981
Redeemable non-controlling interest	20,772	'
Commitments and contingencies	'	'
Stockholders' equity (deficit):	'	'
Preferred Stock-par value $0.0001; 5,000,000 shares authorized; no shares issued or outstanding	'	'
Common Stock-par value $0.0001; 500,000,000 shares authorized; 105,187,363 and 124,788,853 shares issued at December 31, 2012 and December 31, 2013, respectively; 96,745,992 and 124,766,544 outstanding at December 31, 2012 and December 31, 2013, respectively	13	11
Additional paid-in capital	754,720	509,714
Accumulated other comprehensive loss	-55	'
Accumulated deficit	-598,757	-439,570
Total stockholders' equity attributable to Endurance International Group Holdings, Inc.	155,921	70,155
Non-controlling interest in consolidated subsidiary	-659	'
Total stockholders' equity	155,262	70,155
Total liabilities, redeemable non-controlling interest and stockholders' equity	$1,580,938	$1,538,136

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Oct. 30, 2013	Oct. 23, 2013	Dec. 31, 2012	Dec. 22, 2011	Dec. 13, 2011	Dec. 31, 2010
Statement Of Financial Position [Abstract]	'	'	'	'	'	'	'
Preferred stock, par value	$0.00	'	$0.00	$0.00	'	'	$0.01
Preferred stock, shares authorized	5,000,000	'	5,000,000	5,000,000	'	'	275,000
Preferred stock, shares issued	'	'	'	'	'	'	'
Preferred stock, shares outstanding	'	'	'	'	'	5,998,500	'
Common stock, par value	$0.00	'	$0.00	$0.00	'	'	$0.01
Common stock, shares authorized	500,000,000	'	500,000,000	500,000,000	'	'	2,500
Common stock, shares issued	124,788,853	21,051,000	105,187,363	105,187,363	105,187,363	'	'
Common stock, shares outstanding	124,766,544	'	105,187,363	96,745,992	'	'	'

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	12 Months Ended	0 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 21, 2011	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012
	Predecessor [Member]	Successor [Member]	Successor [Member]	Successor [Member]
Revenue	$187,340	$2,967	$520,296	$292,156
Cost of revenue	133,399	3,901	350,103	237,179
Gross profit	53,941	-934	170,193	54,977
Operating expense:	'	'	'	'
Sales and marketing	54,932	1,482	117,689	83,110
Engineering and development	5,538	101	23,205	13,803
General and administrative	16,938	3,755	92,347	48,411
Total operating expense	77,408	5,338	233,241	145,324
Loss from operations	-23,467	-6,272	-63,048	-90,347
Other expense:	'	'	'	'
Interest income	6	'	122	34
Interest expense	-50,297	-855	-98,449	-126,165
Total other expense-net	-50,291	-855	-98,327	-126,131
Loss before income taxes and equity earnings of unconsolidated entities	-73,758	-7,127	-161,375	-216,478
Income tax expense (benefit)	126	-2,746	-3,596	-77,203
Loss before equity earnings of unconsolidated entities	-73,884	-4,381	-157,779	-139,275
Equity loss of unconsolidated entities, net of tax	'	'	2,067	23
Net loss	-73,884	-4,381	-159,846	-139,298
Net loss attributable to non-controlling interest	'	'	-659	'
Net loss attributable to Endurance International Group Holdings, Inc.	-73,884	-4,381	-159,187	-139,298
Comprehensive loss:	'	'	'	'
Foreign currency translation adjustments	'	'	-55	'
Total comprehensive loss	($73,884)	($4,381)	($159,242)	($139,298)
Net loss per share attributable to Endurance International Group Holdings, Inc.-basic and diluted	'	($0.05)	($1.55)	($1.44)
Weighted-average number of common shares used in computing net loss per share attributable to Endurance International Group Holdings, Inc.-basic and diluted	'	96,370,134	102,698,773	96,562,674

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Shareholders' Equity (USD $)

Total

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Successor [Member]

Successor [Member]

Series A Preferred Stock [Member]

Series A Preferred Stock [Member]

Series C Preferred Stock [Member]

Series C Preferred Stock [Member]

Series D Preferred Stock [Member]

Series D Preferred Stock [Member]

Series E Preferred Stock [Member]

Common Stock [Member]

Common Stock [Member]

Additional Paid-in Capital [Member]

Additional Paid-in Capital [Member]

Accumulated Other Comprehensive Income [Member]

Accumulated Deficit [Member]

Accumulated Deficit [Member]

Accumulated Deficit [Member]

Accumulated Deficit [Member]

Accumulated Deficit [Member]

Stockholders' Equity, Total [Member]

Stockholders' Equity, Total [Member]

Stockholders' Equity, Total [Member]

Stockholders' Equity, Total [Member]

Stockholders' Equity, Total [Member]

Non Controlling [Member]

USD ($)

USD ($)

Series D Preferred Stock [Member]

Series C Preferred Stock [Member]

USD ($)

Series E Preferred Stock [Member]

Predecessor [Member]

Successor [Member]

Predecessor [Member]

Successor [Member]

Predecessor [Member]

Successor [Member]

Successor [Member]

Predecessor [Member]

Successor [Member]

Predecessor [Member]

Successor [Member]

Successor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Successor [Member]

Successor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Series D Preferred Stock [Member]

Series C Preferred Stock [Member]

USD ($)

Series E Preferred Stock [Member]

USD ($)

Series D Preferred Stock [Member]

Series C Preferred Stock [Member]

USD ($)

Series E Preferred Stock [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Beginning balance at Dec. 31, 2010

'

$52,353,000

'

'

'

'

$5,929,000

'

$18,606,000

'

'

'

'

'

'

$91,706,000

'

'

($63,888,000)

'

'

'

'

$52,353,000

'

'

'

'

'

Beginning balance, shares at Dec. 31, 2010

'

'

'

'

'

'

5,999

'

20,920

'

'

'

'

1,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net loss

'

-73,884,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-73,884,000

'

'

'

'

-73,884,000

'

'

'

'

'

Issuance of stock

'

38,000,000

'

'

'

'

'

'

'

'

38,000,000

'

'

'

'

'

'

'

'

'

'

'

'

38,000,000

'

'

'

'

'

Issuance of stock, shares

'

'

'

'

'

'

'

'

'

'

38,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Redemption of preferred stock

'

-38,000,000

'

'

'

'

'

'

'

'

-38,000,000

'

'

'

'

'

'

'

'

'

'

'

'

-38,000,000

'

'

'

'

'

Redemption of preferred stock, shares

'

'

'

'

'

'

'

'

-20,920,000

'

-38,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Redemption of preferred stock

'

-20,919,000

'

'

'

'

'

'

-18,606,000

'

'

'

'

'

'

-2,257,000

'

'

-56,000

'

'

'

'

-20,919,000

'

'

'

'

'

Redemption of preferred stock, shares

'

'

'

'

'

'

'

'

-20,920,000

'

-38,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contribution of stockholders note in parent LLC to subsidiary Endurance International Group

'

440,000

'

'

'

'

'

'

'

'

'

'

'

'

'

440,000

'

'

'

'

'

'

'

440,000

'

'

'

'

'

Dividends paid on series C preferred stock

'

'

-1,953,000

-4,961,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-1,953,000

-4,961,000

'

'

'

-1,953,000

-4,961,000

'

'

'

Capital contribution

'

4,957,000

'

'

'

'

'

'

'

'

'

'

'

'

'

4,957,000

'

'

'

'

'

'

'

4,957,000

'

'

'

'

'

Exchange of series A preferred stock for class A member units of parent

'

'

'

'

'

'

-5,929,000

'

'

'

'

'

'

'

'

5,999,000

'

'

-70,000

'

'

'

'

'

'

'

'

'

'

Exchange of series A preferred stock for class A member units of parent, shares

'

'

'

'

'

'

-5,999

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Return of capital to parent (cash to repurchase stock)

'

-1,321,000

'

'

'

'

'

'

'

'

'

'

'

'

'

-1,321,000

'

'

'

'

'

'

'

-1,321,000

'

'

'

'

'

Stock-based compensation

'

1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

1,000,000

'

'

'

'

'

'

'

1,000,000

'

'

'

'

'

Ending balance at Dec. 21, 2011

'

-44,288,000

'

'

'

'

'

'

'

'

'

'

'

'

'

100,524,000

'

'

-144,812,000

'

'

'

'

-44,288,000

'

'

'

'

'

Ending balance, shares at Dec. 21, 2011

'

'

'

'

'

'

'

'

'

'

'

'

'

1,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Beginning balance at Jan. 10, 2011

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net loss

'

'

'

'

-4,381,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-4,381,000

'

'

'

'

-4,381,000

'

'

Issuance of stock

'

'

'

'

452,291,000

'

'

'

'

'

'

'

'

'

10,000

'

452,281,000

'

'

'

'

'

'

'

'

'

452,291,000

'

'

Issuance of stock, shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

96,370,113

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Subscription receivable

'

'

'

'

-100,000

'

'

'

'

'

'

'

'

'

'

'

-100,000

'

'

'

'

'

'

'

'

'

-100,000

'

'

Issuance costs of series E preferred stock

'

'

'

'

-396,000

'

'

'

'

'

'

'

-396,000

'

'

'

'

'

'

'

'

'

'

'

'

'

-396,000

'

'

Capital contribution

'

'

'

'

55,126,000

'

'

'

'

'

'

'

'

'

'

'

55,126,000

'

'

'

'

'

'

'

'

'

55,126,000

'

'

Issuance of series E preferred stock

'

'

'

'

150,000,000

'

'

'

'

'

'

'

150,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

150,000,000

'

'

Issuance of series E preferred stock, shares

'

'

'

'

'

'

'

'

'

'

'

'

150,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Ending balance at Dec. 31, 2011

'

'

'

'

652,540,000

'

'

'

'

'

'

'

149,604,000

'

10,000

'

507,307,000

'

'

'

'

-4,381,000

'

'

'

'

652,540,000

'

'

Ending balance, shares at Dec. 31, 2011

'

'

'

'

'

'

'

'

'

'

'

'

150,000

'

96,370,113

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Beginning balance at Dec. 22, 2011

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net loss

-4,381,000

'

'

'

-4,381,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Ending balance at Dec. 31, 2011

'

'

'

'

652,540,000

'

'

'

'

'

'

'

149,604,000

'

10,000

'

507,307,000

'

'

'

'

-4,381,000

'

'

'

'

652,540,000

'

'

Beginning balance, shares at Dec. 31, 2011

'

'

'

'

'

'

'

'

'

'

'

'

150,000

'

96,370,113

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Subscription payment

'

'

'

'

100,000

'

'

'

'

'

'

'

'

'

'

'

100,000

'

'

'

'

'

'

'

'

'

100,000

'

'

Net loss

-139,298,000

'

'

'

-139,298,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-139,298,000

'

'

'

'

-139,298,000

'

'

Redemption of preferred stock, shares

'

'

'

'

'

'

'

'

'

'

'

'

-150,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Redemption of preferred stock

'

'

'

'

-150,000,000

'

'

'

'

'

'

'

-150,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

-150,000,000

'

'

Redemption of preferred stock, shares

'

'

'

'

'

'

'

'

'

'

'

'

-150,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Issuance costs of series E preferred stock

'

'

'

'

-53,000

'

'

'

'

'

'

'

396,000

'

'

'

'

'

'

'

'

-449,000

'

'

'

'

-53,000

'

'

Dividends paid on series C preferred stock

'

'

'

'

'

-5,963,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-5,963,000

'

'

'

'

-5,963,000

'

Dividends paid on common stock

'

'

'

'

-289,479,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-289,479,000

'

'

'

'

-289,479,000

'

'

Vesting of restricted shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

375,879

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock-based compensation

'

'

'

'

2,308,000

'

'

'

'

'

'

'

'

'

'

'

2,308,000

'

'

'

'

'

'

'

'

'

2,308,000

'

'

Ending balance at Dec. 31, 2012

70,155,000

'

'

'

70,155,000

'

'

'

'

'

'

'

'

'

10,000

'

509,715,000

'

'

'

'

-439,570,000

'

'

'

'

70,155,000

'

'

Ending balance, shares at Dec. 31, 2012

'

'

'

'

'

'

'

'

'

'

'

'

'

'

96,745,992

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net loss

-159,187,000

'

'

'

-159,187,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-159,187,000

'

'

'

'

-159,187,000

'

-659,000

Issuance of stock

'

'

'

'

234,393,000

'

'

'

'

'

'

'

'

'

2,000

'

234,391,000

'

'

'

'

'

'

'

'

'

234,393,000

'

'

Issuance of stock, shares

21,049,004

'

'

'

'

'

'

'

'

'

'

'

'

'

21,051,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fractional share payment

'

'

'

'

-1,000

'

'

'

'

'

'

'

'

'

'

'

-1,000

'

'

'

'

'

'

'

'

'

-1,000

'

'

Fractional share payment, shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-47

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Vesting of restricted shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1

'

-1

'

'

'

'

'

'

'

'

'

'

'

'

Vesting of restricted shares, value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,971,595,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock returned to the Company

'

'

'

'

-24,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-24,000

'

'

Common stock returned to the Company, shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-1,996

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Retirement of treasury stock

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-24,000

'

'

'

'

'

'

'

'

'

'

'

'

Retirement of treasury stock, shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Noncontrolling interest accretion

'

'

'

'

-123,000

'

'

'

'

'

'

'

'

'

'

'

-123,000

'

'

'

'

'

'

'

'

'

-123,000

'

'

Foreign currency translation adjustments arising during the period

'

'

'

'

-55,000

'

'

'

'

'

'

'

'

'

'

'

'

-55,000

'

'

'

'

'

'

'

'

-55,000

'

'

Stock-based compensation

'

'

'

'

10,763,000

'

'

'

'

'

'

'

'

'

'

'

10,763,000

'

'

'

'

'

'

'

'

'

10,763,000

'

'

Ending balance at Dec. 31, 2013

$155,921,000

'

'

'

$155,262,000

'

'

'

'

'

'

'

'

'

$13,000

'

$754,720,000

($55,000)

'

'

'

($598,757,000)

'

'

'

'

$155,921,000

'

($659,000)

Ending balance, shares at Dec. 31, 2013

'

'

'

'

'

'

'

'

'

'

'

'

'

'

124,766,544,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Consolidated_Statements_of_Cha1

Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) (Successor [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013
Issuance costs of common stock in connection with initial public offering	$18,219,271
Common Stock [Member]	'
Issuance costs of common stock in connection with initial public offering	18,219,271
Additional Paid-in Capital [Member]	'
Issuance costs of common stock in connection with initial public offering	18,219,271
Stockholders' Equity, Total [Member]	'
Issuance costs of common stock in connection with initial public offering	$18,219,271

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended			0 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 21, 2011	Dec. 21, 2011	Dec. 21, 2011	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Successor [Member]	Successor [Member]	Successor [Member]	Successor [Member]
		Series D Preferred Stock [Member]	Series C- And Series D- Preferred Stock [Member]
Cash flows from operating activities:	'	'	'	'	'	'	'
Net loss	($73,884)	'	'	($4,381)	($159,187)	($139,298)	($4,381)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:	'	'	'	'	'	'	'
Depreciation of property and equipment	3,481	'	'	114	18,615	6,869	'
Amortization of other intangible assets	50,443	'	'	1,735	105,915	88,118	'
Amortization of deferred financing costs	23,781	'	'	97	2,768	43,405	'
Amortization of net present value of deferred consideration	'	'	'	'	1,590	1,093	'
Stock-based compensation	1,000	'	'	'	10,763	2,308	'
Deferred tax benefit	'	'	'	-2,756	-4,777	-77,610	'
Loss on sale of property and equipment	31	'	'	'	309	469	'
Loss of unconsolidated entities	'	'	'	'	2,067	23	'
Benefit from change in deferred consideration	'	'	'	'	-466	'	'
Financing costs expensed	'	'	'	'	10,833	29,281	'
Changes in operating assets and liabilities:	'	'	'	'	'	'	'
Accounts receivable	-954	'	'	-570	-1,075	-268	'
Prepaid expenses and other current assets	-14,245	'	'	-757	-7,147	-22,199	'
Accounts payable and accrued expenses	5,069	'	'	900	2,020	19,058	'
Deferred revenue	52,503	'	'	4,662	51,047	104,069	'
Net cash provided by (used in) operating activities	47,225	'	'	-956	32,616	55,318	'
Cash flows from investing activities	'	'	'	'	'	'	'
Business acquired in purchase transaction, net of cash acquired	-55,081	'	'	-472,193	-38,659	-299,165	'
Proceeds from sale of assets	'	'	'	'	23	'	'
Cash paid for minority investment	'	'	'	'	'	-250	'
Purchases of property and equipment	-6,638	'	'	-7	-33,523	-28,163	'
Purchases of intangible assets	'	'	'	'	-751	'	'
Proceeds from sale of property and equipment	18	'	'	'	54	127	'
Net (deposits) and withdrawals of principal balances in restricted cash accounts	-1,013	'	'	50	-231	3,947	'
Net cash used in investing activities	-62,714	'	'	-472,150	-73,087	-323,504	'
Cash flows from financing activities:	'	'	'	'	'	'	'
Proceeds from issuance of term loan	305,000	'	'	350,000	1,145,000	1,925,000	'
Proceeds from borrowing of revolver	13,400	'	'	'	57,000	15,000	'
Repayment of term loan	-193,840	'	'	-305,000	-1,212,625	-1,160,000	'
Repayment of revolver	-21,400	'	'	'	-72,000	'	'
Payment of financing costs	-19,160	'	'	-21,374	-12,552	-52,890	'
Deferred consideration	-35,029	'	'	'	-55,635	-7,237	'
Net return of capital to parent company EIG International	-1,321	'	'	'	'	'	'
Proceeds from issuance of common stock	'	'	'	452,191	252,612	100	'
Issuance costs of common stock	'	'	'	'	-17,512	'	'
Payment of dividends on common stock	'	'	'	'	'	-289,479	'
Issuance costs of series E preferred stock	'	'	'	-395	'	-53	'
Redemption of series E preferred stock	'	-38,000	'	'	'	-150,000	'
Dividends paid on series C and series D preferred stock	'	'	-6,914	'	'	-5,963	'
Proceeds from issuance (repurchase) of series C preferred stock	-20,920	'	'	'	'	'	'
Proceeds from issuance of series D preferred stock	38,000	'	'	'	'	'	'
Net cash provided by financing activities	19,816	'	'	475,422	84,288	274,478	'
Net effect of exchange rate on cash and cash equivalents	'	'	'	'	-247	'	'
Net increase in cash and cash equivalents	4,327	'	'	2,316	43,570	6,292	'
Cash and cash equivalents:	'	'	'	'	'	'	'
Beginning of period	10,310	'	'	14,637	23,245	16,953	'
End of period	14,637	'	'	16,953	66,815	23,245	16,953
Supplemental cash flow information:	'	'	'	'	'	'	'
Interest paid	24,024	'	'	4	100,856	70,176	'
Income taxes paid	$36	'	'	$9	$1,502	$796	'

Nature_of_Business

Nature of Business	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Nature of Business	'
	1. Nature of Business
	Formation and Nature of Business
	Endurance International Group Holdings, Inc., (“Holdings”) is a Delaware corporation which together with its wholly owned subsidiary company, EIG Investors Corp. (“EIG Investors”), its primary operating subsidiary company, The Endurance International Group, Inc. (“EIG”), and other subsidiary companies of EIG, collectively form the “Company”. The Company is a leading provider of cloud-based platform solutions designed to help small- and medium-sized businesses succeed online.
	EIG and EIG Investors were incorporated in April 1997 and May 2007, respectively, and Holdings was originally formed as a limited liability company in October 2011 in connection with the acquisition on December 22, 2011, of a controlling interest in EIG Investors, EIG and its subsidiary companies by investment funds and entities affiliated with Warburg Pincus and Goldman Sachs (the “Sponsor Acquisition”). On November 7, 2012, Holdings reorganized as a Delaware limited partnership and on June 25, 2013, converted into a Delaware C-corporation and changed its name to Endurance International Group Holdings, Inc.
	Stock Split and Restated Certificate of Incorporation
	On October 23, 2013, immediately after giving effect to a 105,187.363-for-one stock split, the Company had 105,187,363 shares of common stock issued and outstanding. After giving effect to the Company’s restated certificate of incorporation filed on October 23, 2013, the Company’s authorized capital stock consists of 500,000,000 shares of common stock, par value $0.0001 per share, and 5,000,000 shares of preferred stock, par value $0.0001 per share.
	Corporate Reorganization
	Pursuant to the terms of a corporate reorganization, that was completed following the stock split and prior to the completion of the Company’s initial public offering, as described below, the former direct owner of Holdings, a limited partnership, was dissolved and in liquidation distributed the shares of the Company’s common stock to its limited partners. The distribution of common stock to the limited partners was determined by the value each partner would have received under the distribution provisions of the limited partnership agreement, valued by reference to the initial public offering price.
	All share data in the consolidated financial statements retroactively reflects the shares of the Company’s common stock after giving effect to the 105,187.363-for-one stock split and the filing of the restated certificate of incorporation.
	Initial Public Offering
	On October 30, 2013, the Company closed an initial public offering of its common stock, which resulted in the sale of 21,051,000 shares of its common stock at a public offering price of $12.00 per share, before underwriting discounts. The offering resulted in gross proceeds of $252.6 million and net proceeds to the Company of $232.1 million after deducting underwriting discounts, commissions and estimated offering expenses payable by the Company. Offering expenses include both capitalized and non-capitalized expenses.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Summary of Significant Accounting Policies	'
	2. Summary of Significant Accounting Policies
	Basis of Preparation
	The accompanying consolidated financial statements, which include the accounts of the Company and its subsidiaries and reflect the Sponsor Acquisition, as described in Note 3, have been prepared using accounting principles generally accepted in the United States of America (“U.S. GAAP”). All intercompany transactions have been eliminated on consolidation. The Company has reviewed the criteria of the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 280-10, Segment Reporting, and determined that the Company is comprised of only one segment for reporting purposes.
	The Sponsor Acquisition was accounted for as a purchase in accordance with the FASB ASC 805, Business Combinations (“ASC 805”), and the purchase price was recorded in the Company’s consolidated financial statements. The acquired company’s financial statements reflect the new accounting basis recorded by the acquiring company. Accordingly, the Company’s purchase accounting adjustments have been reflected in the Company’s financial statements for the period commencing December 22, 2011 and reflect the estimated fair value of the Company’s assets and liabilities as of December 22, 2011, the date of the Sponsor Acquisition.
	As a result of the Sponsor Acquisition, the period from January 1, 2011 to December 21, 2011, for which the Company’s results of operations and cash flows are presented, are reported as the “Predecessor” period. The period from December 22, 2011 through December 31, 2011 and the years ended December 31, 2012 and 2013, for which the Company’s results of operations and cash flows are presented, are reported as the “Successor” period.
	Holdings had no ownership interest in the Company prior to December 22, 2011. Therefore, for comparative reporting purposes, the Company reports its financial results, as presented in the Predecessor period, at the EIG Investors company level, which was the primary holding company until the Sponsor Acquisition. Because there was no activity in the Company prior to the Sponsor Acquisition, nor was there any change in the number of shares issued or the par value of the shares of EIG Investors, it was determined that the Company is essentially the same as EIG Investors. Therefore, the retroactive presentation of the conversion includes equity activity of EIG Investors for the successor period and the conversion has not been applied to the predecessor period.
	The June 25, 2013 conversion of the Company into a Delaware C-corporation, as discussed in Note 1, has been applied to the Company’s financial statements retroactively to December 22, 2011, as if the conversion was effective December 22, 2011.
	Use of Estimates
	U.S. GAAP requires management to make certain estimates, judgments and assumptions that affect the reported amounts of assets, liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. These estimates, judgments and assumptions used in preparing the accompanying consolidated financial statements are based on the relevant facts and circumstances as of the date of the consolidated financial statements. Although the Company regularly assesses these estimates, judgments and assumptions used in preparing the consolidated financial statements, actual results could differ from those estimates. Changes in estimates are recorded in the period in which they become known. The more significant estimates reflected in these consolidated financial statements include estimates of fair value of assets acquired and liabilities assumed under purchase accounting related to the Company’s acquisitions and when evaluating goodwill and long-lived assets for potential impairment, the estimated useful lives of intangible and depreciable assets, stock-based compensation, certain accruals, reserves and deferred taxes.
	Cash Equivalents
	Cash and cash equivalents include all highly liquid investments with remaining maturities of three months or less at the date of purchase.
	Restricted Cash
	Restricted cash is composed of certificates of deposits and cash held by merchant banks and payment processors, which provide collateral against any charge-backs, fees, or other items that may be charged back to the Company by credit card companies and other merchants.
	Accounts Receivable
	Accounts receivable is primarily composed of cash due from credit card companies for unsettled transactions charged to subscribers’ credit cards. As these amounts reflect authenticated transactions that are fully collectible, the Company does not maintain an allowance for doubtful accounts. The Company also accrues for earned referral fees and commissions, which are governed by reseller or affiliate agreements, when the amount is reasonably estimable.
	Fair Value of Financial Instruments
	The carrying amounts of the Company’s financial instruments, which include cash equivalents, accounts receivable, accounts payable and certain accrued expenses, approximate their fair values due to their short maturities. The fair value of the Company’s notes payable are based on the borrowing rates currently available to the Company for debt with similar terms and average maturities and approximate their carrying value.
	Concentrations of Credit and Other Risks
	Financial instruments which potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents and accounts receivable. Cash and cash equivalents are maintained at accredited financial institutions, and PayPal balances are at times without and in excess of federally insured limits. The Company has never experienced any losses related to these balances and does not believe that it is subject to unusual credit risk beyond the normal credit risk associated with commercial banking relationships.
	For the Predecessor and Successor periods in 2011 and the years ended December 31, 2012 and 2013, no subscriber represented 10% or more of the Company’s total revenue.
	Property and Equipment
	Property and equipment is recorded at cost or fair value if acquired in an acquisition. The Company also capitalizes the direct costs of constructing additional computer equipment for internal use, as well as upgrades to existing computer equipment which extend the useful life, capacity or operating efficiency of the equipment. Capitalized costs include the cost of materials, shipping and taxes. Materials used for repairs and maintenance of computer equipment are expensed and recorded as a cost of revenue. Materials on hand and construction-in-process are recorded as property and equipment. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets as follows:
	Software	Two years
	Computers and office equipment	Three years
	Furniture and fixtures	Five years
	Leasehold improvements	Shorter of useful life or remaining term of the lease
	Software Development Costs
	The Company accounts for software development costs for internal use software under the provisions of ASC 350-40, “Internal-Use Software” (“ASC 350”). Accordingly, certain costs to develop internal-use computer software are capitalized, provided these costs are expected to be recoverable. There were no such costs capitalized during the year ended December 31, 2012. There was $1.2 million of software development costs capitalized for the year ended December 31, 2013.
	Investments
	In 2012, the Company made two minority investments in privately-held companies. The Company’s voting interest in each of these companies was between 25% and 50%. The Company accounts for these investments under the equity method of accounting. Under this method, the investment balance, originally recorded at cost, is adjusted to recognize the Company’s share of net earnings or losses of the investee company as they occur, limited to the extent of the Company’s investment in, advances to and commitments for the investee. The Company’s share of net earnings or losses of the investee are reflected in equity losses of unconsolidated entities, net of tax, in the Company’s accompanying consolidated statements of operations.
	The Company assesses the need to record impairment losses on its investments and records such losses when the impairment of an investment is determined to be other than temporary in nature. On October 31, 2013 the Company reduced its 50% voting interest in one of the minority investments to 40% and recorded a $2.6 million impairment charge (see Note 7).
	Goodwill
	Goodwill relates to amounts that arose in connection with the Company’s various business combinations and represents the difference between the purchase price and the fair value of the identifiable intangible and tangible net assets when accounted for using the acquisition method of accounting. Goodwill is not amortized, but is subject to periodic review for impairment. Events that would indicate impairment and trigger an interim impairment assessment include, but are not limited to, current economic and market conditions, including a decline in value, a significant adverse change in certain agreements that would materially affect reported operating results, business climate or operational performance of the business and an adverse action or assessment by a regulator.
	In accordance with ASC 350, Intangibles—Goodwill and Other, (“ASC 350”), the Company is required to review goodwill by reporting unit for impairment at least annually or more often if there are indicators of impairment present. The Company has determined its entire business represents one reporting unit. Historically, the Company has performed its annual impairment analysis during the fourth quarter of each year. The provisions of ASC 350 require that a two-step impairment test be performed for goodwill. In the first step, the Company compares the fair value of its reporting unit to which goodwill has been allocated to its carrying value. If the fair value of the reporting unit exceeds the carrying value of the net assets assigned to that reporting unit, goodwill is considered not impaired and the Company is not required to perform further testing. If the carrying value of the net assets assigned to the reporting unit exceeds the fair value of the reporting unit, then the Company must perform the second step of the impairment test in order to determine the implied fair value of the reporting unit’s goodwill. If the carrying value of a reporting unit’s goodwill exceeds its implied fair value, then the Company would record an impairment loss equal to the difference.
	Due to the timing of the Sponsor Acquisition on December 22, 2011, and the absence of indicators or impairment through the year ended December 31, 2011, the Company recorded no impairment of goodwill for the 2011 successor period ended December 31, 2011. As of December 31, 2012 and 2013, the fair value of the Company’s reporting unit exceeded the carrying value of the reporting unit’s net assets by more than 600% and, therefore no impairment existed as of those dates.
	Determining the fair value of a reporting unit, if applicable, requires the Company to make judgments and involves the use of significant estimates and assumptions. These estimates and assumptions relate to, among other things, revenue growth rates and operating margins used to calculate projected future cash flows, risk-adjusted discount rates, future economic and market conditions and determination of appropriate market comparables. The Company bases its fair value estimates on assumptions it believes to be reasonable but that are unpredictable and inherently uncertain. Actual future results may differ from those estimates.
	The Company had goodwill of $936.7 million and $984.2 million as of December 31, 2012 and 2013, respectively, and no impairment charges have been recorded.
	Long-Lived Assets
	The Company’s long-lived assets consist primarily of intangible assets, including acquired subscriber relationships, trade names, intellectual property, developed technology, in-process research and development (“IPR&D”). We also have long-lived tangible assets, primarily consisting of property and equipment. The majority of the Company’s intangibles are recorded in connection with its various business combinations, including the Sponsor Acquisition. The Company’s intangibles are recorded at fair value at the time of their acquisition. The Company amortizes intangibles over their estimated useful lives.
	Determination of the estimated useful lives of the individual categories of intangible assets is based on the nature of the applicable intangible asset and the expected future cash flows to be derived from the intangible asset. Amortization of intangible assets with finite lives is recognized in accordance with their estimated projected cash flows.
	The Company evaluates long-lived intangible and tangible assets whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If indicators of impairment are present and undiscounted future cash flows are less than the carrying amount, the fair value of the assets is determined and compared to the carrying value. If the fair value is less than the carrying value, then the carrying value of the asset is reduced to the estimated fair value and an impairment loss is charged to expense in the period the impairment is identified. No such impairment losses have been identified in the Predecessor and Successor periods in 2011 and for the years ended December 31, 2012 and 2013.
	Acquired In-Process Research and Development (IPR&D)
	Acquired IPR&D represents the fair value assigned to research and development assets that the Company acquires that have not been completed at the date of acquisition. The acquired IPR&D is capitalized as an intangible asset and reviewed on a quarterly basis to determine future use. Any impairment loss of the acquired IPR&D is charged to expense in the period the impairment is identified. Upon commercialization, the acquired fair value of the IPR&D will be amortized over its estimated useful life. No such impairment losses have been identified in the Predecessor and Successor periods in 2011 and the years ended December 31, 2012 and 2013. During 2013 the Company completed its development process of in-process research and development it had acquired as of December 31, 2012 and the capitalized amount was reclassified to developed technology as of December 31, 2013 and is being amortized over the estimated useful life.
	Deferred Financing Costs
	Deferred financing costs comprise fees and costs incurred by the Company in connection with obtaining notes payable. Deferred financing costs are amortized over the term of the related debt agreement.
	Revenue Recognition
	The Company generates revenue from selling subscriptions for cloud-based products and services. The subscriptions are similar across all of the Company’s brands and are provided under contracts pursuant to which the Company has ongoing obligations to support the subscriber. These contracts are generally for service periods of up to 36 months and typically require payment in advance. The Company recognizes the associated revenue ratably over the service period, whether the associated revenue is derived from a direct subscriber or through a reseller. Deferred revenue represents the liability to subscribers for advance billings for services not yet provided and the fair value of the assumed liability outstanding for subscriber relationships purchased in an acquisition.
	The Company sells domain name registrations that provide a subscriber with the exclusive use of a domain name. These domains are obtained either by one of the Company’s registrars on the subscriber’s behalf, or by the Company from third-party registrars on the subscriber’s behalf. Domain registration fees are non-refundable.
	Revenue from the sale of a domain name registration by a registrar within the Company is recognized ratably over the subscriber’s service period as the Company has the obligation to provide support over the domain term. Revenue from the sale of a domain name registration purchased by the Company from a third-party registrar is recognized when the subscriber is billed on a gross basis as there are no remaining Company obligations once the sale to the subscriber occurs, and the Company has full discretion on the sales price and bears all credit risk.
	Revenue from the sale of non-term based applications and services, such as online security products and professional technical services, referral fees and commissions, is recognized when the product is purchased, the service is provided or the referral fee or commission is earned, respectively.
	A substantial amount of the Company’s revenue is generated from transactions that are multiple-element services arrangements that may include hosting plans, domain name registrations, and cloud-based products and services.
	The Company follows the provisions of the FASB, Accounting Standards Update (“ASU”) No. 2009-13, (“ASU 2009-13”), Revenue Recognition (Topic 605), Multiple-Deliverable Revenue Arrangements—a consensus of the FASB Emerging Issues Task Force and allocates revenue to each deliverable in a multiple- element service arrangement based on its respective relative selling price.
	Under ASU 2009-13, to treat deliverables in a multiple-element service arrangement as separate units of accounting, the deliverables must have standalone value upon delivery. If the deliverables have standalone value upon delivery, the Company accounts for each deliverable separately. Hosting services, domain name registrations, cloud-based products and services have standalone value and are often sold separately.
	When multiple deliverables included in a multiple-element service arrangement are separated into different units of accounting, the total transaction amount is allocated to the identified separate units based on a relative selling price hierarchy. The Company determines the relative selling price for a deliverable based on vendor specific objective evidence, (“VSOE”), of fair value, if available, or best estimate of selling price, (“BESP”), if VSOE is not available. The Company has determined that third-party evidence of selling price, (“TPE”), is not a practical alternative due to differences in its multi-brand offerings compared to competitors and the lack of availability of relevant third-party pricing information. The Company has not established VSOE for our offerings due to lack of pricing consistency, the introduction of new products, services and other factors. Accordingly, the Company generally allocates revenue to the deliverables in the arrangement based on the BESP. The Company determines BESP by considering its relative selling prices, competitive prices in the marketplace and management judgment; these selling prices, however, may vary depending upon the particular facts and circumstances related to each deliverable. The Company analyzes the selling prices used in its allocation of transaction amount, at a minimum, on a quarterly basis. Selling prices are analyzed on a more frequent basis if a significant change in our business necessitates a more timely analysis.
	Direct Costs of Revenue
	The Company’s direct costs of revenue include only those costs directly incurred in connection with the provision of its cloud-based products and services. The direct costs of registering domain names with registries are spread over the terms of the arrangement and the cost of reselling domains of other third-party registrars are expensed as incurred. Cost of revenue includes depreciation on data center equipment and support infrastructure and amortization expense related to the amortization of long-lived intangible assets.
	Engineering and Development Costs
	Engineering and development costs incurred in the development and maintenance of the Company’s technology infrastructure are expensed as incurred.
	Sales and Marketing Costs
	The Company engages in sales and marketing through various online marketing channels, which include affiliate and search marketing as well as online partnerships. The Company expenses sales and marketing costs as incurred. For the Predecessor and Successor periods in 2011 and the years ended December 31, 2012 and 2013, the Company’s sales and marketing costs were $54.9 million, $1.5 million, $83.1 million and $117.7 million, respectively.
	Foreign Currency
	The Company has sales in a number of foreign currencies. In 2013, the Company commenced operations in foreign locations which report in the local currency. The assets and liabilities of the Company’s foreign locations are translated into U.S. dollars at current exchange rates as of the balance sheet date, and revenues and expenses are translated at average monthly exchange rates. The resulting translation adjustments are recorded as a separate component of stockholders’ equity and have not been material. Foreign currency transaction gains and losses relate to the settlement of assets or liabilities in another currency.
	Foreign currency transaction gains (losses) were not material during the Predecessor and Successor periods in 2011, and the year ended December 31, 2012. Foreign currency transaction losses were $1.2 million during the year ended December 31, 2013. These amounts are recorded in general and administrative expense.
Income Taxes
Income taxes are accounted for in accordance with ASC 740, Accounting for Income Taxes, (“ASC 740”). Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carry-forwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.
ASC 740 clarifies the accounting for income taxes, by prescribing a minimum recognition threshold that a tax position is required to meet before being recognized in the financial statements. The Company recognizes the effect of income tax positions only if those positions are more likely than not of being sustained. Recognized income tax positions are measured at the largest amount that is more likely than not to be realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. There were no unrecognized tax benefits in the Predecessor and Successor Periods in 2011, and the years ended December 31, 2012 and 2013.
The Company records interest related to unrecognized tax benefits in interest expense and penalties in operating expenses. During the Predecessor and Successor periods in 2011, and the years ended December 31, 2012 and 2013, the Company did not recognize any interest and penalties related to unrecognized tax benefits.
Stock-Based Compensation
The Company follows the provisions of ASC 718, Compensation—Stock Compensation (“ASC 718”), which requires employee stock-based payments to be accounted for under the fair value method. Under this method, the Company is required to record compensation cost based on the estimated fair value for stock-based awards granted over the requisite service periods for the individual awards, which generally equals the vesting periods. The Company uses the straight-line amortization method for recognizing stock-based compensation expense.
The Company estimates the fair value of employee stock options on the date of grant using the Black-Scholes option-pricing model, which requires the use of highly subjective estimates and assumptions. For restricted stock awards granted, the Company estimates the fair value of each restricted stock award based on the closing trading price of its common stock on the date of grant.
Net Loss per Share
The Company considered ASC 260-10, Earnings per Share, (ASC 260-10) which requires the presentation of both basic and diluted earnings per share in the Consolidated Statements of Operations. The Company’s basic net loss per share is computed by dividing net loss by the weighted average number of shares of common stock outstanding for the period and, if there are dilutive securities, diluted income per share is computed by including common stock equivalents which includes shares issuable upon the exercise of stock options, net of shares assumed to have been purchased with the proceeds, using the treasury stock method. All share data retroactively reflect the shares of the Company’s common stock after giving effect to the 105,187.363-for-one stock split and the filing of the restated certificate of incorporation.
The Company’s potentially dilutive shares of common stock would be excluded from the diluted weighted-average number of shares of common stock outstanding as their inclusion in the computation would be anti-dilutive due to net losses. For the years ended December 31, 2011, 2012 and 2013, non-vested shares, stock options, restricted stock awards and restricted stock units amounting to zero, 8,108,177 and 8,822,924, respectively, were excluded from the denominator in the calculation of diluted earnings per share as their inclusion would have been anti-dilutive.
	Period from			Year Ended			Year Ended
	December 22			December 31,			December 31,
	through			2012			2013
	December 31,
	2011
	(in thousands, except share
	amount and per share data)
Computation of basic and diluted net loss per share:
Net loss attributable to Endurance International Group Holdings, Inc.	$	(4,381	)	$	(139,298	)	$	(159,187	)
Net loss per share attributable to Endurance International Group Holdings, Inc.:
Basic and diluted	$	(0.05	)	$	(1.44	)	$	(1.55	)
Weighted average number of shares of common stock used to compute net loss per share attributable to Endurance International Group Holdings, Inc.:
Basic and diluted		96,370,134			96,562,674			102,698,773
Guarantees
The Company has the following guarantees and indemnifications:
In connection with its acquisitions of companies and assets from third parties, the Company may provide indemnification or guarantees to the sellers in the event of damages for breaches or other claims covered by such agreements.
In connection with various vendor contracts, including those by which a product or service of a third party is offered to subscribers of the Company, standard guaranty of subsidiary obligations and indemnification obligations exist.
Pursuant to the purchase agreement for the acquisition of Homestead, the Company assumed a reseller agreement between the former owner of Homestead and a reseller. In accordance with the reseller agreement, the Company has indemnified its reseller for certain losses related to a patent litigation matter. The former owner of Homestead is defending this action, paying for the legal expenses incurred, and indemnifying the Company, subject to a deductible and a limit. Any settlements or indemnity claims also remain subject to the terms of indemnification provided in the purchase agreement. The litigation is in the early stages and the outcome is unknown and the Company therefore cannot reasonably estimate potential losses at this time.
As permitted under Delaware and other applicable law, the Company’s charter and by-laws and those of its subsidiary companies provide that the Company shall indemnify its officers and directors for certain liabilities, including those incurred by reason of the fact that the officer or director is, was, or has agreed to serve as an officer or director of the Company. The maximum potential amount of future payments the Company could be required to make under these indemnification provisions is unlimited.
The Company leases office space and equipment under various operating leases. The Company has standard indemnification arrangements under these leases that require the Company to indemnify the lessor against losses, liabilities and claims incurred in connection with the premises or equipment covered by the Company’s lease agreements, the Company’s use of the premises, property damage or personal injury and breach of the agreement.
Through December 31, 2013, the Company had not experienced any losses related to these indemnification obligations and no claims with respect thereto were outstanding other than the Homestead claim as described above. The Company does not expect significant claims related to these indemnification obligations and consequently concluded that the fair value of these obligations is negligible and no related liabilities were established.
Recent Accounting Pronouncements
In February 2013, the FASB issued ASU No. 2013-02, Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income (‘‘ASU 2013-02’’) to improve the reporting of reclassifications out of accumulated other comprehensive income. ASU 2013-02 requires an entity to report the effect of reclassifications out of accumulated other comprehensive income on the respective line items in net income if the amount being reclassified is required under U.S. GAAP to be reclassified in its entirety to net income. For accumulated other comprehensive income reclassification items that are not required under U.S. GAAP to be reclassified in their entirety into net income in the same reporting period, entities must provide a cross reference to other required U.S. GAAP disclosures that provide additional detail about those amounts. ASU 2013-02 became effective for fiscal years, and interim periods within those years, beginning after December 15, 2012. The adoption of ASU 2013-02 did not have any impact on the Company’s consolidated financial statements.
In March 2013, the FASB issued ASU No. 2013-05, Parent’s Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity (‘‘ASU 2013-05’’). ASU 2013-05 addresses the accounting for the cumulative translation adjustment when a parent either sells a part or all of its investment in a foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets that is a nonprofit activity or a business within a foreign entity. ASU 2013-05 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013 and should be applied prospectively. The Company believes the adoption of ASU 2013-05 will not have any impact on its consolidated financial statements.
In July 2013, the FASB issued ASU No. 2013-11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carry-forward, a Similar Tax Loss, or a Tax Credit Carry-forward Exists (“ASU 2013-11”) to clarify that an unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss (“NOL”) carry-forward, a similar tax loss, or a tax credit carry-forward, with some allowed exceptions. ASU 2013-11 does not impose any new recurring disclosure requirements because it does not affect the recognition or measurement of uncertain tax positions. ASU 2013-11 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. The Company believes the adoption of ASU 2013-11 will not have an impact on its consolidated financial statements.
Reclassifications
In 2013, the Company has reclassified deferred consideration in the consolidated statements of cash flows from net cash used in investing activities to net cash provided by financing activities. Prior years have also been reclassified to conform to current year presentation.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2013
Business Combinations [Abstract]	'
Acquisitions	'
	3. Acquisitions
	The Company accounts for the acquisitions of businesses using the purchase method of accounting. The Company allocates the purchase price to the tangible and identifiable intangible assets and liabilities assumed based on their estimated fair values. Purchased identifiable intangible assets include subscriber relationships, trade names, developed technology and IPR&D. The methodologies used to determine the fair value assigned to subscriber relationships is typically based on the excess earnings method that considers the return received from the intangible asset and includes certain expenses and also considers an attrition rate based on the Company’s internal subscriber analysis and an estimate of the average life of the subscribers. The fair value assigned to trade names is typically based on the income approach using a relief from royalty methodology that assumes that the fair value of a trade name can be measured by estimating the cost of licensing and paying a royalty fee for the trade name that the owner of the trade name avoids. The fair value assigned to developed technology typically uses the cost approach. The fair value assigned to IPR&D is based on the cost approach. If applicable, the Company estimates the fair value of contingent consideration payments in determining the purchase price. The contingent consideration is then adjusted to fair value in subsequent periods as an increase or decrease in current earnings in general and administrative expense in the consolidated statements of operations.
	Acquisitions—2011
	During the Predecessor period in 2011, the Company made a payment of $5.4 million related to contingent consideration and transaction costs and recorded a $0.4 million adjustment to fair value in the Company’s consolidated statements of operations for acquisitions made prior to 2010.
	Business Combinations—Dotster, Inc.
	On July 22, 2011, EIG acquired Dotster, Inc. (“Dotster”), a privately-held leading provider of shared web hosting and domain name management. Under the terms of the stock purchase agreement, the Company acquired all of the outstanding common stock of Dotster for an aggregate purchase price of $62.9 million in cash, including $5.3 million subject to escrow of which the Company received back an aggregate amount of $2.5 million. The remaining cash balance in escrow of $2.8 million was paid to the seller during 2013. Transaction costs of $0.3 million were recorded as a general and administrative expense in the related consolidated statements of operations for the Predecessor period.
	In connection with the acquisition of Dotster, EIG Investors issued 38,000 shares of series D preferred stock to investors in exchange for $38.0 million cash (see Note 9), and funded the remainder from existing cash resources and use of its revolving loan facility.
	The Company accounted for the acquisition as a business combination using the purchase method of accounting. The Company allocated the purchase price to the tangible and identifiable intangible assets and liabilities assumed based on their estimated fair values. The excess of the purchase price over the aggregate fair value of identifiable assets and assumed liabilities was recorded as goodwill. The acquisition has carryover tax deductible goodwill.
	Sponsor Acquisition
	On December 22, 2011, the Company was acquired by Holdings by acquiring all of the outstanding preferred and common stock of EIG Investors and its subsidiary companies. In connection with the Sponsor Acquisition, Holdings issued 100% of its membership interests (which converted into 1,000 shares of the Company’s common stock as a result of the reorganization of Holdings into a Delaware partnership and subsequent conversion into a Delaware C-corporation, (see Note 1)) to WP Expedition Midco LLC (converted to WP Expedition Midco L.P.) (“Midco”) a wholly owned subsidiary of WP Expedition Topco LLC (converted to WP Expedition Topco L.P.) (“Topco”) and 150,000 shares of its series E preferred stock to an entity owned by Accel-KKR, the prior private equity sponsor, as a component of the purchase price of the Sponsor Acquisition. In addition, EIG Investors entered into a $350.0 million term loan facility (the “December 2011 Term Loan”), the proceeds of which were used to repay existing indebtedness (see Note 8).
	The aggregate purchase price of $683.1 million, excluding $305.0 million of assumed indebtedness, consisted of $472.2 million in cash, issuance of 150,000 shares of series E preferred stock for $150.0 million, and a deemed capital contribution of $55.1 million from the ultimate parent company, Holdings, related to equity issued in Topco in lieu of cash proceeds to roll-over stockholders. In addition, the purchase consideration included deferred consideration of $5.7 million which was paid during 2012. Direct transaction expenses of $3.6 million were recorded as general and administrative expense in the related Successor period.
	The Company accounted for the Sponsor Acquisition as a purchase using the purchase method of accounting for business combinations in accordance with ASC 805. The purchase price was pushed down to the Company’s consolidated financial statements in accordance with SEC Staff Accounting Bulletin Topic 5J (“New Basis of Accounting Required in Certain Circumstances”) as the majority stockholders of the ultimate parent company acquired approximately 89% of the class A units of the voting securities of Topco. When using the push-down basis of accounting, the acquired company’s separate financial statements reflect the new accounting basis recorded by the acquiring company. The Company’s consolidated financial statements reflect the equity at the Holdings level and accordingly do not reflect any non-controlling interest held by stockholders in Topco. The Company allocated the purchase price to the tangible and identifiable intangible assets and liabilities assumed based on their estimated fair values. The excess of the purchase price over the aggregate fair value of identifiable assets and assumed liabilities was recorded as goodwill.
	The goodwill recorded as part of the Sponsor Acquisition is not deductible for U.S. federal income tax purposes.
	The acquired intangible assets, all of which are being utilized, are composed of $167.0 million in developed technology, $177.1 million in subscriber relationships and $44.3 million in trade names. Developed technology has an estimated useful life of ten years. Subscriber relationships and trade names have estimated useful lives of ten years and 15 years, respectively.
	Acquisitions—2012
	Business Combination—HostGator.com LLC
	On July 13, 2012, the Company acquired all of the membership units of HostGator, a privately-held leading provider of shared, VPS and dedicated web hosting services to small and medium sized businesses. The aggregate purchase price was $299.8 million, of which $227.3 million was paid in cash at the closing. Transaction expenses of $2.4 million were recorded as general and administrative expense. Under the terms of the purchase agreement (the “HostGator Agreement”), the purchase consideration was subject to a working capital adjustment, which resulted in an additional $0.8 million that was paid by the Company in January 2013. The Company has filed a 338(h)(10) election which allows for goodwill and intangible assets recorded as part of the acquisition to be deductible for U.S. federal income tax purposes. Under the terms of the HostGator agreement, the Company agreed to compensate the seller for incremental taxes arising from the filing of the election and recorded $0.8 million as due and payable by the Company at December 31, 2012, which resulted in a corresponding increase to the purchase price. This amount was paid in April 2013.
	The Company was also obligated to pay additional purchase consideration of $73.6 million in two installments of $49.4 million and $24.2 million, due 12 and 18 months from the acquisition date, respectively. Of this additional purchase consideration, the net present value of future cash consideration payments consisting of $47.9 million and $23.0 million, were included in the aggregate purchase price while the remaining $2.7 million was accreted at the rate of $1.2 million and $1.6 million, in each of the years ended December 31, 2012 and 2013, respectively, in interest expense. During 2013, the Company paid $49.4 million of deferred consideration resulting in a deferred amount payable of $24.2 million at December 31, 2013. This was fully paid in January 2014. Under the terms of the HostGator Agreement, the Company was also obligated to pay amounts deemed to be future compensation for certain employees in the amounts of $2.9 million and $2.0 million, also due 12 and 18 months from the acquisition date, respectively. These future compensation amounts were accrued to compensation expense over the service term and the unpaid amounts were recorded as other liability in the Company’s consolidated balance sheet as of December 31, 2012 and 2013. As of December 31, 2013, the Company has paid $2.9 million as compensation expense for certain employees.
	The Company accounted for the HostGator acquisition as a business combination using the purchase method of accounting. The Company allocated the preliminary purchase price to the tangible and identifiable intangible assets and liabilities assumed based on their estimated fair values. Developed technology has an estimated useful life of ten years and subscriber relationships and trade names have estimated useful lives of 20 years and ten years, respectively. The excess of the purchase price over the fair value of the identifiable assets and assumed liabilities was recorded as goodwill.
	The following table summarizes the preliminary purchase price allocation on the acquisition date and the estimated fair values of goodwill, intangible assets and tangible assets acquired and liabilities assumed (in thousands):
	Cash	$	593
	Accounts receivable		512
	Prepaid expenses and other current assets		2,762
	Property and equipment		315
	Intangible assets		116,060
	Investment		10,000
	Deferred tax asset		2,067
	Goodwill		189,296
	Total assets acquired		321,605
	Accounts payable		147
	Accrued expenses		5,102
	Deferred revenue		16,558
	Total liabilities assumed		21,807
	Net assets acquired	$	299,798
	The acquired intangible assets, all of which are being utilized, are comprised of $1.6 million in developed technology, $16.9 million in trade names and $97.6 million in subscriber relationships.
	Homestead Technologies, Inc.
	On September 17, 2012, the Company acquired the assets and assumed certain liabilities in connection with the acquisition of Homestead Technologies, Inc. (“Homestead”). Homestead offers website and online store design software which enables individual and business subscribers to build their websites and online stores. The aggregate purchase price was $61.5 million in cash, consisting of $60.4 million paid at the closing and a working capital adjustment of $1.1 million paid in December 2012. Transaction expenses of $1.5 million were recorded as a general and administrative expense.
	The Company accounted for the acquisition as a business combination using the purchase method of accounting. The Company allocated the purchase price to the tangible and identifiable intangible assets and liabilities assumed based on their estimated fair values. Developed technology has an estimated useful life of five years and subscriber relationships and trade names both have estimated useful lives of ten years. IPR&D has been recorded at fair value and is recognized as an indefinite-lived intangible asset until completion or abandonment of the associated research and development efforts. The excess of the purchase price over the fair value of the identifiable assets and assumed liabilities was recorded as goodwill.
	The following table summarizes the Homestead purchase price allocation on the acquisition date and the estimated fair values of goodwill, intangible assets and tangible assets acquired and liabilities assumed (in thousands):
	Accounts receivable	$	1,575
	Prepaid expenses and other assets		399
	Property and equipment		1,287
	Intangible assets		58,240
	Goodwill		22,063
	Total assets acquired		83,564
	Accounts payable		2,178
	Reserves for refunds and chargebacks		30
	Deferred tax liability		17,558
	Deferred revenue		2,337
	Total liabilities assumed		22,103
	Net assets acquired	$	61,461
	The acquired intangible assets, all of which are being utilized, are composed of $7.7 million in developed technology, $7.6 million in trade names, $41.6 million in subscriber relationships and $1.3 million for IPR&D. Goodwill related to the acquisition is not tax deductible.
	Other Acquisitions—2012
	During the year ended December 31, 2012, the Company made three smaller acquisitions. The aggregate purchase price of $13.5 million was allocated primarily to long-lived intangible assets of $7.8 million, goodwill of $6.5 million, deferred tax asset of $0.5 million, offset by deferred revenue of $1.3 million.
	For the period ended December 31, 2012, $75.6 million of revenue from the Company’s 2012 acquisitions was included in the Company’s consolidated statements of operations for the year ended December 31, 2012.
	The Company has omitted earnings information related to its acquisitions as it does not separately track earnings from each of its acquisitions that would provide meaningful disclosure. The Company considers it to be impracticable to compile such information on an acquisition-by-acquisition basis since activities of integration and use of shared costs and services across the Company’s business are not allocated to each acquisition and are not managed to provide separate identifiable earnings from the dates of acquisition.
	Under the terms of the asset acquisition purchase agreements, installment payments are payable upon the resolution of certain contingencies. An aggregate amount of $1.8 million of deferred and earn-out payments were paid during 2013. The balance of earn-out payments as of December 31, 2013 was $1.7 million after recording a net increase in deferred and earn-out payments of $0.1 million. Goodwill in the amount of $0.1 million recorded as part of one of the other acquisitions is deductible for U.S. federal income tax purposes.
	Acquisitions—2013
	During the year ended December 31, 2013, the Company made three other small acquisitions. Under the terms of the purchase agreements, the Company acquired all of the outstanding shares of each entity for an aggregate purchase price of $5.4 million in cash plus deferred consideration payable of $5.5 million. The Company had estimated the fair value of the contingent deferred consideration of one acquisition to be $2.7 million and had recorded the liability in the Company’s consolidated balance sheet as of September 30, 2013. The Company’s initial public offering in October 2013 resulted in the Company determining that the contingent consideration was payable in an amount of $2.0 million and made this full and final payment during the three months ended December 31, 2013. The balance of the estimated earn-out payment of $0.7 million was written-down and recorded as an increase in current earnings in general and administrative expense in the consolidated statements of operations. The deferred consideration of $2.8 million for the other acquisition is payable after four years and is recorded as a long term liability at December 31, 2013. The purchase price of these acquisitions was preliminarily allocated to long-lived intangible assets of $2.0 million and goodwill of $8.9 million.
	During the second quarter of 2013, the Company made an initial investment of $8.8 million to acquire a 17.5% interest in a privately-held company based in the United Kingdom. The agreement provided for the acquisition of additional equity interests from the shareholders of the non-controlling interest (“NCI”). In particular, it provided for a call option allowing the Company to acquire an additional equity interest during pre-specified call periods and a put option (only if the call option is exercised), for the then non-controlling interest (“NCI”) shareholders to put the remaining equity interest to the Company within pre-specified put periods, provided that the call option had been exercised during the appropriate call periods. In the fourth quarter of 2013, the Company exercised the call option in full for an additional $22.2 million in cash to acquire a controlling interest in the privately held Company.
	Under the put option, the NCI shareholders can put their shares to the Company at a price calculated at the time of the exercise of the put option, subject to a minimum of $24.0 million. As the NCI is subject to a put option that is outside the control of the Company, it is deemed redeemable non-controlling interest and not recorded in permanent equity, and is being presented as mezzanine redeemable non-controlling interest on the consolidated balance sheet, and is subject to the SEC guidance under ASC 480-10-S99, Accounting for Redeemable Equity Securities.
	Upon the exercise of the call option, the Company estimated the fair value of the assets and liabilities in accordance with the guidance for business combinations, and estimated that the value of the redeemable non-controlling interest on December 11, 2013 was $20.6 million. The difference between the initial fair value of the redeemable non-controlling interest and the value expected to be paid upon exercise of the put option is being accreted over the period commencing December 11, 2013, and up to the end of the first put option period, which commences on the eighteen month anniversary of the acquisition date. Adjustments to the carrying amount of the redeemable non-controlling interest are charged to additional paid-in capital.
	Non-controlling interest arising from the application of the consolidation rules is classified within the total stockholders’ equity with any adjustments charged to net loss attributable to non-controlling interest in a consolidated subsidiary in the consolidated statement of operations.
The estimated purchase price of $31.0 million and minority interest of $20.6 million was allocated on a preliminary basis primarily to goodwill of $37.7 million, long-lived intangible assets of $28.5 million and property and equipment of $0.3 million, which were offset by $9.3 million of deferred revenue, other liabilities of $2.6 million, deferred tax liabilities of $1.9 million and negative net working capital of $1.1 million. Goodwill allocated to the acquisition is not tax deductible.
For the period ended December 31, 2013, $7.8 million of revenue from the Company’s 2013 acquisitions was included in the Company’s consolidated statements of operations for the year ended December 31, 2013.
The Company has omitted earnings information related to its acquisitions as it does not separately track earnings from each of its acquisitions that would provide meaningful disclosure. The Company considers it to be impracticable to compile such information on an acquisition-by-acquisition basis since activities of integration and use of shared costs and services across the Company’s business are not allocated to each acquisition and are not managed to provide separate identifiable earnings from the dates of acquisition.
Pro forma Disclosure
The following table includes selected unaudited pro forma financial information from the HostGator and Homestead business combinations in 2012, as if the acquisition of these entities had occurred on January 1, 2012. The Company has omitted pro forma disclosures related to its other less significant acquisitions completed during 2012 and 2013 as the pro forma effect of including the results of these acquisitions since the beginning of 2012 and 2013 would not be materially different than the actual results reported.
The pro forma results include amounts derived from the historical financial results of the acquired businesses for the period presented and are not necessarily indicative of the results that would have occurred had the acquisitions been consummated on January 1, 2012. There was no pro forma impact on the results of operations for 2013, as the HostGator and Homestead acquisitions closed prior to January 1, 2013.
	Pro forma
	For the Year
	Ended
	December 31,
	2012
Revenues	$	415,209
Net loss attributable to common stockholders	$	(125,021	)
Net loss per share attributable to common stockholders basic and diluted	$	(1.29	)

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	4. Fair Value Measurements
	The following valuation hierarchy is used for disclosure of the inputs to valuation used to measure fair value. This hierarchy prioritizes the inputs into three broad levels as follows:
		•		Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities.
		•		Level 2 inputs are quoted prices for similar assets or liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument.
		•		Level 3 inputs are unobservable inputs based on the Company’s own assumptions used to measure assets and liabilities at fair value.
	A financial asset or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement.
	As of December 31, 2012, the Company’s only financial asset or liability required to be measured on a recurring basis is the accrued earn-out consideration payable in connection with the 2012 acquisition of Mojoness Inc. (“Mojo”), through which the Company acquired technology that creates new opportunities for the Company to engage with its subscribers through an application store.
	As of December 31, 2013, the Company’s only financial assets or liabilities required to be measured on a recurring basis is the accrued earn-out consideration payable in connection with the acquisitions of Mojo. The Company has classified its liabilities for contingent earn-out consideration related to the acquisitions of Mojo within Level 3 of the fair value hierarchy because the fair value is determined using significant unobservable inputs, which included probability weighted cash flows. The Company recorded a $0.3 million change in fair value of the earn-out consideration related to Mojo as of December 31, 2013 in the Company’s general and administrative expense in the consolidated statement of operations and comprehensive income. The earn-out consideration in the table below is included in total deferred consideration in the Company’s consolidated balance sheets.
	Basis of Fair Value Measurements
			Balance		Quoted Prices		Significant		Significant
					in Active Markets		Other		Unobservable
					for Identical Items		Observable		Inputs
					(Level 1)		Inputs		(Level 3)
							(Level 2)
			(in thousands)
	Balance at December 31, 2012:
	Financial liabilities:
	Contingent earn-out consideration		$	1,383		—		—	$	1,383
	Total financial liabilities		$	1,383		—		—	$	1,383
	Balance at December 31, 2013:
	Financial liabilities:
	Contingent earn-out consideration		$	1,655		—		—	$	1,655
	Total financial liabilities		$	1,655		—		—	$	1,655

Property_and_Equipment

Property and Equipment	12 Months Ended
	Dec. 31, 2013
Property Plant And Equipment [Abstract]	'
Property and Equipment	'
	5. Property and Equipment
	Components of property and equipment consisted of the following (in thousands):
		Year Ended
		December 31,
		2012			2013
	Software	$	937		$	4,503
	Computers and office equipment		33,314			59,201
	Furniture and fixtures		1,570			3,715
	Leasehold improvements		4,692			6,033
	Construction in process		748			1,392
	Property and equipment—at cost		41,261			74,884
	Less accumulated depreciation		(6,657	)		(25,129	)
	Property and equipment—net	$	34,604		$	49,715
	Depreciation expense related to property and equipment for the Predecessor and Successor periods in 2011, and the years ended December 31, 2012 and 2013, was $3.5 million, $0.1 million, $6.9 million and $18.6 million, respectively.

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]	'
Goodwill and Other Intangible Assets	'
	6. Goodwill and Other Intangible Assets
	The following table summarizes the changes in the Company’s goodwill balances as of December 31, 2012 and 2013 (in thousands):
	Goodwill balance at January 1, 2012	$	713,896
	Goodwill related to 2012 acquisitions		217,817
	Purchase price adjustments for acquisition of the Company		5,033
	Goodwill balance at December 31, 2012	$	936,746
	Goodwill related to 2012 acquisition		844
	Goodwill related to 2013 acquisition		46,617
	Goodwill balance at December 31, 2013	$	984,207
	The Company has not recorded any impairment charges related to goodwill. During 2012, the Company identified certain intangibles and other items recorded with the Sponsor Acquisition with different book and tax basis. Accordingly, the Company recorded net deferred tax liabilities with a corresponding increase to goodwill.
	In accordance with ASC 350, the Company reviews goodwill and other indefinite-lived intangible assets for indicators of impairment on an annual basis and between tests if an event occurs or circumstances change that would more likely than not reduce the fair value of goodwill below its carrying amount. In the three months ended December 31, 2013, the Company completed its annual impairment test of goodwill and other indefinite-lived intangible assets and determined that there were no indicators of impairment.
	At December 31, 2012, other intangible assets consisted of the following (dollars in thousands):
		Gross		Accumulated		Net Carrying		Weighted
		Carrying		Amortization		Amount		Average
		Amount						Useful Life
	Other intangible assets:
	Developed technology	$	176,360	$	17,490	$	158,870		10 years
	Subscriber relationships		321,469		62,852		258,617		13 years
	Trade-names		68,990		9,407		59,583		13 years
	Intellectual property		2,280		—		2,280		5 years
	IPR&D		1,340		—		1,340		—
	Total December 31, 2012	$	570,439	$	89,749	$	480,690
	At December 31, 2013, other intangible assets consisted of the following (dollars in thousands):
		Gross		Accumulated		Net Carrying		Weighted
		Carrying		Amortization		Amount		Average
		Amount						Useful Life
	Other Intangible assets:
	Developed technology	$	183,201	$	36,195	$	147,006		10 years
	Subscriber relationships		346,506		138,297		208,209		13 years
	Trade-names		69,202		20,633		48,569		13 years
	Intellectual property		2,820		464		2,356		8 years
	IPR&D		—		—		—		—
	Total December 31, 2013	$	601,729	$	195,589	$	406,140
	The estimated useful lives of the individual categories of other intangible assets are based on the nature of the applicable intangible asset and the expected future cash flows to be derived from the intangible asset. Amortization of intangible assets with finite lives is recognized over the period of time the assets are expected to contribute to future cash flows. The Company amortizes finite-lived intangible assets over the period in which the economic benefits are expected to be realized based upon their estimated projected cash flows. During the year ended December 31, 2013 the Company completed its development process of in-process research and development it had acquired as of December 31, 2012 and the capitalized amount was reclassified to developed technology as of December 31, 2013 and is being amortized over the estimated useful life.
	The Company’s amortization expense is included in cost of revenue in the aggregate amounts of $50.4 million, $1.7 million, $88.1 million and $105.8 million, for the Predecessor and Successor periods in 2011 and the years ended December 31, 2012 and 2013, respectively.
	At December 31, 2013, the expected future amortization of the other intangible assets, was approximately as follows (dollars in thousands):
	Year Ending December 31,	Amount
	2014	$	92,000
	2015		71,000
	2016		57,000
	2017		46,000
	2018		37,000
	Thereafter		103,000
	Total	$	406,000

Investments

Investments	12 Months Ended
	Dec. 31, 2013
Investments Schedule [Abstract]	'
Investments	'
	7. Investments
	In connection with the acquisition of HostGator, the Company assumed a 50% interest in another privately-held company, with a fair value of $10.0 million. On October 31, 2013, the Company sold 10% of its ownership interest in this privately-held Company and recorded a $1.5 million note receivable from the buyer and decreased its investment by $1.5 million. The Company evaluated its remaining 40% ownership interest in this privately-held company and recognized a $2.6 million impairment on the remaining investment, which is recorded in equity loss of unconsolidated entities, net of tax, in the Company’s consolidated statement of operations and comprehensive loss.
	On June 6, 2013, the Company made an initial investment of $8.8 million to acquire a 17.5% interest in a company based in the United Kingdom, which provides online desktop backup services. The agreement also provided for the acquisition of additional equity interests which the Company exercised on December 11, 2013, (for more detail see Note 3 to the consolidated financial statements).
	Investments in which the Company’s interest is less than 20% and which are not classified as available-for-sale securities are carried at the lower of cost or net realizable value unless it is determined that the Company exercises significant influence over the investee company, in which case the equity method of accounting is used. For those investments in which the Company’s voting interest is between 20% and 50%, the equity method of accounting is used. Under this method, the investment balance, originally recorded at cost, is adjusted to recognize the Company’s share of net earnings or losses of the investee company, as they occur, limited to the extent of the Company’s investment in, advances to and commitments for the investee. These adjustments are reflected in equity loss (income) of unconsolidated entities, net of tax. The Company recognized net income of $0.5 million for the year ended December 31, 2013 related to its investments.
	As of December 31, 2012 and December 31, 2013, the Company’s carrying value of investments in privately-held companies, which does not include the Company’s controlling interest was $10.2 million and $6.5 million, respectively.
	From time to time, the Company may make new and follow-on investments and may receive distributions from investee companies. As of December 31, 2013, the Company was not obligated to fund any follow-on investments in these investee companies.
	As of December 31, 2012 and December 31, 2013, the Company did not have an equity method investment in which the Company’s proportionate share exceeded 10% of the Company’s consolidated assets or income from continuing operations.

Notes_Payable

Notes Payable	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Notes Payable	'
	8. Notes Payable
	During 2012 and 2013, in connection with a number of transactions, EIG Investors entered into a series of amendments to its December 2011 Term Loan as described below. At December 31, 2012, notes payable consisted of first and second lien term loan facilities with an aggregate principal amount outstanding of $1,115.0, million which bore interest at LIBOR-based rates of 6.25% and 10.25%, respectively, and a bank revolver loan of $15.0 million, which bore interest at a LIBOR-based rate of 7.75%. At December 31, 2013, notes payable consisted of a first lien term loan facility with a principal amount outstanding of $1,047.4 million, which bore interest at a LIBOR-based rate of 5.00%.
	December 22, 2011
	On December 22, 2011, the Company entered into the December 2011 Term Loan for an initial total commitment of $385.0 million, consisting of a term loan in the original principal amount of $350.0 million and a revolving credit commitment (“Revolver”) in an aggregate principal not to exceed $35.0 million. At that date the Company had an outstanding term loan of $305.0 million which was repaid in full.
	The loans automatically bore interest at the bank’s reference rate unless the Company provided notice to opt for LIBOR rate loans. The interest rate for a reference rate loan was 5.25% per annum plus the greater of the Prime Rate, the Federal Funds Effective Rate plus half of one percent, an Adjusted LIBOR rate or 2.5%. The interest rate for a LIBOR loan was 6.25% plus the greater of the LIBOR rate or 1.5%.
	The closing fees plus certain other finance costs related to the issuance of the term loan (“deferred financing fees”) totaling $21.4 million were deferred and were amortized over the 6 year term of the term loan. Amortization of $0.1 million was included in interest expense in the consolidated statements of operations for the successor period.
	January 2012 to November 8, 2012
	On April 20, 2012, the Company entered into a new six-year term loan (the “April 2012 Term Loan”) for $535.0 million and an increase in the revolving credit commitment (“Revolver”) by $20.0 million to $55.0 million. The previously outstanding term loan balance of $349.1 million was repaid in full. The Company concluded that the April 2012 Term Loan was a debt modification in accordance with ASC 470-50, Debt—Modifications and Extinguishments(“ASC 470-50”), and as such all third-party costs incurred to modify the debt of $0.6 million were expensed. Additional financing related costs of $9.2 million were incurred and were recorded as deferred financing costs with an amortization period of six years.
	On July 13, 2012, the Company entered into an amended and restated financing agreement (the “July Financing Amendment”) for an additional $135.0 million of term loans, a second lien credit agreement (the “Second Lien Agreement”) for $140.0 million and an increase in the Revolver by $20.0 million to $75.0 million. The Company concluded that the July Financing Amendment was a debt modification in accordance with ASC 470-50, and as such all third-party costs incurred to modify the debt of $0.7 million were expensed. Additional financing costs of $12.8 million were incurred and were recorded as deferred financing costs with an amortization period of six years.
	The loans automatically bore interest at the bank’s reference rate unless the Company provided notice to opt for LIBOR-based interest rate loans. The interest rate for a reference rate loan was 5.25% per annum plus the greater of the prime rate, the federal funds effective rate plus 0.5%, an adjusted LIBOR rate or 2.50%. The interest rate for a LIBOR-based loan was 6.25% plus the greater of the LIBOR rate or 1.50%. The interest on reference rate loans were paid at the end of each quarter and the interest on LIBOR based loans on the maturity date of each LIBOR-based loan. A non-refundable fee, equal to 0.50% of the daily unused principal amount of the Revolver, was payable in arrears on the last day of each fiscal quarter. The interest rate under the Second Lien Agreement for a LIBOR-based loan was 9.50% plus the greater of the LIBOR rate or 1.50%.
	Debt Refinancing—November 9, 2012
	On November 9, 2012, the Company entered into the November Financing Amendment (“November 2012 Financing Amendment”) for a new First Lien term loan in the original principal amount of $800.0 million (“November 2012 First Lien”), a revolver in aggregate principal amount not to exceed $85.0 million (“November 2012 Revolver”) and a new Second Lien credit agreement (“November 2012 Second Lien”), for an original principal amount of $315.0 million.
	The Company concluded that the November 2012 Financing Amendment was a debt extinguishment in accordance with ASC 470-50, which requires the term loans be recorded at fair value. The November 2012 Financing Amendment modified the July Financing Amendment. At the time of the November 2012 Financing Amendment, the April 2012 Term Loan, as modified by the July Financing Amendment, and the Second Lien facility had balances of $668.3 million and $140.0 million, respectively. The term loans have been recorded at face value which equaled fair value, and as such all expenses paid to and on behalf of the lender were expensed. Third-party financing related costs of $1.5 million were incurred and recorded as deferred financing costs with an amortization period based on the remaining terms of the loans.
	Under the November 2012 First Lien and November 2012 Second Lien, the term loans would have mature on November 9, 2019 and May 9, 2020, respectively, and the November 2012 Revolver matures on December 22, 2016. Commencing on March 28, 2013, the November 2012 First Lien had a mandatory repayment of $2.0 million at the end of each quarter.
	The loans automatically bore interest at the bank’s reference rate unless the Company gave notice to opt for LIBOR-based interest rate loans. For the November 2012 First Lien, the interest rate for a reference rate loan was reduced to 4.00% per annum plus the greater of the prime rate, the federal funds effective rate plus 0.50%, an Adjusted LIBOR rate or 2.25%. The interest rate for a LIBOR based loan was 5.00% plus the greater of the LIBOR rate or 1.25%. For the November 2012 Second Lien, the interest rate for a LIBOR-based loan was 9.00% plus the greater of the LIBOR rate or 1.25%. The interest on reference rate loans was payable at the end of a quarter and the interest on the LIBOR-based interest rate loans on the maturity date of each LIBOR loan. The interest rate for an Alternate Base Rate (“ABR”) Revolver loan is 5.25% per annum plus the greater of the prime rate, the federal funds effective rate plus 0.50%, an adjusted LIBOR rate or 2.25%. The interest rate for a LIBOR based Revolver loan is 6.25% per annum plus the greater of the LIBOR rate or 1.50%. The November 2012 First Lien also had a non-refundable fee, equal to 0.50% of the daily unused principal amount of the November 2012 Revolver payable in arrears on the last day of each fiscal quarter, commencing on December 31, 2012.
	During the year ended December 31, 2012, the Company made mandatory repayments on term loan facilities in an aggregate amount of $2.7 million. For the year ended December 31, 2012, amortization of deferred financing costs of $4.6 million, respectively, was included in interest expense in the consolidated statements of operations.
	Debt Refinancing—August 9, 2013
	On August 9, 2013, the Company entered into the Incremental Amendment to the Second Amended and Restated Credit Agreement (the “August 2013 First Lien”) and borrowed an additional $90.0 million of incremental term loans. In connection with the August 2013 First Lien, the Company repaid the $37.0 million then outstanding under the November 2012 Revolver. The Company concluded that the August 2013 First Lien was a debt modification in accordance with ASC 470-50, and as such all third-party costs incurred to modify the debt were expensed.
	The August 2013 First Lien modified the November 2012 First Lien. At the time of the August 2013 First Lien, the November 2012 First Lien had a balance of $796.0 million. Additional financing costs of $1.3 million were incurred, which were recorded as deferred financing costs with an amortization period based on the remaining term of the loan.
	Amortization of $0.3 million was included in interest expense for the year ended December 31, 2013, related to deferred financing costs from the November 2012 Financing Amendment and the August 2013 First Lien.
	In connection with the August 2013 First Lien, the interest rates for the term loan and the November 2012 Revolver remained the same as under the November 2012 First Lien.
	Debt Refinancing—November 25, 2013
	In November 2013, following its initial public offering, the Company repaid in full its November 2012 Second Lien of $315.0 million and increased the First Lien term loan facility by $166.2 million to $1,050.0 million, thereby reducing its overall indebtedness by $148.8 million. The Company also increased the November 2012 Revolver by $40.0 million to $125.0 million, all of which was available for borrowing.
	The Company concluded that the November 2013 Financing Agreement was a debt extinguishment in accordance with ASC 470-50, which requires the term loans be recorded at fair value. The November 2013 Financing Agreement modified the August 2013 First Lien. At the time of the November 2013 Financing Agreement, the August 2013 First Lien, and the Second Lien facility had balances of $883.8 million and $315.0 million, respectively. The term loan has been recorded at face value which equaled fair value, and as such, all expenses paid to and on behalf of the lender were expensed. Third-party financing related costs of $0.4 million were incurred and recorded as deferred financing costs with an amortization period based on the remaining term of the loan.
	Effective November 25, 2013, the interest rate for a LIBOR based interest loan has been reduced to 4.00% plus the greater of the LIBOR rate or 1.00% from 5.00% plus the greater of the LIBOR rate or 1.25%. Interest is payable at the end of each quarter from the date of the refinancing, except for interest accrued on the mandatory repayment, which is due at the end of each calendar quarter.
	Commencing on December 31, 2013, the new first lien facility has a mandatory repayment of approximately $2.6 million at the end of each quarter. There was no change to the maturity dates of the First Lien facility and Revolver, which mature on November 9, 2019 and December 22, 2016, respectively.
	At December 31, 2012 and 2013, notes payable consisted of the following (dollars in thousands):
		December 31,			December 31,
		2012			2013
	LIBOR First Lien term loan	$	800,000		$	1,047,375
	LIBOR Second Lien term loan		315,000			—
	LIBOR Revolver loan		15,000			—
		$	1,130,000		$	1,047,375
	The maturity of the notes payable at December 31, 2013 is as follows (dollars in thousands):
		Amount
	2014	$	10,500
	2015		10,500
	2016		10,500
	2017		10,500
	2018		10,500
	2019		994,875
	Total	$	1,047,375
	Interest
	The Company recorded $24.4 million, $0.8 million, $53.0 million and $85.7 million in interest expense and service fees for the Predecessor and Successor periods in 2011 and the years ended December 31, 2012 and 2013, respectively. For the years ended December 31, 2012 and 2013, interest expense included $1.2 million and $1.7 million, respectively, related to the accretion of present value for the deferred consideration and deferred bonus payments related to the HostGator acquisition.
	As of December 31, 2012, the interest rates on the LIBOR-based First Lien, Second Lien and Revolver loans were 6.25%, 10.25% and 7.75%, respectively. As of December 31, 2013, the interest rate on the LIBOR-based First Lien loan was 5.00%.
	The following table provides a summary of interest rates and interest expense for the Predecessor and Successor Periods in 2011, and the years ended December 31, 2012 and 2013, (dollars in thousands):
		Period from January 1,			Period from December 21,			Year Ended			Year Ended
		2011 through			2011 through December 31,			December 31, 2012			December 31,
		December 21,			2011						2013
		2011
	Interest rate—LIBOR		8.00%-11.25	%		7.75	%		6.25%-11.00	%		5.00%-10.25	%
	Interest rate—reference		8.75% to 12.25	%		8.5	%		7.75% to 11.00	%		6.25%-10.25	%
	Non-refundable fee—unused facility		0.5	%		0.5	%		0.5	%		0.5	%
	Interest expense and service fees	$	24,435		$	757		$	52,995		$	85,655
	Amortization of deferred financing fees	$	23,781		$	98		$	4,466		$	260
	Amortization of net present value of deferred consideration	$	—		$	—		$	1,093		$	1,701
	Loss on extinguishment of term loans	$	—		$	—		$	67,611		$	10,833
	The November 2013 Financing Amendment contained certain restrictive financial covenants, including a net leverage ratio, restrictions on the payment of dividends, as well as reporting requirements. Additionally, the November 2013 Financing Amendment contained certain negative covenants and defined certain events of default, including a change of control and non-payment of principal and interest, among others, which could result in amounts becoming payable prior to their maturity dates. The Company was in compliance with all covenants at December 31, 2012 and 2013.
	Substantially all of the Company’s assets are pledged as collateral for the outstanding loan commitments with the exception of certain excluded equity interests and the exception of certain restricted cash balances and bank deposits permitted under the terms of the Financing Agreement.

Stockholders_Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Stockholders' Equity	'
	9. Stockholders’ Equity
	Preferred Stock
	The Company has 5,000,000 shares of authorized preferred stock, par value $0.0001. There are no preferred shares issued or outstanding as of December 31, 2013.
	Common Stock
	The Company has 500,000,000 shares of authorized common stock, par value $0.0001. On December 22, 2011, in connection with the Sponsor Acquisition, 105,187,363 shares of common stock were issued for an aggregate amount of $507.4 million, net of issuance costs, consisting of cash of $452.3 million and a deemed capital contribution of $55.1 million.
	Voting Rights
	All holders of common stock are entitled to one vote per share.
	Initial Public Offering—October 2013
	As disclosed in Note 1, the Company completed its initial public offering in October 2013. The following table provides a summary of the Company’s outstanding shares of common stock as of December 31, 2013:
		Outstanding
		Shares
	Common shares issued—prior to initial public offering		103,695,318
	Common shares issued at initial public offering		21,049,004
	Restricted stock awards granted as vested at initial public offering		22,222
	Shares of common stock outstanding at December 31, 2013		124,766,544
	Restricted shares are not considered outstanding until they are vested.
	Successor period—(December 22, 2011—April 20, 2012)
	Series E Preferred Stock
	The Company had 150,000 authorized shares of series E preferred stock, par value $0.01 (“Series E”).
	Dividends
	Holders of the Series E were entitled to receive dividends, when, as and if dividends were declared by the board of the Company and would have accumulated, whether or not dividends were declared. The Series E were issued on December 22, 2011 and accrued a cumulative dividend at the rate of 12% per annum, based on a 360-day year consisting of twelve 30-day months, compounded on the last day of each calendar quarter beginning December 31, 2012.
	Redemption
	The Series E was redeemable in whole or in part by the Company at a price equal to the Liquidation Preference amount of $1,000 per share, plus accrued dividend amounts at the date of redemption. On April 20, 2012, in connection with the financing from the April 2012 Term Loan, the Company redeemed all of the outstanding shares of Series E for $150.0 million plus accrued dividends of $6.0 million.
	Predecessor Period (January 1, 2011—December 21, 2011)
	On January 1, 2011, EIG Investors had authorized stock of 275,000 shares of preferred stock (par value $0.01) consisting of 75,000 shares of series A preferred stock (“Series A”), 75,000 shares of series B preferred stock (“Series B”), 75,000 shares of series C preferred stock (“Series C”), 50,000 undesignated and 2,500 shares of common stock, par value $0.01. In July 2011, an amendment to the Certificate of Incorporation authorized 75,000 additional shares of series D preferred stock (“Series D”). In connection with the acquisition of Dotster (see Note 3), 38,000 shares of Series D were issued to investors in exchange for cash.
	December 21, 2011 represented the last day prior to the Sponsor Acquisition.
	Dividends
	The Series A accrued dividends at the rate of 25% per annum, compounded on the last day of each calendar quarter. The Series C and Series D accrued dividends at the rate of 25% per annum, compounded on the last day of each calendar year. The Series B was not entitled to any dividend.
	Redemption
	In October 2011, the Company fully redeemed the Series C and the Series D plus the accrued dividends for a total of $65.8 million. At any time, the majority holders of the Prior Parent could require the holders of the Series A to exchange their shares for the same number of class A units in the Prior Parent. Accordingly, on December 13, 2011, the outstanding balance of 5,998,500 shares of Series A was exchanged.
	In 2009, the board of the Prior Parent resolved that upon a sale of the Company a discretionary bonus pool shall be established for certain employees of the Company and that the amount, distribution and participants would be determined by the board at the time of sale. Accordingly, on November 1, 2011, the board approved the allocation of certain profits interests resulting from the proposed merger and sale of the Company. An amount of $5.0 million was recorded in general and administrative expense in the Predecessor period in 2011.

StockBased_Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Stock-Based Compensation	'
	10. Stock-Based Compensation
	The Company follows the provisions of ASC 718, which requires the measurement and recognition of all stock-based payment awards (“stock-based awards”) made to employees, non-employee directors and consultants.
	The Company recognizes stock-based compensation expense for stock-based awards based on the grant date fair value of the awards on a straight-line basis over the requisite service period for those stock-based awards subject to time vesting and when it was probable a performance target would be met for those stock-based awards with vesting that is subject to the achievement of performance targets.
	Unless otherwise determined by the Company’s board of directors, stock-based awards granted prior to the initial public offering generally vest over a four-year period or had vesting that was dependent on the achievement of specified performance targets. The fair value of these stock-based awards was determined as of the grant date of each award using an option-pricing model and assuming no pre-vesting forfeiture of the awards.
	Given the absence of an active trading market for the Company’s common stock prior to the completion of its initial public offering, the fair value of the equity interests underlying stock-based awards was determined by the Company’s management. In doing so, valuation analyses were prepared in accordance with the guidelines outlined in the American Institute of Certified Public Accountants Practice Aid, Valuation of Privately-Held-Company Equity Securities Issued as Compensation, and were used by the Company’s management to assist in determining the fair value of the equity interests underlying its stock-based awards. Each equity interest was granted with a “threshold amount” meaning that the recipient of an equity security only participated to the extent that the Company appreciated in value from and after the date of grant of the equity interest (with the value of the entity as of the grant date being the “threshold amount”). The assumptions used in the valuation models were based on future expectations combined with management’s judgment. In the absence of a public trading market, the Company’s management exercised significant judgment and considered numerous objective and subjective factors to determine the fair value of the stock-based awards as of the date of each award. These factors included:
		•		contemporaneous or retrospective valuations for the Company and its securities;
		•		the rights, preferences, and privileges of the stock-based awards relative to each other as well as to the existing shareholders;
		•		lack of marketability of the Company’s equity securities;
		•		historical operating and financial performance;
		•		the Company’s stage of development;
		•		current business conditions and projections;
		•		hiring of key personnel and the experience of the Company’s management team;
		•		risks inherent to the development of the Company’s products and services and delivery of its solutions;
		•		trends and developments in the Company’s industry;
		•		the threshold amount for the stock-based awards and the values at which the stock-based awards would vest;
		•		the market performance of comparable publicly traded companies;
		•		likelihood of achieving a liquidity event, such as an initial public offering or a merger or acquisition of the Company given prevailing market conditions; and
		•		U.S. and global economic and capital market conditions.
	The Company completed its initial public offering in October 2013, and determined that the performance targets associated with the performance-based stock awards were met in full and consequently the performance-based stock awards would be fully vested. However, effective prior to the first day of public trading of the Company’s common stock, the Company accelerated the vesting of 2,167,870 shares of common stock issued in respect of the time-based stock awards and modified the vesting of 3,574,637 shares issued in respect of the performance-based stock awards so that 2,580,271 shares of common stock were fully vested and 994,366 shares of common stock will follow the same vesting schedule as the time-based stock awards that were granted on the same date as such performance-based stock awards.
	The Company recognized stock-based compensation expense of approximately $1.4 million for the shares of common stock issued in respect of the performance-based stock awards that vested at closing of its initial public offering and $2.4 million for the acceleration of vesting for a portion of the shares of common stock issued in respect of previously unvested time-based stock awards.
	Total stock-based compensation expense recognized for the time-based vesting stock awards was $2.3 million and $6.5 million for the years ended December 31, 2012 and 2013, respectively. No compensation expense was recognized for the year ended December 31, 2012 for the performance-based stock awards, since in the opinion of management, it was not then probable that any of the performance targets necessary for the performance-based stock awards to vest would have been met prior to their expiration. Total stock-based compensation expense recognized for the performance-based stock awards was $1.4 million for the year ended December 31, 2013, since the performance targets necessary for the performance-based stock awards were met prior to their expiration. The Company will recognize a recovery of expense if the actual forfeiture rate for the time-based stock awards is higher than estimated.
	The following tables present a summary of the stock-based awards activity for the years ended December 31, 2012 and 2013 for time-based vesting stock awards and performance-based vesting stock awards that were granted prior to the Company’s initial public offering (dollars in thousands):
			Time-Based Vesting
			Stock Awards(1)
	Granted			5,086,728
	Forfeitures			(10,762	)
	Vested			(375,879	)
	Non-Vested at December 31, 2012			4,700,087
	Granted			166,839
	Forfeitures			(17,837	)
	Vested			(4,120,756	)
	Non-Vested at December 31, 2013			728,333
			Performance-Based
			Vesting
			Stock Awards(1)
	Granted			3,418,853
	Forfeitures			(10,762	)
	Vested			—
	Non-Vested at December 31, 2012			3,408,091
	Granted			166,839
	Forfeitures			(17,916	)
	Vested			(2,828,681	)
	Non-Vested at December 31, 2013			728,333
	-1	The aggregate intrinsic value of restricted stock awards is calculated as the fair value of the common stock on December 31, 2013 of $14.18 per share.
	In connection with the initial public offering the Company granted restricted stock units under the prior equity plan. The following table provides a summary of the restricted stock units that were granted in connection with the initial public offering under this plan and the non-vested balance as of December 31, 2013(dollars in thousands except exercise price):
			Restricted Stock Units			Weighted
						Average
						Grant Date
						Fair Value
	Granted			531,719		$	12
	Forfeitures			—			—
	Vested and unissued			(243,705	)	$	12
	Non-vested at December 31, 2013			288,014		$	12
	As of December 31, 2013, there was $1.0 million of unrecognized compensation expense with respect to the time-based stock awards that were expected to be recognized over a weighted average period of 2.3 years. As of December 31, 2013, there was unrecognized compensation expense of $0.3 million with respect to the non-vested performance-based stock awards that were expected to be recognized over a weighted average period of 2.2 years. As of December 31, 2013, there was $3.5 million of unrecognized compensation expense with respect to the restricted stock units that were expected to be recognized over a weighted average period of 2.2 years.
	2013 Stock Incentive Plan
	The 2013 Stock Incentive Plan (the “2013 Plan”) became effective upon the closing of our initial public offering. The 2013 Plan of the Company provides for the grant of options, stock appreciation rights, restricted stock, restricted stock units and other stock-based awards to employees, officers, directors, consultants and advisors of the Company.
	Under the 2013 Plan, the Company may issue up to 18,000,000 shares of the Company’s common stock. At December 31, 2013, 11,161,556 shares were available for grant under the Plan.
	At December 31, 2013, the Company has reserved the following shares of common stock for future issuance:
			As of
			December 31,
			2013
	Common stock options granted and outstanding			5,619,671
	Restricted stock unit awards granted and unissued			481,623
Shares available for future grant under the 2013 stock incentive plan			11,161,556
Total shares of authorized common stock reserved for future issuance			17,262,850
Restricted stock awards granted and issued			737,150
Total shares authorized to be issued under			18,000,000
2013 Stock Incentive Plan
In connection with the initial public offering the Company granted stock option awards, restricted stock-based awards and restricted stock units under its 2013 Stock Incentive Plan. The following table provides a summary of the Company’s non-vested common stock at the date of the initial public offering and new stock-based awards, consisting of restricted stock units that were granted in connection with the initial public offering as well as stock options, restricted stock awards and restricted stock units that were granted under the 2013 Stock Incentive Plan and the non-vested balance as of December 31, 2013(dollars in thousands except exercise price):
		Stock			Weighted-				Weighted-				Aggregate
		Options			Average				Average				Intrinsic
					Exercise				Remaining				Value(2)
					Price				Contractual Term
									(In Years)
Granted—October 25, 2013			5,623,671		$	12
Exercised			—		$	—							$	—
Canceled			(4,000	)	$	12
Outstanding at December 31, 2013			5,619,671		$	12				9.8			$	12,251
Exercisable at December 31, 2013			113,714		$	12				9.8			$	248
Vested and expected to vest at December 31, 2013(1)			5,504,052		$	12				9.8			$	11,999
-1	This represents the number of vested options as of December 31, 2013 plus the number of unvested options outstanding as of December 31, 2013, which has been reduced using an estimated forfeiture rate.
-2	The aggregate intrinsic value was calculates based on the positive difference between the estimated fair value of the Company’s common stock on December 31, 2013 of $14.18 per share, or the date of exercise as appropriate, and the exercise price of the underlying options.
		Restricted Stock Awards			Weighted
					Average
					Grant Date
					Fair Value
Granted			741,150		$	12
Vested			(22,222	)	$	12
Canceled			(4,000	)
Unvested at December 31, 2013			714,928		$	12
-1	The aggregate intrinsic value of restricted stock awards is calculated as the fair value of the common stock on December 31, 2013 of $14.18 per share.
		Restricted Stock Units			Weighted
					Average
					Grant Date
					Fair Value
Granted			481,623		$	12
Vested and unissued			(20,067	)	$	12
Canceled			—			—
Unvested at December 31, 2013			461,556		$	12
For stock options issued under the Plan, the fair value of each option is estimated on the date of grant, and an estimated forfeiture rates is used when calculating stock-based compensation expense for the period. Stock options typically vest over four years and the Company recognizes compensation expense on a straight-line basis over the requisite service period of the award. The Company uses the Black-Scholes option pricing model to estimate the fair value of stock option awards and determine the related compensation expense. The assumptions used to compute stock-based compensation expense for awards granted under the 2013 Stock Incentive Plan are as follows:
		2013
Risk-free interest rate			1.9	%
Expected volatility			60	%
Expected life (in years)			6.25
Expected dividend yield			—
The risk-free interest rate assumption was based on the U.S. Treasury zero-coupon bonds with maturities similar to those of the expected term of the award being valued. The Company bases its estimate of expected volatility using volatility data from comparable public companies in similar industries and markets because there is currently limited public history for the Company’s common stock, and therefore, a lack of market-based company-specific historical and implied volatility information. The weighted-average expected life for employee options reflects the application of the simplified method, which represents the average of the contractual term of the options and the weighted-average vesting period for all option tranches. The simplified method has been used since the Company does not have sufficient historical exercise data to provide reasonable basis upon which to estimate expected term due to a limited history of stock option grants. The assumed dividend yield was based on the Company’s expectation of not paying dividends in the foreseeable future. In addition, the Company has estimated expected forfeitures of stock options based on management’s judgment due to the limited historical experience of forfeitures. The forfeiture rate was not material to the calculation of stock-based compensation expense. Unless otherwise determined by the Company’s board of directors, stock-based awards granted at the time of the initial public offering and subsequent to the initial public offering, generally vest annually over a four-year period. The Company recognized approximately $2.9 million of stock-based compensation expense during the year ended December 31, 2013 for awards granted under the 2013 Stock Incentive Plan.
As of December 31, 2013, there was $36.8 million of unrecognized compensation expense with respect to stock option awards that was expected to be recognized over a weighted average period of 3.8 years. As of December 31, 2013, there was $8.2 million of unrecognized compensation expense with respect to restricted stock awards that was expected to be recognized over a weighted average period of 3.8 years. As of December 31, 2013, there was unrecognized compensation expense of $5.5 million with respect to the restricted stock units that was expected to be recognized over a weighted average period of 3.8 years.
The following table presents total stock-based compensation expense for the time-based stock awards, performance—based stock awards and awards issued under the 2013 Stock Incentive Plan included in the Company’s consolidated statement of operations and comprehensive loss (in thousands):
		Predecessor					Successor
		Period from					Period from				Year Ended
		January 1					December 22				December 31,
		through					through				2012
		December 11,					December 31,
		2011					2011								Year Ended
															December 31,
															2013
Cost of revenue		$	—				$	—			$	26			$	126
Sales and marketing			—					—				266				459
Engineering and development			—					—				133				267
General and administrative			1,000					—				1,883				9,911
Total operating expense		$	1,000				$	—			$	2,308			$	10,763

Dividend

Dividend	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Dividend	'
	11. Dividend
	On November 9, 2012, the Company paid a dividend in the aggregate amount of $300.0 million to shareholders and non-vested shareholders of the Company. The Company paid a $289.5 million dividend to existing shareholders of the Company and $10.5 million to the non-vested shareholders of the Company. At the time the dividend was paid, a special authorization was made by the board of directors of the Company to allow the non-vested shareholders to participate since at that date the non-vested shareholders were not entitled to receive a dividend. The non-vested shareholders’ participation was subject to certain aggregate payments first being made to the existing shareholders of the Company which had not yet been met. For accounting purposes the dividend paid to the non-vested shareholders is treated as a modification of the original non-vested share award resulting in the measurement of compensation expense equal to the amount of the dividend. Certain of the non-vested shareholders were required to enter into clawback arrangements whereby if the non-vested shareholder’s employment with the Company terminated under certain defined conditions prior to the non-vested shareholder’s vesting in the non-vested shares, all or a portion of the dividend would be required to be repaid to the Company. Compensation expense related to the dividend amount subject to clawback arrangements with a future service requirement were being recognized over the future service period. Generally, the amount of the dividend subject to clawback reduced over time as the non-vested shares vest. For the dividend paid to the non-vested shareholders, $9.8 million was recorded in general and administrative expense in the year ended December 31, 2012 since this dividend amount was not attributable to a future service requirement by the class non-vested shareholders. The Company recorded the remaining $0.7 million of compensation expense during 2013.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	12. Income Taxes
	We account for income taxes in accordance with authoritative guidance, which requires the use of the asset and liability method. Under this method, deferred income tax assets and liabilities are determined based upon the difference between the consolidated financial statement carrying amounts and the tax basis of assets and liabilities and are measured using the enacted tax rate expected to apply in the years in which the differences are expected to be reversed.
	The domestic and foreign components of loss before income taxes for the periods presented (dollars in thousands):
			Year Ended
			December 31,			December 31,
			2012			2013
	United States		$	(216,478	)	$	(158,481	)
	Foreign			—			(2,894	)
	Total loss before income taxes		$	(216,478	)	$	(161,375	)
	The components of the provision (benefit) for income taxes consisted of the following (dollars in thousands):
			Predecessor					Successor
			Period from					Period from			Year Ended			Year Ended
			January 1,					December 22,			December 31,			December 31,
			2011 through					2011 through			2012			2013
			December 21,					December 31,
			2011					2011
	Current:
	U.S. federal		$	—				$	—		$	—		$	—
	State			126					10			407			267
	Foreign			—					—			—			914
	Total current provision			126					10			407			1,181
	Deferred:
	U.S. federal			(23,112	)				(2,240	)		(64,295	)		(50,007	)
	State			(5,482	)				(516	)		(13,315	)		(8,852	)
	Foreign			—					—			—			(1,590	)
	Change in valuation allowance			28,594					—			—			55,672
	Total deferred provision			—					(2,756	)		(77,610	)		(4,777	)
	Total expense (benefit)		$	126				$	(2,746	)	$	(77,203	)	$	(3,596	)
	The Company had a net deferred tax liability at the end of 2012. During 2013, the Company’s net deferred tax liability was eliminated due mainly to a reduction in a deferred liability related to definite-lived intangibles and for current period losses resulting in an increase to offsetting deferred tax assets. On December 22, 2011, the Company was acquired by Holdings. The Company recorded its intangible assets at fair value as a result of the acquisition. For U.S. GAAP purposes the definite-lived intangible assets have accelerated amortization, while for tax purposes the intangible assets maintained their historical basis and lives. As such, a deferred tax liability was established through purchase accounting. The reversal of the 2012 deferred tax liability in 2013 resulted in a deferred tax benefit in 2013. The Company established a valuation allowance on substantially all of their deferred tax assets during the year ended December 31, 2013. The benefit has been reduced after the establishment of the valuation allowance by the deferred tax expense associated with the tax amortization of assets that have an indefinite life for U.S. GAAP purposes. The state income tax is primarily driven by states who tax the Company based on a gross margin tax. The Company also has a subsidiary in Brazil that is generating taxable income and is solely driving the current foreign tax.
	The following table presents a reconciliation of the statutory federal rate, and the Company’s effective tax rate, for the periods presented:
			Year Ended
			December 31,			December 31,
			2012			2013
	U.S. federal taxes at statutory rate			34	%		34	%
	State income taxes, net of federal benefit			3.6			3.2
	Permanent differences			(2.5	)		(2.1	)
	Foreign rate differential						(0.2	)
	Change in valuation allowance—US						(34.0	)
	Change in valuation allowance—foreign						(0.5	)
	Rate change			0.4			0.4
	Other			0.2			1.4
	Total			35.7	%		2.2	%
	The provision (benefit) for income taxes shown on the consolidated statements of operations differs from amounts that would result from applying the statutory tax rates to income before taxes primarily because of state income taxes and certain permanent expenses that were not deductible, as well as the application of valuation allowances against U.S. and foreign assets.
	The significant components of the Company’s deferred income tax assets and liabilities as of December 31, 2012 and December 31, 2013 are as follows (in thousands):
			2012			2013
	Deferred income tax assets:
	Net operating loss carry forward		$	56,398		$	87,784
	Other			330			1,598
	Deferred compensation			387			556
	Deferred revenue			9,127			11,622
	Other reserves			9,971			5,848
	Stock-based compensation			—			2,788
	Total deferred income tax assets			76,213			110,196
	Deferred income tax liabilities:
	Purchased intangible assets			(85,836	)		(56,848	)
	Goodwill			(4,679	)		(10,736	)
	Property and equipment			(1,184	)		(16	)
	Total deferred income tax liabilities			(91,699	)		(67,600	)
	Valuation allowance			—			(55,786	)
	Net deferred income tax assets/(liabilities)		$	(15,486	)	$	(13,190	)
	As of December 31, 2013, the Company had NOL carry-forwards available to offset future U.S. federal taxable income of approximately $214.2 million and future state taxable income by approximately $152.8 million. These NOL carry-forwards expire on various dates through 2033. As of December 31, 2013, the Company had NOL carry-forwards in foreign jurisdictions available to offset future foreign taxable income by approximately $33.7 million. India has loss carry-forwards totaling $2.1 million that expire in 2021. The Company also has loss carry-forwards in the United Kingdom of $31.6 million and these losses do not expire.
	Utilization of the NOL carry-forwards may be subject to an annual limitation due to the ownership percentage change limitations. Ownership changes can limit the amount of net operating loss and other tax attributes that a company can use each year to offset future taxable income and taxes payable. As a result of the Sponsor Acquisition, the Company analyzed changes in ownership and determined that effective 2012, the Company could only use approximately $77.1 million of NOL carry-forwards per year.
	The Company regularly assesses its ability to realize its deferred tax assets. Assessing the realization of deferred tax assets requires significant management judgment. In determining whether its deferred tax assets are more likely than not realizable, the Company evaluated all available positive and negative evidence, and weighted the evidence based on its objectivity. Evidence the Company considered included:
	•		NOLs incurred from the Company’s inception to December 31, 2013;
	•		Expiration of various federal and state tax attributes;
	•		Reversals of existing temporary differences;
	•		Composition and cumulative amounts of existing temporary differences; and
	•		Forecasted profit before tax.
As of December 31, 2013, the Company is in a cumulative pre-tax book loss position for the past three years. The Company has generated significant NOLs since inception and as such it has no U.S. carryback capacity. The Company has a history of expiring state NOLs. The Company scheduled out the future reversals of existing deferred tax assets and liabilities and concluded that these reversals did not generate sufficient future taxable income to offset the existing net operating losses. After consideration of the available evidence, both positive and negative, the Company has recorded a valuation allowance of $55.8 million. For the Predecessor and Successor periods in 2011 and the years ended December 31, 2012 and 2013, the Company has recognized a tax expense (benefit) of $0.1 million, $(2.7) million, $(77.2) million and $(3.6) million, respectively in the consolidated statements of operations.
The Company files income tax returns in the United States for federal income taxes and in various state jurisdictions. The Company also files in several foreign jurisdictions. In the normal course of business, the Company is subject to examination by tax authorities throughout the world. Since the Company is in a loss carry-forward position, the Company is generally subject to U.S. federal and state income tax examinations by tax authorities for all years for which a loss carry-forward is available.
The Company recognizes, in its consolidated financial statements, the effect of a tax position when it is more likely than not, based on the technical merits, that the position will be sustained upon examination. The Company has no unrecognized tax positions at December 31, 2012 and December 31, 2013, that would affect its effective tax rate. The Company does not expect a significant change in the liability for unrecognized tax benefits in the next twelve months.
Permanent Reinvestment of Foreign Earnings
We consider the operating earnings of our non-United States subsidiaries to be indefinitely invested outside the United States under ASC 740-30 based on estimates that future and domestic cash generation will be sufficient to meet future domestic cash needs. The Company only has one cumulatively profitable foreign jurisdiction, Brazil, which has generated approximately $2.5 million of profits outside of the United States. If the Company were to repatriate these cumulative profits, there would be sufficient United States net operating losses to offset the tax impact of the repatriation. Should the Company decide to repatriate foreign earnings the Company would have to adjust the income tax provision in the period it determined that the earnings will no longer be indefinitely vested outside the United States.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	13. Commitments and Contingencies
	Operating Leases
	The Company has operating lease commitments for certain facilities and equipment that expire on various dates through 2024. The following table outlines future minimum annual rental payments under these leases at December 31, 2013:
	Year Ending December 31,	Amount (in thousands)
	2014	$	8,362
	2015		7,901
	2016		6,558
	2017		5,988
	2018		3,904
	Thereafter		15,441
	Total minimum lease payments	$	48,154
	Total rent expense incurred under non-cancellable operating leases for the Predecessor and Successor periods in 2011 and the years ended December 31, 2012 and 2013, were $1.5 million, $43,000, $2.7 million and $8.9 million, respectively.
	Contingencies
	From time to time, the Company is involved in legal proceedings or subject to claims arising in the ordinary course of its business. The Company is not presently a party to any legal proceedings that in the opinion of management, if determined adversely to the Company, would have a material adverse effect on its business, financial condition, operating results or cash flow. Regardless of the outcome, litigation can have an adverse impact on the Company because of defense and settlement costs, diversion of management resources and other factors.

Employee_Benefit_Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2013
Compensation And Retirement Disclosure [Abstract]	'
Employee Benefit Plans	'
	14. Employee Benefit Plans
	The Company has a defined contribution plan established under Section 401(k) of the Internal Revenue Code (the “401(k) Plan”), which covers substantially all employees. Employees are eligible to participate in the 401(k) Plan beginning on the first day of the month following commencement of their employment. The 401(k) Plan includes a salary deferral arrangement pursuant to which participants may elect to reduce their current compensation by up to the statutorily prescribed limit, equal to $17,500 in 2013, and have the amount of the reduction contributed to the 401(k) Plan. Beginning January 1, 2013, the Company matches 100% of the each participant’s annual contribution to the 401(k) plan up to 3% of the participant’s salary and then 50% of each participant’s contribution up to 2% of each participant’s salary. The match immediately vests 100%. Matching contributions by the Company related to the 2013 plan year were approximately $1.2 million were made to the 401(k) Plan. The Company did not make matching contributions to the 401(k) Plan in the Predecessor and Successor periods in 2011 or the year ended December 31, 2012.
	In connection with the Dotster acquisition in 2011, the Company assumed a defined contribution plan established under Section 401(k) of the Internal Revenue Code (the “Dotster 401(k) Plan”), in which employees are eligible to participate upon the date of hire. Under the Dotster 401(k) Plan, the Company matches 100% of each participant’s annual contribution to the Dotster 401(k) Plan up to 3% of each participant’s salary and then 50% of each participant’s annual contribution to the Dotster 401(k) Plan up to 2% of each participant’s salary. The match immediately vests 100%. Matching contributions by the Company related to the 2011, 2012 and 2013 plan years in the amounts of $62,000, $0.2 million and $0.4 million, respectively, were made to the Dotster 401(k) Plan.
	In connection with the HostGator acquisition in 2012, the Company assumed a defined contribution plan established under Section 401(k) of the Internal Revenue Code (the “HostGator 401(k) Plan”), in which employees are eligible to participate on the date of hire. Under the HostGator 401(k) Plan, the Company matches 25% of each participant’s annual contribution up to 4% of each participant’s salary, vesting 100% after three years of service. Matching contributions by the Company related to the 2012 and 2013 plan years in the amounts of $0.1 million for each year, were made to the HostGator 401(k) Plan.

Related_Party_Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2013
Related Party Transactions [Abstract]	'
Related Party Transactions	'
	15. Related Party Transactions
	The Company has various agreements in place with related parties. Below are details of related party transactions that occurred during the Predecessor and Successor periods in 2011 and the years ended December 31, 2012 and 2013.
	The Company has contracts with entities for outsourced services. The ownership of these entities is held directly or indirectly by family members of the Company’s chief executive officer, who is also a director of the Company. For the Predecessor period in 2011 and the Successor year ended December 31, 2012, $4.8 million and $4.6 million, respectively, was recorded in cost of revenue $0.6 million and $1.0 million, respectively, was recorded in engineering and development expense, $0.1 million and $0.3 million, respectively, was recorded in sales and marketing expense, and $0.9 million was recorded in general and administrative expense in the year ended December 31, 2012, relating to services provided to the Company under these agreements. Of these amounts, $0.3 million and $0.2 million was recorded in accrued expenses or accounts payable at December 31, 2011 and 2012, respectively. For the year ended December 31, 2013, $5.2 million was recorded in cost of revenue, $0.9 million was recorded in engineering and development expense, $0.3 million was recorded in sales and marketing expense and $0.9 million was recorded in general and administrative expense relating to services provided under these agreements.
	The Company also has an agreement with an entity that provides a multi-layered third-party security application that is sold by the Company. The entity is collectively majority owned by the Company’s chief executive officer, and two investors in the Company, one of whom is a director of the Company, and who are beneficial owners, directly and indirectly, of equity in the Company. For the Predecessor period in 2011 and the Successor years ended December 31, 2012 and 2013, the Company recorded $1.1 million, $2.2 million and $3.0 million, respectively, in cost of revenue related to this agreement.

Subsequent_Events

Subsequent Events	12 Months Ended
	Dec. 31, 2013
Subsequent Events [Abstract]	'
Subsequent Events	'
	16. Subsequent Events
	On January 23, 2014, the Company acquired the web presence business of Directi Web Technologies Holdings, Inc. (“Directi”). Directi provides web presence solutions to SMBs in various countries, including India, the United States, Turkey, China, Russia and Indonesia. After giving effect to certain post-closing adjustments, the Company expects the total consideration for this acquisition to be between $100.0 million and $110.0 million. The purchase consideration is expected to consist of, cash payments of $25.5 million (including $20.5 million paid at the closing and a $5.0 million advance payment paid in August 2013), a promissory note from us to Directi Holdings of $51.0 million and the issuance of 2,123,039 shares of the Company’s common stock to Directi Holdings. The promissory note will mature on April 15, 2014. The principal amount of the promissory note could increase if Directi meets certain performance metrics for the period from July 1, 2013 through March 30, 2014.
	In addition, in connection with the acquisition of Directi, the Company may be obligated to make additional aggregate payments of up to a maximum of approximately $62.0 million, subject to specified terms, conditions and operational contingencies.
	With respect to the consolidated financial statements as of and for the year ended December 31, 2013, the Company performed an evaluation of subsequent events through the date of this filing.

Quarterly_Financial_Data_unaud

Quarterly Financial Data (unaudited)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]	'
Quarterly Financial Data (unaudited)	'
	17. Quarterly Financial Data (unaudited)
		For the three months ended:
		March 31,			June 30,			Sept. 30,			Dec. 31,			March 31,			June 30,			Sept. 30,			Dec. 31,
		2012			2012			2012			2012			2013			2013			2013			2013
	Revenue	$	41,293		$	50,475		$	83,353		$	117,035		$	122,741		$	128,222		$	132,913		$	136,420
	Gross profit		2,792			8,409			13,861			29,915			35,533			40,250			45,748			48,862
	Loss from operations		(21,418	)		(20,186	)		(25,140	)		(23,603	)		(12,234	)		(10,880	)		(4,335	)		(35,599	)
	Net loss attributable to Endurance International Group Holdings, Inc.		(18,765	)		(20,251	)		(27,692	)		(72,590	)		(21,728	)		(42,958	)		(27,027	)		(67,774	)
	Basic and diluted net loss per share attributable to Endurance International Group Holdings, Inc.	$	(0.19	)	$	(0.21	)	$	(0.29	)	$	(0.75	)	$	(0.22	)	$	(0.44	)	$	(0.28	)	$	(0.57	)
	In the three months ended December 31, 2013 net loss attributable to Endurance International Group Holdings, Inc. included $24.9 million of expense attributable to bonus payments in connection with the Company’s initial public offering. In addition, the three months ended December 31, 2013 included $9.7 million of stock-based compensation expense primarily attributable to the acceleration of certain non-vested shares and the granting of stock-based awards at the time of the initial public offering.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Basis of Preparation	'
	Basis of Preparation
	The accompanying consolidated financial statements, which include the accounts of the Company and its subsidiaries and reflect the Sponsor Acquisition, as described in Note 3, have been prepared using accounting principles generally accepted in the United States of America (“U.S. GAAP”). All intercompany transactions have been eliminated on consolidation. The Company has reviewed the criteria of the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 280-10, Segment Reporting, and determined that the Company is comprised of only one segment for reporting purposes.
	The Sponsor Acquisition was accounted for as a purchase in accordance with the FASB ASC 805, Business Combinations (“ASC 805”), and the purchase price was recorded in the Company’s consolidated financial statements. The acquired company’s financial statements reflect the new accounting basis recorded by the acquiring company. Accordingly, the Company’s purchase accounting adjustments have been reflected in the Company’s financial statements for the period commencing December 22, 2011 and reflect the estimated fair value of the Company’s assets and liabilities as of December 22, 2011, the date of the Sponsor Acquisition.
	As a result of the Sponsor Acquisition, the period from January 1, 2011 to December 21, 2011, for which the Company’s results of operations and cash flows are presented, are reported as the “Predecessor” period. The period from December 22, 2011 through December 31, 2011 and the years ended December 31, 2012 and 2013, for which the Company’s results of operations and cash flows are presented, are reported as the “Successor” period.
	Holdings had no ownership interest in the Company prior to December 22, 2011. Therefore, for comparative reporting purposes, the Company reports its financial results, as presented in the Predecessor period, at the EIG Investors company level, which was the primary holding company until the Sponsor Acquisition. Because there was no activity in the Company prior to the Sponsor Acquisition, nor was there any change in the number of shares issued or the par value of the shares of EIG Investors, it was determined that the Company is essentially the same as EIG Investors. Therefore, the retroactive presentation of the conversion includes equity activity of EIG Investors for the successor period and the conversion has not been applied to the predecessor period.
	The June 25, 2013 conversion of the Company into a Delaware C-corporation, as discussed in Note 1, has been applied to the Company’s financial statements retroactively to December 22, 2011, as if the conversion was effective December 22, 2011.
Use of Estimates	'
	Use of Estimates
	U.S. GAAP requires management to make certain estimates, judgments and assumptions that affect the reported amounts of assets, liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. These estimates, judgments and assumptions used in preparing the accompanying consolidated financial statements are based on the relevant facts and circumstances as of the date of the consolidated financial statements. Although the Company regularly assesses these estimates, judgments and assumptions used in preparing the consolidated financial statements, actual results could differ from those estimates. Changes in estimates are recorded in the period in which they become known. The more significant estimates reflected in these consolidated financial statements include estimates of fair value of assets acquired and liabilities assumed under purchase accounting related to the Company’s acquisitions and when evaluating goodwill and long-lived assets for potential impairment, the estimated useful lives of intangible and depreciable assets, stock-based compensation, certain accruals, reserves and deferred taxes.
Cash Equivalents	'
	Cash Equivalents
	Cash and cash equivalents include all highly liquid investments with remaining maturities of three months or less at the date of purchase.
Restricted Cash	'
	Restricted Cash
	Restricted cash is composed of certificates of deposits and cash held by merchant banks and payment processors, which provide collateral against any charge-backs, fees, or other items that may be charged back to the Company by credit card companies and other merchants.
Accounts Receivable	'
	Accounts Receivable
	Accounts receivable is primarily composed of cash due from credit card companies for unsettled transactions charged to subscribers’ credit cards. As these amounts reflect authenticated transactions that are fully collectible, the Company does not maintain an allowance for doubtful accounts. The Company also accrues for earned referral fees and commissions, which are governed by reseller or affiliate agreements when the amount is reasonably estimable.
Fair Value of Financial Instruments	'
	Fair Value of Financial Instruments
	The carrying amounts of the Company’s financial instruments, which include cash equivalents, accounts receivable, accounts payable and certain accrued expenses, approximate their fair values due to their short maturities. The fair value of the Company’s notes payable are based on the borrowing rates currently available to the Company for debt with similar terms and average maturities and approximate their carrying value.
Concentrations of Credit and Other Risks	'
	Concentrations of Credit and Other Risks
	Financial instruments which potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents and accounts receivable. Cash and cash equivalents are maintained at accredited financial institutions and PayPal balances are at times without and in excess of, federally insured limits. The Company has never experienced any losses related to these balances and does not believe that it is subject to unusual credit risk beyond the normal credit risk associated with commercial banking relationships.
	For the Predecessor and Successor periods in 2011 and the years ended December 31, 2012 and 2013, no subscriber represented 10% or more of the Company’s total revenue.
Property and Equipment	'
	Property and Equipment
	Property and equipment is recorded at cost or fair value if acquired in an acquisition. The Company also capitalizes the direct costs of constructing additional computer equipment for internal use, as well as upgrades to existing computer equipment which extend the useful life, capacity or operating efficiency of the equipment. Capitalized costs include the cost of materials, shipping and taxes. Materials used for repairs and maintenance of computer equipment are expensed and recorded as a cost of revenue. Materials on hand and construction-in-process are recorded as property and equipment. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets as follows:
	Software		Two years
	Computers and office equipment		Three years
	Furniture and fixtures		Five years
	Leasehold improvements		Shorter of useful life or remaining term of the lease
Software Development Costs	'
	Software Development Costs
	The Company accounts for software development costs for internal use software under the provisions of ASC 350-40, “Internal-Use Software” (“ASC 350”). Accordingly, certain costs to develop internal-use computer software are capitalized, provided these costs are expected to be recoverable. There were no such costs capitalized during the year ended December 31, 2012. There was $1.2 million of software development costs capitalized for the year ended December 31, 2013.
Investments	'
	Investments
	In 2012, the Company made two minority investments in privately-held companies. The Company’s voting interest in each of these companies was between 25% and 50%. The Company accounts for these investments under the equity method of accounting. Under this method, the investment balance, originally recorded at cost, is adjusted to recognize the Company’s share of net earnings or losses of the investee company as they occur, limited to the extent of the Company’s investment in, advances to and commitments for the investee. The Company’s share of net earnings or losses of the investee are reflected in equity losses of unconsolidated entities, net of tax, in the Company’s accompanying consolidated statements of operations.
	The Company assesses the need to record impairment losses on its investments and records such losses when the impairment of an investment is determined to be other than temporary in nature. On October 31, 2013 the Company reduced its 50% voting interest in one of the minority investments to 40% and recorded a $2.6 million impairment charge (see Note 7).
Goodwill	'
	Goodwill
	Goodwill relates to amounts that arose in connection with the Company’s various business combinations and represents the difference between the purchase price and the fair value of the identifiable intangible and tangible net assets when accounted for using the acquisition method of accounting. Goodwill is not amortized, but is subject to periodic review for impairment. Events that would indicate impairment and trigger an interim impairment assessment include, but are not limited to, current economic and market conditions, including a decline in value, a significant adverse change in certain agreements that would materially affect reported operating results, business climate or operational performance of the business and an adverse action or assessment by a regulator.
	In accordance with ASC 350, Intangibles—Goodwill and Other, (“ASC 350”), the Company is required to review goodwill by reporting unit for impairment at least annually or more often if there are indicators of impairment present. The Company has determined its entire business represents one reporting unit. Historically, the Company has performed its annual impairment analysis during the fourth quarter of each year. The provisions of ASC 350 require that a two-step impairment test be performed for goodwill. In the first step, the Company compares the fair value of its reporting unit to which goodwill has been allocated to its carrying value. If the fair value of the reporting unit exceeds the carrying value of the net assets assigned to that reporting unit, goodwill is considered not impaired and the Company is not required to perform further testing. If the carrying value of the net assets assigned to the reporting unit exceeds the fair value of the reporting unit, then the Company must perform the second step of the impairment test in order to determine the implied fair value of the reporting unit’s goodwill. If the carrying value of a reporting unit’s goodwill exceeds its implied fair value, then the Company would record an impairment loss equal to the difference.
	Due to the timing of the Sponsor Acquisition on December 22, 2011, and the absence of indicators or impairment through the year ended December 31, 2011, the Company recorded no impairment of goodwill for the 2011 successor period ended December 31, 2011. As of December 31, 2012 and 2013, the fair value of the Company’s reporting unit exceeded the carrying value of the reporting unit’s net assets by more than 600% and, therefore no impairment existed as of those dates.
	Determining the fair value of a reporting unit, if applicable, requires the Company to make judgments and involves the use of significant estimates and assumptions. These estimates and assumptions relate to, among other things, revenue growth rates and operating margins used to calculate projected future cash flows, risk-adjusted discount rates, future economic and market conditions and determination of appropriate market comparables. The Company bases its fair value estimates on assumptions it believes to be reasonable but that are unpredictable and inherently uncertain. Actual future results may differ from those estimates.
	The Company had goodwill of $936.7 million and $984.2 million as of December 31, 2012 and 2013, respectively, and no impairment charges have been recorded.
Long-Lived Assets	'
	Long-Lived Assets
	The Company’s long-lived assets consist primarily of intangible assets, including acquired subscriber relationships, trade names, intellectual property, developed technology, in-process research and development (“IPR&D”). We also have long-lived tangible assets, primarily consisting of property and equipment. The majority of the Company’s intangibles are recorded in connection with its various business combinations, including the Sponsor Acquisition. The Company’s intangibles are recorded at fair value at the time of their acquisition. The Company amortizes intangibles over their estimated useful lives.
	Determination of the estimated useful lives of the individual categories of intangible assets is based on the nature of the applicable intangible asset and the expected future cash flows to be derived from the intangible asset. Amortization of intangible assets with finite lives is recognized in accordance with their estimated projected cash flows.
	The Company evaluates long-lived intangible and tangible assets whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If indicators of impairment are present and undiscounted future cash flows are less than the carrying amount, the fair value of the assets is determined and compared to the carrying value. If the fair value is less than the carrying value, then the carrying value of the asset is reduced to the estimated fair value and an impairment loss is charged to expense in the period the impairment is identified. No such impairment losses have been identified in the Predecessor and Successor periods in 2011 and for the years ended December 31, 2012 and 2013.
Acquired In-Process Research and Development (IPR&D)	'
	Acquired In-Process Research and Development (IPR&D)
	Acquired IPR&D represents the fair value assigned to research and development assets that the Company acquires that have not been completed at the date of acquisition. The acquired IPR&D is capitalized as an intangible asset and reviewed on a quarterly basis to determine future use. Any impairment loss of the acquired IPR&D is charged to expense in the period the impairment is identified. Upon commercialization, the acquired fair value of the IPR&D will be amortized over its estimated useful life. No such impairment losses have been identified in the Predecessor and Successor periods in 2011 and the years ended December 31, 2012 and 2013. During 2013 the Company completed its development process of in-process research and development it had acquired as of December 31, 2012 and the capitalized amount was reclassified to developed technology as of December 31, 2013 and is being amortized over the estimated useful life.
Deferred Financing Costs	'
	Deferred Financing Costs
	Deferred financing costs comprise fees and costs incurred by the Company in connection with obtaining notes payable. Deferred financing costs are amortized over the term of the related debt agreement.
Revenue Recognition	'
	Revenue Recognition
	The Company generates revenue from selling subscriptions for cloud-based products and services. The subscriptions are similar across all of the Company’s brands and are provided under contracts pursuant to which the Company has ongoing obligations to support the subscriber. These contracts are generally for service periods of up to 36 months and typically require payment in advance. The Company recognizes the associated revenue ratably over the service period, whether the associated revenue is derived from a direct subscriber or through a reseller. Deferred revenue represents the liability to subscribers for advance billings for services not yet provided and the fair value of the assumed liability outstanding for subscriber relationships purchased in an acquisition.
	The Company sells domain name registrations that provide a subscriber with the exclusive use of a domain name. These domains are obtained either by one of the Company’s registrars on the subscriber’s behalf, or by the Company from third-party registrars on the subscriber’s behalf. Domain registration fees are non-refundable.
	Revenue from the sale of a domain name registration by a registrar within the Company is recognized ratably over the subscriber’s service period as the Company has the obligation to provide support over the domain term. Revenue from the sale of a domain name registration purchased by the Company from a third-party registrar is recognized when the subscriber is billed on a gross basis as there are no remaining Company obligations once the sale to the subscriber occurs, and the Company has full discretion on the sales price and bears all credit risk.
	Revenue from the sale of non-term based applications and services, such as online security products and professional technical services, referral fees and commissions, is recognized when the product is purchased, the service is provided or the referral fee or commission is earned, respectively.
	A substantial amount of the Company’s revenue is generated from transactions that are multiple-element services arrangements that may include hosting plans, domain name registrations, and cloud-based products and services.
	The Company follows the provisions of the FASB, Accounting Standards Update (“ASU”) No. 2009-13, (“ASU 2009-13”), Revenue Recognition (Topic 605), Multiple-Deliverable Revenue Arrangements—a consensus of the FASB Emerging Issues Task Force and allocates revenue to each deliverable in a multiple- element service arrangement based on its respective relative selling price.
	Under ASU 2009-13, to treat deliverables in a multiple-element service arrangement as separate units of accounting, the deliverables must have standalone value upon delivery. If the deliverables have standalone value upon delivery, the Company accounts for each deliverable separately. Hosting services, domain name registrations, cloud-based products and services have standalone value and are often sold separately.
	When multiple deliverables included in a multiple-element service arrangement are separated into different units of accounting, the total transaction amount is allocated to the identified separate units based on a relative selling price hierarchy. The Company determines the relative selling price for a deliverable based on vendor specific objective evidence, (“VSOE”), of fair value, if available, or best estimate of selling price, (“BESP”), if VSOE is not available. The Company has determined that third-party evidence of selling price, (“TPE”), is not a practical alternative due to differences in its multi-brand offerings compared to competitors and the lack of availability of relevant third-party pricing information. The Company has not established VSOE for our offerings due to lack of pricing consistency, the introduction of new products, services and other factors. Accordingly, the Company generally allocates revenue to the deliverables in the arrangement based on the BESP. The Company determines BESP by considering its relative selling prices, competitive prices in the marketplace and management judgment; these selling prices, however, may vary depending upon the particular facts and circumstances related to each deliverable. The Company analyzes the selling prices used in its allocation of transaction amount, at a minimum, on a quarterly basis. Selling prices are analyzed on a more frequent basis if a significant change in our business necessitates a more timely analysis.
Direct Costs of Revenue	'
	Direct Costs of Revenue
	The Company’s direct costs of revenue include only those costs directly incurred in connection with the provision of its cloud-based products and services. The direct costs of registering domain names with registries are spread over the terms of the arrangement and the cost of reselling domains of other third-party registrars are expensed as incurred. Cost of revenue includes depreciation on data center equipment and support infrastructure and amortization expense related to the amortization of long-lived intangible assets.
Engineering and Development Costs	'
	Engineering and Development Costs
	Engineering and development costs incurred in the development and maintenance of the Company’s technology infrastructure are expensed as incurred.
Sales and Marketing Costs	'
	Sales and Marketing Costs
	The Company engages in sales and marketing through various online marketing channels, which include affiliate and search marketing as well as online partnerships. The Company expenses sales and marketing costs as incurred. For the Predecessor and Successor periods in 2011 and the years ended December 31, 2012 and 2013, the Company’s sales and marketing costs were $54.9 million, $1.5 million, $83.1 million and $117.7 million, respectively.
Foreign Currency	'
	Foreign Currency
	The Company has sales in a number of foreign currencies. In 2013, the Company commenced operations in foreign locations which report in the local currency. The assets and liabilities of the Company’s foreign locations are translated into U.S. dollars at current exchange rates as of the balance sheet date, and revenues and expenses are translated at average monthly exchange rates. The resulting translation adjustments are recorded as a separate component of stockholders’ equity and have not been material. Foreign currency transaction gains and losses relate to the settlement of assets or liabilities in another currency.
	Foreign currency transaction gains (losses) were not material during the Predecessor and Successor periods in 2011, and the year ended December 31, 2012. Foreign currency transaction losses were $1.2 million during the year ended December 31, 2013. These amounts are recorded in general and administrative expense.
Income Taxes	'
	Income Taxes
	Income taxes are accounted for in accordance with ASC 740, Accounting for Income Taxes, (“ASC 740”). Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carry-forwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.
	ASC 740 clarifies the accounting for income taxes, by prescribing a minimum recognition threshold that a tax position is required to meet before being recognized in the financial statements. The Company recognizes the effect of income tax positions only if those positions are more likely than not of being sustained. Recognized income tax positions are measured at the largest amount that is more likely than not to be realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. There were no unrecognized tax benefits in the Predecessor and Successor Periods in 2011, and the years ended December 31, 2012 and 2013.
	The Company records interest related to unrecognized tax benefits in interest expense and penalties in operating expenses. During the Predecessor and Successor periods in 2011, and the years ended December 31, 2012 and 2013, the Company did not recognize any interest and penalties related to unrecognized tax benefits.
Stock-Based Compensation	'
	Stock-Based Compensation
	The Company follows the provisions of ASC 718, Compensation—Stock Compensation (“ASC 718”), which requires employee stock-based payments to be accounted for under the fair value method. Under this method, the Company is required to record compensation cost based on the estimated fair value for stock-based awards granted over the requisite service periods for the individual awards, which generally equals the vesting periods. The Company uses the straight-line amortization method for recognizing stock-based compensation expense.
	The Company estimates the fair value of employee stock options on the date of grant using the Black-Scholes option-pricing model, which requires the use of highly subjective estimates and assumptions. For restricted stock awards granted, the Company estimates the fair value of each restricted stock award based on the closing trading price of its common stock on the date of grant.
Net Loss per Share	'
	Net Loss per Share
	The Company considered ASC 260-10, Earnings per Share, (ASC 260-10) which requires the presentation of both basic and diluted earnings per share in the Consolidated Statements of Operations. The Company’s basic net loss per share is computed by dividing net loss by the weighted average number of shares of common stock outstanding for the period and, if there are dilutive securities, diluted income per share is computed by including common stock equivalents which includes shares issuable upon the exercise of stock options, net of shares assumed to have been purchased with the proceeds, using the treasury stock method. All share data retroactively reflect the shares of the Company’s common stock after giving effect to the 105,187.363-for-one stock split and the filing of the restated certificate of incorporation.
	The Company’s potentially dilutive shares of common stock would be excluded from the diluted weighted-average number of shares of common stock outstanding as their inclusion in the computation would be anti-dilutive due to net losses. For the years ended December 31, 2011, 2012 and 2013, non-vested shares, stock options, restricted stock awards and restricted stock units amounting to zero, 8,108,177 and 8,822,924, respectively, were excluded from the denominator in the calculation of diluted earnings per share as their inclusion would have been anti-dilutive.
		Period from			Year Ended			Year Ended
		December 22			December 31,			December 31,
		through			2012			2013
		December 31,
		2011
		(in thousands, except share
		amount and per share data)
	Computation of basic and diluted net loss per share:
	Net loss attributable to Endurance International Group Holdings, Inc.	$	(4,381	)	$	(139,298	)	$	(159,187	)
	Net loss per share attributable to Endurance International Group Holdings, Inc.:
	Basic and diluted	$	(0.05	)	$	(1.44	)	$	(1.55	)
	Weighted average number of shares of common stock used to compute net loss per share attributable to Endurance International Group Holdings, Inc.:
	Basic and diluted		96,370,134			96,562,674			102,698,773
Guarantees	'
	Guarantees
	The Company has the following guarantees and indemnifications:
	In connection with its acquisitions of companies and assets from third parties, the Company may provide indemnification or guarantees to the sellers in the event of damages for breaches or other claims covered by such agreements.
	In connection with various vendor contracts, including those by which a product or service of a third party is offered to subscribers of the Company, standard guaranty of subsidiary obligations and indemnification obligations exist.
	Pursuant to the purchase agreement for the acquisition of Homestead, the Company assumed a reseller agreement between the former owner of Homestead and a reseller. In accordance with the reseller agreement, the Company has indemnified its reseller for certain losses related to a patent litigation matter. The former owner of Homestead is defending this action, paying for the legal expenses incurred, and indemnifying the Company, subject to a deductible and a limit. Any settlements or indemnity claims also remain subject to the terms of indemnification provided in the purchase agreement. The litigation is in the early stages and the outcome is unknown and the Company therefore cannot reasonably estimate potential losses at this time.
	As permitted under Delaware and other applicable law, the Company’s charter and by-laws and those of its subsidiary companies provide that the Company shall indemnify its officers and directors for certain liabilities, including those incurred by reason of the fact that the officer or director is, was, or has agreed to serve as an officer or director of the Company. The maximum potential amount of future payments the Company could be required to make under these indemnification provisions is unlimited.
	The Company leases office space and equipment under various operating leases. The Company has standard indemnification arrangements under these leases that require the Company to indemnify the lessor against losses, liabilities and claims incurred in connection with the premises or equipment covered by the Company’s lease agreements, the Company’s use of the premises, property damage or personal injury and breach of the agreement.
	Through December 31, 2013, the Company had not experienced any losses related to these indemnification obligations and no claims with respect thereto were outstanding other than the Homestead claim as described above. The Company does not expect significant claims related to these indemnification obligations and consequently concluded that the fair value of these obligations is negligible and no related liabilities were established.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In February 2013, the FASB issued ASU No. 2013-02, Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income (‘‘ASU 2013-02’’) to improve the reporting of reclassifications out of accumulated other comprehensive income. ASU 2013-02 requires an entity to report the effect of reclassifications out of accumulated other comprehensive income on the respective line items in net income if the amount being reclassified is required under U.S. GAAP to be reclassified in its entirety to net income. For accumulated other comprehensive income reclassification items that are not required under U.S. GAAP to be reclassified in their entirety into net income in the same reporting period, entities must provide a cross reference to other required U.S. GAAP disclosures that provide additional detail about those amounts. ASU 2013-02 became effective for fiscal years, and interim periods within those years, beginning after December 15, 2012. The adoption of ASU 2013-02 did not have any impact on the Company’s consolidated financial statements.
	In March 2013, the FASB issued ASU No. 2013-05, Parent’s Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity (‘‘ASU 2013-05’’). ASU 2013-05 addresses the accounting for the cumulative translation adjustment when a parent either sells a part or all of its investment in a foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets that is a nonprofit activity or a business within a foreign entity. ASU 2013-05 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013 and should be applied prospectively. The Company believes the adoption of ASU 2013-05 will not have any impact on its consolidated financial statements.
	In July 2013, the FASB issued ASU No. 2013-11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carry-forward, a Similar Tax Loss, or a Tax Credit Carry-forward Exists (“ASU 2013-11”) to clarify that an unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss (“NOL”) carry-forward, a similar tax loss, or a tax credit carry-forward, with some allowed exceptions. ASU 2013-11 does not impose any new recurring disclosure requirements because it does not affect the recognition or measurement of uncertain tax positions. ASU 2013-11 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. The Company believes the adoption of ASU 2013-11 will not have an impact on its consolidated financial statements.
Reclassifications	'
	Reclassifications
	In 2013, the Company has reclassified deferred consideration in the consolidated statements of cash flows from net cash used in investing activities to net cash provided by financing activities. Prior years have also been reclassified to conform to current year presentation.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Summary of Estimated Useful Lives	'
	Depreciation is computed using the straight-line method over the estimated useful lives of the related assets as follows:
	Software		Two years
	Computers and office equipment		Three years
	Furniture and fixtures		Five years
	Leasehold improvements		Shorter of useful life or remaining term of the lease
Potentially Dilutive Shares of Common Stock Excluded from the Diluted Weighted-average Number of Shares of Common Stock Outstanding	'
	For the years ended December 31, 2011, 2012 and 2013, non-vested shares, stock options, restricted stock awards and restricted stock units amounting to zero, 8,108,177 and 8,822,924, respectively, were excluded from the denominator in the calculation of diluted earnings per share as their inclusion would have been anti-dilutive.
		Period from			Year Ended			Year Ended
		December 22			December 31,			December 31,
		through			2012			2013
		December 31,
		2011
		(in thousands, except share
		amount and per share data)
	Computation of basic and diluted net loss per share:
	Net loss attributable to Endurance International Group Holdings, Inc.	$	(4,381	)	$	(139,298	)	$	(159,187	)
	Net loss per share attributable to Endurance International Group Holdings, Inc.:
	Basic and diluted	$	(0.05	)	$	(1.44	)	$	(1.55	)
	Weighted average number of shares of common stock used to compute net loss per share attributable to Endurance International Group Holdings, Inc.:
	Basic and diluted		96,370,134			96,562,674			102,698,773

Acquisitions_Tables

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2013
Pro Forma Results Include Amounts Derived from Historical Financial Results of Acquired Businesses	'
	The pro forma results include amounts derived from the historical financial results of the acquired businesses for the period presented and are not necessarily indicative of the results that would have occurred had the acquisitions been consummated on January 1, 2012. There was no pro forma impact on the results of operations for 2013, as the HostGator and Homestead acquisitions closed prior to January 1, 2013.
		Pro forma
		For the Year
		Ended
		December 31,
		2012
	Revenues	$	415,209
	Net loss attributable to common stockholders	$	(125,021	)
	Net loss per share attributable to common stockholders basic and diluted	$	(1.29	)
Homestead Technologies Inc [Member]	'
Summary of Preliminary Purchase Price Allocation on the Acquisition Date	'
	The following table summarizes the Homestead purchase price allocation on the acquisition date and the estimated fair values of goodwill, intangible assets and tangible assets acquired and liabilities assumed (in thousands):
	Accounts receivable	$	1,575
	Prepaid expenses and other assets		399
	Property and equipment		1,287
	Intangible assets		58,240
	Goodwill		22,063
	Total assets acquired		83,564
	Accounts payable		2,178
	Reserves for refunds and chargebacks		30
	Deferred tax liability		17,558
	Deferred revenue		2,337
	Total liabilities assumed		22,103
	Net assets acquired	$	61,461
HostGator [Member]	'
Summary of Preliminary Purchase Price Allocation on the Acquisition Date	'
	The following table summarizes the preliminary purchase price allocation on the acquisition date and the estimated fair values of goodwill, intangible assets and tangible assets acquired and liabilities assumed (in thousands):
	Cash	$	593
	Accounts receivable		512
	Prepaid expenses and other current assets		2,762
	Property and equipment		315
	Intangible assets		116,060
	Investment		10,000
	Deferred tax asset		2,067
	Goodwill		189,296
	Total assets acquired		321,605
	Accounts payable		147
	Accrued expenses		5,102
	Deferred revenue		16,558
	Total liabilities assumed		21,807
	Net assets acquired	$	299,798

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Basis of Fair Value Measurements	'
	The earn-out consideration in the table below is included in total deferred consideration in the Company’s consolidated balance sheets.
	Basis of Fair Value Measurements
		Balance		Quoted Prices		Significant		Significant
				in Active Markets		Other		Unobservable
				for Identical Items		Observable		Inputs
				(Level 1)		Inputs		(Level 3)
						(Level 2)
		(in thousands)
	Balance at December 31, 2012:
	Financial liabilities:
	Contingent earn-out consideration	$	1,383		—		—	$	1,383
	Total financial liabilities	$	1,383		—		—	$	1,383
	Balance at December 31, 2013:
	Financial liabilities:
	Contingent earn-out consideration	$	1,655		—		—	$	1,655
	Total financial liabilities	$	1,655		—		—	$	1,655

Property_and_Equipment_Tables

Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2013
Property Plant And Equipment [Abstract]	'
Components of Property and Equipment	'
	Components of property and equipment consisted of the following (in thousands):
		Year Ended
		December 31,
		2012			2013
	Software	$	937		$	4,503
	Computers and office equipment		33,314			59,201
	Furniture and fixtures		1,570			3,715
	Leasehold improvements		4,692			6,033
	Construction in process		748			1,392
	Property and equipment—at cost		41,261			74,884
	Less accumulated depreciation		(6,657	)		(25,129	)
	Property and equipment—net	$	34,604		$	49,715

Goodwill_and_Other_Intangible_1

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]	'
Changes in Goodwill Balances	'
	The following table summarizes the changes in the Company’s goodwill balances as of December 31, 2012 and 2013 (in thousands):
	Goodwill balance at January 1, 2012	$	713,896
	Goodwill related to 2012 acquisitions		217,817
	Purchase price adjustments for acquisition of the Company		5,033
	Goodwill balance at December 31, 2012	$	936,746
	Goodwill related to 2012 acquisition		844
	Goodwill related to 2013 acquisition		46,617
	Goodwill balance at December 31, 2013	$	984,207
Summary of Other Intangible Assets	'
	At December 31, 2012, other intangible assets consisted of the following (dollars in thousands):
		Gross		Accumulated		Net Carrying		Weighted
		Carrying		Amortization		Amount		Average
		Amount						Useful Life
	Other intangible assets:
	Developed technology	$	176,360	$	17,490	$	158,870		10 years
	Subscriber relationships		321,469		62,852		258,617		13 years
	Trade-names		68,990		9,407		59,583		13 years
	Intellectual property		2,280		—		2,280		5 years
	IPR&D		1,340		—		1,340		—
	Total December 31, 2012	$	570,439	$	89,749	$	480,690
	At December 31, 2013, other intangible assets consisted of the following (dollars in thousands):
		Gross		Accumulated		Net Carrying		Weighted
		Carrying		Amortization		Amount		Average
		Amount						Useful Life
	Other Intangible assets:
	Developed technology	$	183,201	$	36,195	$	147,006		10 years
	Subscriber relationships		346,506		138,297		208,209		13 years
	Trade-names		69,202		20,633		48,569		13 years
	Intellectual property		2,820		464		2,356		8 years
	IPR&D		—		—		—		—
	Total December 31, 2013	$	601,729	$	195,589	$	406,140
Summary of Expected Future Amortization of Other Intangible Assets	'
	At December 31, 2013, the expected future amortization of the other intangible assets, was approximately as follows (dollars in thousands):
	Year Ending December 31,	Amount
	2014	$	92,000
	2015		71,000
	2016		57,000
	2017		46,000
	2018		37,000
	Thereafter		103,000
	Total	$	406,000

Notes_Payable_Tables

Notes Payable (Tables)	12 Months Ended
	Dec. 31, 2013
Schedule of Notes Payable	'
	At December 31, 2012 and 2013, notes payable consisted of the following (dollars in thousands):
		December 31,			December 31,
		2012			2013
	LIBOR First Lien term loan	$	800,000		$	1,047,375
	LIBOR Second Lien term loan		315,000			—
	LIBOR Revolver loan		15,000			—
		$	1,130,000		$	1,047,375
Summary of Interest Rates and Interest Expense	'
	The following table provides a summary of interest rates and interest expense for the Predecessor and Successor Periods in 2011, and the years ended December 31, 2012 and 2013, (dollars in thousands):
		Period from January 1,			Period from December 21,			Year Ended			Year Ended
		2011 through			2011 through December 31,			December 31, 2012			December 31,
		December 21,			2011						2013
		2011
	Interest rate—LIBOR		8.00%-11.25	%		7.75	%		6.25%-11.00	%		5.00%-10.25	%
	Interest rate—reference		8.75% to 12.25	%		8.5	%		7.75% to 11.00	%		6.25%-10.25	%
	Non-refundable fee—unused facility		0.5	%		0.5	%		0.5	%		0.5	%
	Interest expense and service fees	$	24,435		$	757		$	52,995		$	85,655
	Amortization of deferred financing fees	$	23,781		$	98		$	4,466		$	260
	Amortization of net present value of deferred consideration	$	—		$	—		$	1,093		$	1,701
	Loss on extinguishment of term loans	$	—		$	—		$	67,611		$	10,833
Notes Payable, Other Payables [Member]	'
Summary of Maturity of the Notes Payable	'
	The maturity of the notes payable at December 31, 2013 is as follows (dollars in thousands):
		Amount
	2014	$	10,500
	2015		10,500
	2016		10,500
	2017		10,500
	2018		10,500
	2019		994,875
	Total	$	1,047,375

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Summary of the Company's Outstanding Shares of Common Stock	'
	The following table provides a summary of the Company’s outstanding shares of common stock as of December 31, 2013:
		Outstanding
		Shares
	Common shares issued—prior to initial public offering		103,695,318
	Common shares issued at initial public offering		21,049,004
	Restricted stock awards granted as vested at initial public offering		22,222
	Shares of common stock outstanding at December 31, 2013		124,766,544

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2013
Summary of Stock Award Activity for Time Based Vesting Stock Awards and Performance Based Vesting Stock Awards that were Granted Prior to the Company's Initial Public Offering	'
	The following tables present a summary of the stock-based awards activity for the years ended December 31, 2012 and 2013 for time-based vesting stock awards and performance-based vesting stock awards that were granted prior to the Company’s initial public offering (dollars in thousands):
			Time-Based Vesting
			Stock Awards(1)
	Granted			5,086,728
	Forfeitures			(10,762	)
	Vested			(375,879	)
	Non-Vested at December 31, 2012			4,700,087
	Granted			166,839
	Forfeitures			(17,837	)
	Vested			(4,120,756	)
	Non-Vested at December 31, 2013			728,333
			Performance-Based
			Vesting
			Stock Awards(1)
	Granted			3,418,853
	Forfeitures			(10,762	)
	Vested			—
	Non-Vested at December 31, 2012			3,408,091
	Granted			166,839
	Forfeitures			(17,916	)
	Vested			(2,828,681	)
	Non-Vested at December 31, 2013			728,333
	-1	The aggregate intrinsic value of restricted stock awards is calculated as the fair value of the common stock on December 31, 2013 of $14.18 per share.
Summary of Restricted Stock Units that were Granted in Connection with Initial Public Offering and the Non-Vested Balance	'
	In connection with the initial public offering the Company granted restricted stock units under the prior equity plan. The following table provides a summary of the restricted stock units that were granted in connection with the initial public offering under this plan and the non-vested balance as of December 31, 2013(dollars in thousands except exercise price):
			Restricted Stock Units			Weighted
						Average
						Grant Date
						Fair Value
	Granted			531,719		$	12
	Forfeitures			—			—
	Vested and unissued			(243,705	)	$	12
	Non-vested at December 31, 2013			288,014		$	12
Shares of Common Stock for Future Issuance	'
	At December 31, 2013, the Company has reserved the following shares of common stock for future issuance:
			As of
			December 31,
			2013
	Common stock options granted and outstanding			5,619,671
	Restricted stock unit awards granted and unissued			481,623
	Shares available for future grant under the 2013 stock incentive plan			11,161,556
	Total shares of authorized common stock reserved for future issuance			17,262,850
	Restricted stock awards granted and issued			737,150
	Total shares authorized to be issued under			18,000,000
	2013 Stock Incentive Plan
Restricted Stock Awards and Restricted Stock Units Granted Under 2013 Stock Incentive Plan and Non-Vested Balance	'
	The following table provides a summary of the Company’s non-vested common stock at the date of the initial public offering and new stock-based awards, consisting of restricted stock units that were granted in connection with the initial public offering as well as stock options, restricted stock awards and restricted stock units that were granted under the 2013 Stock Incentive Plan and the non-vested balance as of December 31, 2013(dollars in thousands except exercise price):
			Stock			Weighted-				Weighted-				Aggregate
			Options			Average				Average				Intrinsic
						Exercise				Remaining				Value(2)
						Price				Contractual Term
										(In Years)
	Granted—October 25, 2013			5,623,671		$	12
	Exercised			—		$	—							$	—
	Canceled			(4,000	)	$	12
	Outstanding at December 31, 2013			5,619,671		$	12				9.8			$	12,251
	Exercisable at December 31, 2013			113,714		$	12				9.8			$	248
	Vested and expected to vest at December 31, 2013(1)			5,504,052		$	12				9.8			$	11,999
	-1	This represents the number of vested options as of December 31, 2013 plus the number of unvested options outstanding as of December 31, 2013, which has been reduced using an estimated forfeiture rate.
	-2	The aggregate intrinsic value was calculates based on the positive difference between the estimated fair value of the Company’s common stock on December 31, 2013 of $14.18 per share, or the date of exercise as appropriate, and the exercise price of the underlying options.
Stock Incentive Plan	'
	The assumptions used to compute stock-based compensation expense for awards granted under the 2013 Stock Incentive Plan are as follows:
			2013
	Risk-free interest rate			1.9	%
	Expected volatility			60	%
	Expected life (in years)			6.25
	Expected dividend yield			—
Summary of Total Stock-Based Compensation Expense	'
	The following table presents total stock-based compensation expense for the time-based stock awards, performance—based stock awards and awards issued under the 2013 Stock Incentive Plan included in the Company’s consolidated statement of operations and comprehensive loss (in thousands):
			Predecessor					Successor
			Period from					Period from				Year Ended
			January 1					December 22				December 31,
			through					through				2012
			December 11,					December 31,
			2011					2011								Year Ended
																December 31,
																2013
	Cost of revenue		$	—				$	—			$	26			$	126
	Sales and marketing			—					—				266				459
	Engineering and development			—					—				133				267
	General and administrative			1,000					—				1,883				9,911
	Total operating expense			1,000					—				2,308				10,763
Restricted Stock [Member]	'
Restricted Stock Awards and Restricted Stock Units Granted Under 2013 Stock Incentive Plan and Non-Vested Balance	'
	Weighted
	Average
	Grant Date
	Fair Value
	Granted			741,150		$	12
	Vested			(22,222	)	$	12
	Canceled			(4,000	)
	Unvested at December 31, 2013			714,928		$	12
	-1	The aggregate intrinsic value of restricted stock awards is calculated as the fair value of the common stock on December 31, 2013 of $14.18 per share.
Restricted Stock Units (RSUs) [Member]	'
Restricted Stock Awards and Restricted Stock Units Granted Under 2013 Stock Incentive Plan and Non-Vested Balance	'
			Restricted Stock Units			Weighted
						Average
						Grant Date
						Fair Value
	Granted			481,623			12
	Vested and unissued			(20,067	)		12
	Canceled			—			—
	Unvested at December 31, 2013			461,556		$	12

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Components of Income/Loss Before Income Taxes	'
	The domestic and foreign components of loss before income taxes for the periods presented (dollars in thousands):
		Year Ended
		December 31,			December 31,
		2012			2013
	United States	$	(216,478	)	$	(158,481	)
	Foreign		—			(2,894	)
	Total loss before income taxes	$	(216,478	)	$	(161,375	)
Components of Income Taxes Benefit and Expenses	'
	The components of the provision (benefit) for income taxes consisted of the following (dollars in thousands):
		Predecessor					Successor
		Period from					Period from			Year Ended			Year Ended
		January 1,					December 22,			December 31,			December 31,
		2011 through					2011 through			2012			2013
		December 21,					December 31,
		2011					2011
	Current:
	U.S. federal	$	—				$	—		$	—		$	—
	State		126					10			407			267
	Foreign		—					—			—			914
	Total current provision		126					10			407			1,181
	Deferred:
	U.S. federal		(23,112	)				(2,240	)		(64,295	)		(50,007	)
	State		(5,482	)				(516	)		(13,315	)		(8,852	)
	Foreign		—					—			—			(1,590	)
	Change in valuation allowance		28,594					—			—			55,672
	Total deferred provision		—					(2,756	)		(77,610	)		(4,777	)
	Total expense (benefit)	$	126				$	(2,746	)	$	(77,203	)	$	(3,596	)
Reconciliation of Statutory Federal Rate	'
	The following table presents a reconciliation of the statutory federal rate, and our effective tax rate, for the periods presented:
		Year Ended
		December 31,			December 31,
		2012			2013
	U.S. federal taxes at statutory rate		34	%		34	%
	State income taxes, net of federal benefit		3.6			3.2
	Permanent differences		(2.5	)		(2.1	)
	Foreign rate differential					(0.2	)
	Change in valuation allowance—US					(34.0	)
	Change in valuation allowance—foreign					(0.5	)
	Rate change		0.4			0.4
	Other		0.2			1.4
	Total		35.7	%		2.2	%
Components of the Company's Deferred Income Tax Assets and Liabilities	'
	The significant components of the Company’s deferred income tax assets and liabilities as of December 31, 2012 and December 31, 2013 are as follows (in thousands):
		2012			2013
	Deferred income tax assets:
	Net operating loss carry forward	$	56,398		$	87,784
	Other		330			1,598
	Deferred compensation		387			556
	Deferred revenue		9,127			11,622
	Other reserves		9,971			5,848
	Stock-based compensation		—			2,788
	Total deferred income tax assets		76,213			110,196
	Deferred income tax liabilities:
	Purchased intangible assets		(85,836	)		(56,848	)
	Goodwill		(4,679	)		(10,736	)
	Property and equipment		(1,184	)		(16	)
	Total deferred income tax liabilities		(91,699	)		(67,600	)
	Valuation allowance		—			(55,786	)
	Net deferred income tax assets/(liabilities)	$	(15,486	)	$	(13,190	)

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Summary of Future Minimum Annual Rental Payments Under these Leases	'
	The following table outlines future minimum annual rental payments under these leases at December 31, 2013:
	Year Ending December 31,	Amount (in thousands)
	2014	$	8,362
	2015		7,901
	2016		6,558
	2017		5,988
	2018		3,904
	Thereafter		15,441
	Total minimum lease payments	$	48,154

Quarterly_Financial_Data_unaud1

Quarterly Financial Data (unaudited) (Tables)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]	'
Schedule of Condensed Income Statement	'
		For the three months ended:
		March 31,			June 30,			Sept. 30,			Dec. 31,			March 31,			June 30,			Sept. 30,			Dec. 31,
		2012			2012			2012			2012			2013			2013			2013			2013
	Revenue	$	41,293		$	50,475		$	83,353		$	117,035		$	122,741		$	128,222		$	132,913		$	136,420
	Gross profit		2,792			8,409			13,861			29,915			35,533			40,250			45,748			48,862
	Loss from operations		(21,418	)		(20,186	)		(25,140	)		(23,603	)		(12,234	)		(10,880	)		(4,335	)		(35,599	)
	Net loss attributable to Endurance International Group Holdings, Inc.		(18,765	)		(20,251	)		(27,692	)		(72,590	)		(21,728	)		(42,958	)		(27,027	)		(67,774	)
	Basic and diluted net loss per share attributable to Endurance International Group Holdings, Inc.	$	(0.19	)	$	(0.21	)	$	(0.29	)	$	(0.75	)	$	(0.22	)	$	(0.44	)	$	(0.28	)	$	(0.57	)

Nature_of_Business_Additional_

Nature of Business - Additional Information (Detail) (USD $)	0 Months Ended		12 Months Ended
In Millions, except Share data, unless otherwise specified	Oct. 30, 2013	Oct. 23, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 22, 2011	Dec. 31, 2010
Organization Consolidation And Presentation Of Financial Statements [Abstract]	'	'	'	'	'	'
Stock issued during period, shares, stock splits	'	105,187.36	105,187.36	'	'	'
Common stock	21,051,000	105,187,363	124,788,853	105,187,363	105,187,363	'
Common stock, shares outstanding	'	105,187,363	124,766,544	96,745,992	'	'
Common stock, shares authorized	'	500,000,000	500,000,000	500,000,000	'	2,500
Common stock, par value	'	$0.00	$0.00	$0.00	'	$0.01
Preferred stock, par value	'	$0.00	$0.00	$0.00	'	$0.01
Preferred stock, shares authorized	'	5,000,000	5,000,000	5,000,000	'	275,000
Common stock per share	$12	'	'	'	'	'
Gross proceeds from initial public offering after deducting underwriting discounts, commissions and estimated expenses payable	$252.60	'	'	'	'	'
Net proceeds from initial public offering after deducting underwriting discounts, commissions and estimated expenses payable	$232.10	'	'	'	'	'

Summary_of_Significant_Account3

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)

0 Months Ended

1 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

Oct. 23, 2013

Oct. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 21, 2011

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Investment

Segment

Investment

Minimum [Member]

Maximum [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Investment

Accounting Policies [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of reportable segments

'

'

1

'

'

'

'

'

'

'

'

'

'

Cash and cash equivalents maturity Period

'

'

'Three months or less

'

'

'

'

'

'

'

'

'

'

Percentage of total revenue

'

'

10.00%

10.00%

'

'

'

'

'

10.00%

10.00%

'

'

Software development cost capitalized

'

'

$1,200,000

$0

'

'

'

'

'

'

'

'

'

Number of minority investments

'

1

'

2

'

'

'

'

'

'

'

'

'

Percentage of voting Interest

'

'

'

'

'

25.00%

50.00%

'

'

'

'

'

'

Impairment charges

'

2,600,000

'

'

'

'

'

'

'

'

'

'

'

Percentage of voting Interest

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

Percentage of voting Interest

'

40.00%

'

'

'

'

'

'

'

'

'

'

'

Impairment

'

'

0

0

'

'

'

'

'

'

'

0

'

Carrying value of the reporting unit's net assets

'

'

600.00%

600.00%

'

'

'

'

'

'

'

'

'

Goodwill

'

'

984,207,000

936,746,000

713,896,000

'

'

'

'

'

'

'

'

Impairment charges

'

'

0

0

'

'

'

'

'

'

'

'

'

Impairment loss charged to expense

'

'

0

0

'

'

'

'

0

0

0

'

'

Contract service period

'

'

'36 months

'

'

'

'

'

'

'

'

'

'

Sales and marketing costs

'

'

117,700,000

83,100,000

'

'

'

'

'

54,900,000

1,500,000

'

'

Foreign currency transaction gains (losses)

'

'

1,200,000

'

'

'

'

0

'

0

0

'

0

Unrecognized tax benefits

'

'

0

0

'

'

'

'

'

0

0

'

'

Interest expense and penalties

'

'

0

0

'

'

'

'

'

0

0

'

'

Stock issued during period, shares, stock splits

105,187.36

'

105,187.36

'

'

'

'

'

'

'

'

'

'

Non-vested shares excluded

'

'

8,822,924

8,108,177

0

'

'

'

'

'

'

'

'

Indemnification obligations

'

'

0

'

'

'

'

'

'

'

'

'

'

Indemnification obligations claims outstanding

'

'

$0

'

'

'

'

'

'

'

'

'

'

Summary_of_Significant_Account4

Summary of Significant Accounting Policies - Summary of Estimated Useful Lives (Detail)	12 Months Ended
	Dec. 31, 2013
Software [Member]	'
Property, Plant and Equipment [Line Items]	'
Property, plant and equipment useful life	'2 years
Computers and Office Equipment [Member]	'
Property, Plant and Equipment [Line Items]	'
Property, plant and equipment useful life	'3 years
Furniture and Fixtures [Member]	'
Property, Plant and Equipment [Line Items]	'
Property, plant and equipment useful life	'5 years
Leasehold Improvements [Member]	'
Property, Plant and Equipment [Line Items]	'
Leasehold improvements	'Shorter of useful life or remaining term of the lease

Summary_of_Significant_Account5

Summary of Significant Accounting Policies - Potentially Dilutive Shares of Common Stock Excluded from the Diluted Weighted-average Number of Shares of Common Stock Outstanding (Detail) (USD $)	0 Months Ended	3 Months Ended								12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Accounting Policies [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Net loss attributable to Endurance International Group Holdings, Inc.	($4,381)	($67,774)	($27,027)	($42,958)	($21,728)	($72,590)	($27,692)	($20,251)	($18,765)	($159,187)	($139,298)
Net loss per share attributable to Endurance International Group Holdings, Inc.: Basic and diluted	($0.05)	($0.57)	($0.28)	($0.44)	($0.22)	($0.75)	($0.29)	($0.21)	($0.19)	($1.55)	($1.44)
Weighted average number of shares of common stock used to compute net loss per share attributable to Endurance International Group Holdings, Inc.: Basic and diluted	96,370,134	'	'	'	'	'	'	'	'	102,698,773	96,562,674

Acquisitions_Additional_Inform

Acquisitions - Additional Information (Detail) (USD $)

0 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

0 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

Jun. 06, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 22, 2011

Jul. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 21, 2011

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Jul. 13, 2012

Dec. 31, 2013

Dec. 31, 2012

Jul. 13, 2012

Dec. 31, 2013

Jul. 13, 2012

Dec. 31, 2013

Jul. 13, 2012

Dec. 31, 2013

Sep. 17, 2012

Dec. 31, 2012

Sep. 17, 2012

Dec. 31, 2013

Sep. 17, 2012

Dec. 31, 2013

Sep. 17, 2012

Dec. 31, 2013

Sep. 17, 2012

Jul. 22, 2011

Dec. 31, 2011

Jul. 22, 2011

Jul. 22, 2011

Dec. 31, 2013

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Oct. 31, 2013

Sep. 30, 2013

Jun. 06, 2013

Dec. 31, 2013

Series D Preferred Stock [Member]

Developed Technology [Member]

Developed Technology [Member]

Trade-Names [Member]

Trade-Names [Member]

Subscriber Relationships [Member]

Subscriber Relationships [Member]

IPR&D [Member]

IPR&D [Member]

Predecessor [Member]

Predecessor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

HostGator [Member]

HostGator [Member]

HostGator [Member]

HostGator [Member]

HostGator [Member]

HostGator [Member]

HostGator [Member]

HostGator [Member]

HostGator [Member]

Homestead Technologies Inc [Member]

Homestead Technologies Inc [Member]

Homestead Technologies Inc [Member]

Homestead Technologies Inc [Member]

Homestead Technologies Inc [Member]

Homestead Technologies Inc [Member]

Homestead Technologies Inc [Member]

Homestead Technologies Inc [Member]

Homestead Technologies Inc [Member]

Dotster, Inc. [Member]

Dotster, Inc. [Member]

Dotster, Inc. [Member]

Dotster, Inc. [Member]

Dotster, Inc. [Member]

Sponsor Acquisition [Member]

Sponsor Acquisition [Member]

Sponsor Acquisition [Member]

Sponsor Acquisition [Member]

Sponsor Acquisition [Member]

Sponsor Acquisition [Member]

Sponsor Acquisition [Member]

Other Acquisitions [Member]

Other Acquisitions [Member]

Other Acquisitions [Member]

Other Acquisitions [Member]

JDI Backup Limited [Member]

JDI Backup Limited [Member]

Developed Technology [Member]

Developed Technology [Member]

Trade-Names [Member]

Trade-Names [Member]

Subscriber Relationships [Member]

Subscriber Relationships [Member]

Developed Technology [Member]

Developed Technology [Member]

Trade-Names [Member]

Trade-Names [Member]

Subscriber Relationships [Member]

Subscriber Relationships [Member]

IPR&D [Member]

Series D Preferred Stock [Member]

Predecessor [Member]

Escrow [Member]

Escrow [Member]

Series E Preferred Stock [Member]

Developed Technology [Member]

Trade-Names [Member]

Subscriber Relationships [Member]

Successor [Member]

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payment related to contingent consideration and transaction costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$5,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Adjustment to fair value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Acquisition amount paid by cash

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

227,300,000

'

'

'

'

'

'

'

'

60,400,000

'

'

'

'

'

'

'

'

62,900,000

'

'

5,300,000

'

472,200,000

'

'

'

'

'

'

5,400,000

'

'

'

8,800,000

'

Cash received back from escrow account

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash balance paid to the seller

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Direct transaction expenses related to acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,400,000

'

'

'

'

'

'

'

'

1,500,000

'

'

'

'

'

'

'

'

'

'

300,000

'

'

'

'

'

'

'

'

3,600,000

'

'

'

'

'

'

Issued of series D preferred stock, shares

'

'

'

'

'

38,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

38,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Value of series D preferred stock

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

38,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Membership interests

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

Common stock

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,000

'

'

'

'

'

'

'

'

'

'

'

'

Term loan

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

350,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate purchase price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

299,800,000

'

'

'

'

'

'

'

'

61,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

683,100,000

'

'

'

'

'

'

'

13,500,000

'

'

'

31,000,000

Indebtedness amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

305,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Issued of series E preferred stock

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

150,000

'

'

'

'

'

'

'

'

'

'

Value of series E preferred stock

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

150,000,000

'

'

'

'

'

'

'

'

'

'

Deemed capital contribution

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

55,100,000

'

'

'

'

'

'

'

'

'

'

'

'

Deferred consideration on acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

35,029,000

'

55,635,000

7,237,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,700,000

'

'

'

'

'

'

'

'

'

'

'

Percentage of voting securities

'

'

'

'

89.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intangible assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,600,000

'

16,900,000

'

97,600,000

'

'

'

7,700,000

'

7,600,000

'

41,600,000

'

1,300,000

'

'

'

'

'

'

'

'

167,000,000

44,300,000

177,100,000

'

'

'

'

'

'

'

Useful life of intangible asset

'

'

'

'

'

'

'10 years

'10 years

'13 years

'13 years

'13 years

'13 years

'

'

'

'

'

'

'

'

'

'

'

'10 years

'

'10 years

'

'20 years

'

'

'

'5 years

'

'10 years

'

'10 years

'

'

'

'

'

'

'

'

'

'10 years

'15 years

'10 years

'

'

'

'

'

'

'

Working capital adjustment paid

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

800,000

'

'

'

'

'

'

'

1,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional purchase consideration on installments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

24,200,000

49,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional purchase consideration aggregate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

73,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Future cash consideration

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

23,000,000

47,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred interest amount included in additional purchase consideration

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred interest payment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,590,000

1,093,000

'

1,600,000

1,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Future compensation to employees

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,000,000

2,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred consideration

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

24,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,800,000

'

'

'

'

'

Compensation expense

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-lived intangible assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

116,060,000

'

'

'

'

'

'

'

'

58,240,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7,800,000

'

2,000,000

'

28,500,000

Goodwill

'

984,207,000

936,746,000

713,896,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

189,296,000

'

'

'

'

'

'

'

'

22,063,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,500,000

'

8,900,000

'

37,700,000

Deferred tax asset

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,067,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

500,000

'

'

'

'

Deferred revenue

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

16,558,000

'

'

'

'

'

'

'

'

2,337,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,300,000

'

'

'

9,300,000

Revenue from company acquisitions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

75,600,000

'

'

'

'

Aggregate amount deferred and earn-out payments

'

1,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance of earn-out payments

'

1,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net increase in deferred and earn-out payments

'

100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill deductible for tax

'

100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred consideration payable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,500,000

'

'

'

'

'

Contingent amount payable

'

1,655,000

1,383,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,000,000

2,700,000

'

'

Estimated earn-out payment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

700,000

'

'

'

'

'

Interest in privately-held company

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

17.50%

'

Exercised call option

22,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Minimum exercise of the put option

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

24,000,000

Estimated value of the redeemable non-controlling interest

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20,600,000

Property and equipment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

315,000

'

'

'

'

'

'

'

'

1,287,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

300,000

Other liabilities

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,600,000

Deferred tax liabilities

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

17,558,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,900,000

Negative net working capital

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,100,000

Revenue

'

$7,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Acquisitions_Summary_of_Prelim

Acquisitions - Summary of Preliminary Purchase Price Allocation on the Acquisition Date (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jul. 13, 2012	Sep. 17, 2012
In Thousands, unless otherwise specified				HostGator [Member]	Homestead Technologies Inc [Member]
Schedule Of Business Acquisitions Purchase Price Allocation [Line Items]	'	'	'	'	'
Cash	'	'	'	$593	'
Accounts receivable	'	'	'	512	1,575
Prepaid expenses and other assets	'	'	'	2,762	399
Property and equipment	'	'	'	315	1,287
Intangible assets	'	'	'	116,060	58,240
Investment	'	'	'	10,000	'
Deferred tax asset	'	'	'	2,067	'
Goodwill	984,207	936,746	713,896	189,296	22,063
Total assets acquired	'	'	'	321,605	83,564
Accounts payable	'	'	'	147	2,178
Accrued expenses	'	'	'	5,102	'
Reserves for refunds and chargebacks	'	'	'	'	30
Deferred tax liability	'	'	'	'	17,558
Deferred revenue	'	'	'	16,558	2,337
Total liabilities assumed	'	'	'	21,807	22,103
Net assets acquired	'	'	'	$299,798	$61,461

Acquisiton_Pro_Forma_Results_I

Acquisiton - Pro Forma Results Include Amounts Derived from Historical Financial Results of Acquired Businesses (Detail) (Acquisitions 2013 [Member], USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2012
Acquisitions 2013 [Member]	'
Business Acquisition [Line Items]	'
Revenues	$415,209
Net loss attributable to common stockholders	($125,021)
Net loss per share attributable to common stockholders basic and diluted	($1.29)

Fair_Value_Measurements_Additi

Fair Value Measurements - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Change in fair value of the earn-out consideration	$0.30

Fair_Value_Measurements_Basis_

Fair Value Measurements - Basis of Fair Value Measurements (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financial liabilities:	'	'
Contingent earn-out consideration	$1,655	$1,383
Total financial liabilities	1,655	1,383
Quoted Prices in Active Markets for Identical Items (Level 1) [Member]	'	'
Financial liabilities:	'	'
Contingent earn-out consideration	'	'
Total financial liabilities	'	'
Significant Other Observable Inputs (Level 2) [Member]	'	'
Financial liabilities:	'	'
Contingent earn-out consideration	'	'
Total financial liabilities	'	'
Significant Unobservable Inputs (Level 3) [Member]	'	'
Financial liabilities:	'	'
Contingent earn-out consideration	1,655	1,383
Total financial liabilities	$1,655	$1,383

Property_and_Equipment_Compone

Property and Equipment - Components of Property and Equipment (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Property and equipment-at cost	$74,884	$41,261
Less accumulated depreciation	-25,129	-6,657
Property and equipment-net	49,715	34,604
Software [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment-at cost	4,503	937
Computers and Office Equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment-at cost	59,201	33,314
Furniture and Fixtures [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment-at cost	3,715	1,570
Leasehold Improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment-at cost	6,033	4,692
Construction in Process [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment-at cost	$1,392	$748

Property_and_Equipment_Additio

Property and Equipment - Additional Information (Detail) (USD $)	0 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 21, 2011
Property Plant And Equipment [Abstract]	'	'	'	'
Depreciation expense	$114	$18,615	$6,869	$3,481

Goodwill_and_Other_Intangible_2

Goodwill and Other Intangible Assets - Changes in Goodwill Balances (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Goodwill [Line Items]	'	'
Goodwill, beginning balance	'	$713,896
Purchase price adjustments for acquisition of the Company	'	5,033
Goodwill, ending balance	984,207	936,746
2012 Acquisitions [Member]	'	'
Goodwill [Line Items]	'	'
Goodwill related to acquisitions	844	217,817
Acquisitions 2013 [Member]	'	'
Goodwill [Line Items]	'	'
Goodwill related to acquisitions	$46,617	'

Goodwill_and_Other_Intangible_3

Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended			0 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 21, 2011	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012
				Predecessor [Member]	Successor [Member]	Successor [Member]	Successor [Member]
Finite-Lived Intangible Assets [Line Items]	'	'	'	'	'	'	'
Impairment charges	'	$0	$0	'	'	$0	'
Facts and circumstances leading to goodwill impairment	'In the three months ended December 31, 2013, the Company completed its annual impairment test of goodwill and other indefinite-lived intangible assets and determined that there were no indicators of impairment.	'	'	'	'	'	'
Amortization expense included in cost of revenue	'	$105,800,000	$88,100,000	$50,443,000	$1,735,000	$105,915,000	$88,118,000

Goodwill_and_Other_Intangible_4

Goodwill and Other Intangible Assets - Summary of Other Intangible Assets (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	$601,729	$570,439
Accumulated Amortization	195,589	89,749
Net Carrying Amount	406,140	480,690
Developed Technology [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	183,201	176,360
Accumulated Amortization	36,195	17,490
Net Carrying Amount	147,006	158,870
Weighted Average Useful Life	'10 years	'10 years
Subscriber Relationships [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	346,506	321,469
Accumulated Amortization	138,297	62,852
Net Carrying Amount	208,209	258,617
Weighted Average Useful Life	'13 years	'13 years
Trade-Names [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	69,202	68,990
Accumulated Amortization	20,633	9,407
Net Carrying Amount	48,569	59,583
Weighted Average Useful Life	'13 years	'13 years
Intellectual Property [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	2,820	2,280
Accumulated Amortization	464	'
Net Carrying Amount	2,356	2,280
Weighted Average Useful Life	'8 years	'5 years
IPR&D [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	'	1,340
Accumulated Amortization	'	'
Net Carrying Amount	'	$1,340
Weighted Average Useful Life	'	'

Goodwill_and_Other_Intangible_5

Goodwill and Other Intangible Assets - Summary of Expected Future Amortization of Other Intangible Assets (Detail) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Goodwill And Intangible Assets Disclosure [Abstract]	'
2014	$92,000
2015	71,000
2016	57,000
2017	46,000
2018	37,000
Thereafter	103,000
Total	$406,000

Investments_Additional_Informa

Investments - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended			1 Months Ended
	Oct. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Oct. 31, 2013	Dec. 31, 2013	Jun. 06, 2013	Dec. 31, 2013	Dec. 31, 2013
				Investment One [Member]	HostGator [Member]	HostGator [Member]	Investment Two [Member]	Minimum [Member]	Maximum [Member]
							JDI Backup Limited [Member]
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'	'	'
Percentage of acquisition	'	'	'	50.00%	'	'	17.50%	'	'
Amount of investment for acquisition	'	$6,500,000	$10,200,000	'	'	$10,000,000	$8,800,000	'	'
Ownership interest percentage	'	'	'	'	10.00%	'	'	'	'
Interest note receivable	1,500,000	'	'	'	'	'	'	'	'
Ownership interest	40.00%	'	'	'	'	'	'	'	'
Impairment on the remaining investment	2,600,000	'	'	'	'	'	'	'	'
Voting interest	'	'	'	'	'	'	'	20.00%	50.00%
Recognized net income	'	$500,000	'	'	'	'	'	'	'
Proportionate share exceed of the company's consolidated assets or income	'	10.00%	10.00%	'	'	'	'	'	'

Notes_Payable_Additional_Infor

Notes Payable - Additional Information (Detail) (USD $)

1 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

Nov. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 21, 2011

Dec. 21, 2011

Dec. 21, 2011

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Jul. 13, 2012

Dec. 31, 2013

Dec. 31, 2012

Nov. 30, 2013

Apr. 22, 2012

Jul. 13, 2012

Dec. 31, 2013

Jul. 13, 2012

Aug. 09, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Jul. 13, 2012

Dec. 12, 2013

Nov. 09, 2012

Dec. 31, 2013

Dec. 31, 2012

Mar. 28, 2013

Dec. 12, 2013

Nov. 09, 2012

Nov. 30, 2013

Dec. 31, 2012

Dec. 12, 2013

Nov. 09, 2012

Aug. 09, 2013

Dec. 31, 2013

Nov. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 22, 2011

Dec. 22, 2011

Dec. 22, 2011

Apr. 22, 2012

Apr. 22, 2012

Dec. 31, 2013

Nov. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

HostGator [Member]

HostGator [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

July Financing Amendment [Member]

November 2012 Financing Amendment [Member]

November 2012 Financing Amendment [Member]

Revolving Credit Facility [Member]

April 2012 Term Loan [Member]

April 2012 Term Loan [Member]

April 2012 Term Loan [Member]

Second Lien Credit Amendment New Term Loan [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Second Lien Term Loan [Member]

November 2012 First Lien [Member]

November 2012 First Lien [Member]

November 2012 First Lien [Member]

November 2012 First Lien [Member]

November 2012 Second Lien [Member]

November 2012 Second Lien [Member]

November 2012 Second Lien [Member]

November 2012 Second Lien [Member]

August 2013 First Lien [Member]

August 2013 First Lien [Member]

First Lien [Member]

First Lien [Member]

First Lien [Member]

First Lien [Member]

First Lien [Member]

Second Lien [Member]

Second Lien [Member]

Second Lien [Member]

December 2011 Term Loan [Member]

December 2011 Term Loan [Member]

December 2011 Term Loan [Member]

December 2011 Term Loan [Member]

December 2011 Term Loan [Member]

Amended Revolving Credit Facility [Member]

Amended Revolving Credit Facility [Member]

November 2012 Financing Amendment and August 2013 First Lien [Member]

LIBOR First Lien Term Loan [Member]

LIBOR First Lien Term Loan [Member]

LIBOR First Lien Term Loan [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

July Financing Amendment [Member]

November 2012 Financing Amendment [Member]

July Financing Amendment [Member]

London Interbank Offered Rate (LIBOR) [Member]

July Financing Amendment [Member]

November 2012 Financing Amendment [Member]

November 2012 Financing Amendment [Member]

November 2012 Financing Amendment [Member]

November 2012 Financing Amendment [Member]

November 2012 Financing Amendment [Member]

November 2012 Financing Amendment [Member]

November 2012 Financing Amendment [Member]

November 2012 Financing Amendment [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

Term Loan [Member]

Revolving Credit Facility [Member]

Minimum [Member]

Maximum [Member]

Proforma Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount of First Lien facility

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1,047,400,000

$1,115,000,000

'

'

'

'

'

'

$668,300,000

'

'

'

'

$15,000,000

'

'

'

$140,000,000

'

'

'

'

$315,000,000

'

'

'

'

$796,000,000

$883,800,000

'

'

'

'

'

'

'

'

'

$305,000,000

'

'

'

'

'

'

'

'

Interest at LIBOR based rates

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7.75%

5.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6.25%

10.25%

6.25%

'

10.25%

7.75%

'

'

'

'

'

'

'

'

'

'

'

Face amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

535,000,000

'

'

140,000,000

'

'

'

'

'

'

'

'

'

'

'

800,000,000

'

'

'

315,000,000

'

'

'

'

'

'

'

'

'

'

'

'

385,000,000

350,000,000

35,000,000

'

'

'

'

'

'

Debt instrument reference rate

'

5.25%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5.25%

'

'

'

'

'

4.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5.25%

'

'

'

'

'

'

'

'

'

'

Federal funds effective rate

'

0.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.50%

'

'

'

'

'

0.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.50%

'

'

'

'

'

'

'

'

'

'

Adjusted LIBOR rate

'

2.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.25%

'

'

'

'

'

2.25%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.50%

'

'

'

'

'

'

'

'

'

'

Debt instrument LIBOR rate

5.00%

6.25%

'

'

'

'

'

8.00%

11.25%

'

'

'

'

7.75%

5.00%

6.25%

10.25%

11.00%

'

'

'

'

'

'

'

'

'

'

'

'

6.25%

'

'

'

'

'

5.00%

'

'

'

'

9.00%

'

'

'

'

'

'

'

'

'

9.50%

'

'

6.25%

'

'

'

'

'

'

'

'

'

'

Debt instrument basis spread on LIBOR rate

1.25%

1.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.50%

'

'

'

'

'

1.25%

'

'

'

'

1.25%

'

'

'

'

'

'

'

'

'

1.50%

'

'

1.50%

'

'

'

'

'

'

'

'

'

'

Additional Financing Related Costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

21,400,000

'

'

'

'

'

'

'

'

'

'

Amortization period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'6 years

'6 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'6 years

'

'

'

'

'

'

'

'

'

Amortization

'

'

'

'

'

'

23,781,000

'

'

97,000

2,768,000

43,405,000

'

'

'

'

'

'

'

'

'

'

4,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100,000

'

'

'

'

'

'

300,000

'

'

'

Increase in the initial revolving credit commitment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20,000,000

55,000,000

'

'

'

'

Debt modification

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Term loan repaid

'

'

'

'

'

'

193,840,000

'

'

305,000,000

1,212,625,000

1,160,000,000

'

'

'

'

'

'

'

'

'

'

'

'

349,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional repayment of term loan

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

135,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

90,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

166,200,000

'

'

Increase in revolver amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate principal amount not to exceed

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

125,000,000

'

'

'

'

'

'

'

'

75,000,000

'

85,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Third-party costs incurred to modify the debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional financing cost

'

'

'

'

'

'

19,160,000

'

'

21,374,000

12,552,000

52,890,000

'

'

'

'

'

'

'

'

'

'

'

'

'

12,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non refundable fee

'

0.50%

'

'

'

'

0.50%

'

'

0.50%

0.50%

0.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Third-party financing related costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maturity date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9-Nov-19

'

'

'

9-May-20

'

'

'

'

9-Nov-19

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maturity date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

22-Dec-16

'

'

'

22-Dec-16

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mandatory repayment of loan

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,000,000

'

'

'

'

'

'

'

'

2,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mandatory repayments on term loan

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

315,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Repayment of line of credit

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

37,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

First lien term loan outstanding

'

1,047,375,000

1,130,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,050,000,000

1,047,375,000

800,000,000

Reduction in Overall indebtedness

148,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revolving Credit Facility increase in borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

40,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

LIBOR based interest rate reduced

4.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Third-party financing related costs

400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Greater of the libor rate

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest expense

'

$85,700,000

$53,000,000

$1,700,000

$1,200,000

$24,400,000

$50,297,000

'

'

$855,000

$98,449,000

$126,165,000

$800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Notes_Payable_Schedule_of_Note

Notes Payable - Schedule of Notes Payable (Detail) (USD $)	Dec. 31, 2013	Nov. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Proforma Debt Instrument [Line Items]	'	'	'
Notes payable	$1,047,375	'	$1,130,000
LIBOR First Lien Term Loan [Member]	'	'	'
Proforma Debt Instrument [Line Items]	'	'	'
Notes payable	1,047,375	1,050,000	800,000
LIBOR Second Lien Term Loan [Member]	'	'	'
Proforma Debt Instrument [Line Items]	'	'	'
Notes payable	'	'	315,000
LIBOR Revolver Loan [Member]	'	'	'
Proforma Debt Instrument [Line Items]	'	'	'
Notes payable	'	'	$15,000

Notes_Payable_Summary_of_Matur

Notes Payable - Summary of Maturity of the Notes Payable (Detail) (Notes Payable, Other Payables [Member], USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Notes Payable, Other Payables [Member]	'
Debt Instrument [Line Items]	'
2014	$10,500
2015	10,500
2016	10,500
2017	10,500
2018	10,500
2019	994,875
Total	$1,047,375

Notes_Payable_Schedule_of_Inte

Notes Payable - Schedule of Interest Rates and Interest Expense (Detail) (USD $)

1 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Nov. 30, 2013

Dec. 31, 2013

Dec. 21, 2011

Dec. 21, 2011

Dec. 21, 2011

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Proforma Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate-LIBOR

5.00%

6.25%

'

8.00%

11.25%

'

'

'

7.75%

5.00%

6.25%

10.25%

11.00%

Interest rate-reference

'

'

'

8.75%

12.25%

'

'

'

8.50%

6.25%

7.75%

10.25%

11.00%

Non-refundable fee-unused facility

'

0.50%

0.50%

'

'

0.50%

0.50%

0.50%

'

'

'

'

'

Interest expense and service fees

'

'

$24,435

'

'

$757

$85,655

$52,995

'

'

'

'

'

Amortization of deferred financing fees

'

'

23,781

'

'

98

260

4,466

'

'

'

'

'

Amortization of net present value of deferred consideration

'

'

'

'

'

'

1,701

1,093

'

'

'

'

'

Loss on extinguishment of term loans

'

'

'

'

'

'

$10,833

$67,611

'

'

'

'

'

Stockholders_Equity_Additional

Stockholders' Equity - Additional Information (Detail) (USD $)

0 Months Ended

1 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

Nov. 09, 2012

Apr. 20, 2012

Dec. 22, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Oct. 30, 2013

Oct. 23, 2013

Dec. 13, 2011

Oct. 31, 2011

Dec. 31, 2010

Dec. 31, 2010

Dec. 31, 2013

Dec. 31, 2010

Dec. 31, 2013

Dec. 31, 2010

Dec. 31, 2013

Jul. 31, 2011

Dec. 31, 2013

Dec. 31, 2010

Vote

Preferred Stock [Member]

Series A Preferred Stock [Member]

Series A Preferred Stock [Member]

Series C Preferred Stock [Member]

Series C Preferred Stock [Member]

Series D Preferred Stock [Member]

Series D Preferred Stock [Member]

Series E Preferred Stock [Member]

Series B Preferred Stock [Member]

Equity [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional shares of series D preferred stock, authorized

'

'

'

5,000,000

5,000,000

'

'

5,000,000

'

'

275,000

50,000

'

75,000

'

75,000

'

75,000

150,000

75,000

Preferred stock, par value

'

'

'

$0.00

$0.00

'

'

$0.00

'

'

$0.01

'

'

'

'

'

'

'

$0.01

'

Preferred stock, shares issued

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

38,000

'

'

Preferred stock shares outstanding

'

'

'

'

'

'

'

'

5,998,500

'

'

'

'

'

'

'

'

'

'

'

Common stock, shares authorized

'

'

'

500,000,000

500,000,000

'

'

500,000,000

'

'

2,500

'

'

'

'

'

'

'

'

'

Common stock, par value

'

'

'

$0.00

$0.00

'

'

$0.00

'

'

$0.01

'

'

'

'

'

'

'

'

'

Common stock, shares issued

'

'

105,187,363

124,788,853

105,187,363

'

21,051,000

105,187,363

'

'

'

'

'

'

'

'

'

'

'

'

Common stock issued amount

'

'

$507,400,000

$13,000

$11,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash contribution in net issuance cost

'

'

452,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Capital contribution in net issuance cost

'

'

55,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of vote per share

'

'

'

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

dividend rate

'

'

'

'

'

'

'

'

'

'

'

'

25.00%

'

25.00%

'

25.00%

'

12.00%

'

Preferred stock redeemed

'

150,000,000

'

'

'

'

'

'

'

65,800,000

'

'

'

'

'

'

'

'

'

'

Dividend paid

10,500,000

6,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred stock conversion price

'

'

'

1,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

General and administrative expense

'

'

'

'

$9,800,000

$5,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stockholders_Equity_Summary_of

Stockholders' Equity - Summary of the Company's Outstanding Shares of Common Stock (Detail)	12 Months Ended
	Dec. 31, 2013	Oct. 30, 2013	Oct. 23, 2013	Dec. 31, 2012	Dec. 22, 2011
Equity [Abstract]	'	'	'	'	'
Common shares issued at-prior to initial public offering	124,788,853	21,051,000	105,187,363	105,187,363	105,187,363
Common shares issued at initial public offering	21,049,004	'	'	'	'
Restricted stock awards granted as vested at initial public offering	22,222	'	'	'	'
Shares of common stock outstanding at December 31, 2013	124,766,544	'	105,187,363	96,745,992	'

StockBased_Compensation_Additi

Stock-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Vesting period	'	'4 years	'
Number of shares of common stock with accelerated vesting	'	2,167,870	'
Number of shares of common stock with modified vesting	'	3,574,637	'
Number of shares of common stock fully vested	'	2,580,271	'
Number of shares of common stock with modified vesting that vest as vesting schedule of time based stock awards	'	994,366	'
Aggregate stock-based compensation expense	'	$1.40	$0.70
Common stock issued	9.7	2.4	'
Weighted average period to recognize the unrecognized compensation expense	'	'2 years 3 months 18 days	'
Common stock	18,000,000	18,000,000	'
Shares grant	11,161,556	11,161,556	'
Stock options vest period	'	'4 years	'
Initial public offering vest	'	'4 years	'
Stock-based compensation expense	'	2.9	'
Time-Based Vesting Stock Awards [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Aggregate stock-based compensation expense	'	6.5	2.3
Performance-Based Vesting Stock Awards [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Aggregate stock-based compensation expense	'	1.4	'
Employee Stock Option [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Unrecognized compensation expense	36.8	36.8	'
Employee Stock Option [Member] | 2013 Stock Incentive Plan [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Weighted average period to recognize the unrecognized compensation expense	'	'3 years 9 months 18 days	'
Restricted Stock [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Weighted average period to recognize the unrecognized compensation expense	'	'3 years 9 months 18 days	'
Unrecognized compensation expense	8.2	8.2	'
Restricted Stock Units (RSUs) [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Weighted average period to recognize the unrecognized compensation expense	'	'2 years 2 months 12 days	'
Unrecognized compensation expense	5.5	5.5	'
Restricted Stock Units (RSUs) [Member] | 2013 Stock Incentive Plan [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Weighted average period to recognize the unrecognized compensation expense	'	'3 years 9 months 18 days	'
Restricted Stock Units (RSUs) [Member] | Prior Equity Plan [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Unrecognized compensation expense	3.5	3.5	'
Time Based Vesting Stock [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Unrecognized compensation expense	1	1	'
Performance Based Vesting Stock Awards [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Weighted average period to recognize the unrecognized compensation expense	'	'2 years 2 months 12 days	'
Unrecognized compensation expense	$0.30	$0.30	'

StockBased_Compensation_Summar

Stock-Based Compensation - Summary of Stock Award Activity for Time Based Vesting Stock Awards and Performance Based Vesting Stock Awards that were Granted Prior to the Company's Initial Public Offering (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Time-Based Vesting Stock Awards [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Non-Vested, Granted	166,839	5,086,728
Non-Vested, Forfeitures	-17,837	-10,762
Non-Vested, Vested	-4,120,756	-375,879
Non-Vested, Ending balance	728,333	4,700,087
Performance-Based Vesting Stock Awards [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Non-Vested, Granted	166,839	3,418,853
Non-Vested, Forfeitures	-17,916	-10,762
Non-Vested, Vested	-2,828,681	'
Non-Vested, Ending balance	728,333	3,408,091

Stock_Based_Compensation_Summa

Stock Based Compensation - Summary of Restricted Stock Units that were Granted in Connection with Initial Public Offering and the Non-Vested Balance (Detail) (Prior Equity Plan [Member], USD $)	12 Months Ended
	Dec. 31, 2013
Prior Equity Plan [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Restricted Stock Units, Granted	531,719
Restricted Stock Units, Forfeitures	'
Restricted Stock Units, Vested and unissued	-243,705
Restricted Stock Units, Non-vested at December 31, 2013	288,014
Weighted Average Grant Date Fair Value, Granted	$12
Weighted Average Grant Date Fair Value, Forfeitures	'
Weighted Average Grant Date Fair Value, Vested and unissued	$12
Weighted Average Grant Date Fair Value, Non-vested at December 31, 2013	$12

StockBased_Compensation_Shares

Stock-Based Compensation - Shares of Common Stock for Future Issuance (Detail)	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Common stock options granted and outstanding	5,619,671
Restricted stock unit awards granted and unissued	481,623
Shares available for future grant under the 2013 stock incentive plan	11,161,556
Total shares of authorized common stock reserved for future issuance	17,262,850
Restricted stock awards granted and issued	737,150
Total shares authorized to be issued under 2013 Stock Incentive Plan	18,000,000

StockBased_Compensation_Restri

Stock-Based Compensation - Restricted Stock Awards and Restricted Stock Units Granted Under 2013 Stock Incentive Plan and Non-Vested Balance (Detail) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Stock Options, Granted - Beginning	5,623,671
Stock Options, Exercised	'
Stock Options, Canceled	-4,000
Stock Options, Outstanding at December 31, 2013	5,619,671
Stock Options, Exercisable at December 31, 2013	113,714
Stock Options, Vested and expected to vest at December 31, 2013	5,504,052
Weighted- Average Exercise Price, Granted - October 25, 2013	$12
Weighted- Average Exercise Price, Exercised	'
Weighted- Average Exercise Price, Canceled	$12
Weighted- Average Exercise Price, Outstanding at December 31, 2013	$12
Weighted- Average Exercise Price, Exercisable at December 31, 2013	$12
Weighted- Average Exercise Price, Vested and expected to vest at December 31, 2013	$12
Weighted- Average Remaining Contractual Term, Granted - October 25, 2013	'0 years
Weighted- Average Remaining Contractual Term, Exercised	'0 years
Weighted- Average Remaining Contractual Term, Canceled	'0 years
Weighted- Average Remaining Contractual Term, Outstanding at December 31, 2013	'9 years 9 months 18 days
Weighted- Average Remaining Contractual Term, Exercisable at December 31, 2013	'9 years 9 months 18 days
Weighted- Average Remaining Contractual Term, Vested and expected to vest at December 31, 2013	'9 years 9 months 18 days
Aggregate Intrinsic Value, Outstanding	$12,251
Aggregate Intrinsic Value, Exercisable	248
Aggregate Intrinsic Value, Vested and expected to vest	$11,999
Restricted Stock [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Restricted Stock Units, Granted	741,150
Restricted Stock Units, Vested and unissued	-22,222
Restricted Stock Units, Canceled	-4,000
Restricted Stock Units, Unvested at December 31, 2013	714,928
Weighted Average Grant Date Fair Value, Granted	$12
Weighted Average Grant Date Fair Value, Vested	$12
Weighted Average Grant Date Fair Value, Canceled	'
Weighted Average Grant Date Fair Value, Unvested by December 31, 2013	$12
Restricted Stock Units (RSUs) [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Restricted Stock Units, Granted	481,623
Restricted Stock Units, Vested and unissued	-20,067
Restricted Stock Units, Canceled	'
Restricted Stock Units, Unvested at December 31, 2013	461,556
Weighted Average Grant Date Fair Value, Granted	$12
Weighted Average Grant Date Fair Value, Vested	$12
Weighted Average Grant Date Fair Value, Canceled	'
Weighted Average Grant Date Fair Value, Unvested by December 31, 2013	$12

StockBased_Compensation_Restri1

Stock-Based Compensation - Restricted Stock Awards and Restricted Stock Units Granted Under 2013 Stock Incentive Plan and Non-Vested Balance (Parenthetical) (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Estimated fair value of the Company's common stock	$14.18

StockBased_Compensation_Stock_

Stock-Based Compensation - Stock Incentive Plan (Detail)	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Risk-free interest rate	1.90%
Expected volatility	60.00%
Expected life (in years)	'6 years 3 months 0 days
Expected dividend yield	'

StockBased_Compensation_Summar1

Stock-Based Compensation - Summary of Total Stock-Based Compensation Expense (Detail) (USD $)

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 21, 2011

Dec. 11, 2011

Dec. 11, 2011

Dec. 11, 2011

Dec. 11, 2011

Dec. 11, 2011

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Cost of Revenue [Member]

Cost of Revenue [Member]

Cost of Revenue [Member]

Sales and Marketing [Member]

Sales and Marketing [Member]

Sales and Marketing [Member]

Engineering and Development [Member]

Engineering and Development [Member]

Engineering and Development [Member]

General and Administrative [Member]

General and Administrative [Member]

General and Administrative [Member]

Cost of Revenue [Member]

Sales and Marketing [Member]

Engineering and Development [Member]

General and Administrative [Member]

Common Stock Options Restricted Stock Warrants And Changes In Capitalization [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total operating expense

'

$10,763

$2,308

'

$126

$26

'

$459

$266

'

$267

$133

'

$9,911

$1,883

$1,000

$1,000

'

'

'

$1,000

Dividend_Additional_Informatio

Dividend - Additional Information (Detail) (USD $)	0 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Nov. 09, 2012	Apr. 20, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Equity [Abstract]	'	'	'	'	'
Dividend paid to Holdings LP	$300	'	'	'	'
Dividend paid to B-1 unit holders	10.5	6	'	'	'
Dividend paid to class A unit holders	289.5	'	'	'	'
General and administrative expense	'	'	'	9.8	5
Compensation expenses	'	'	$1.40	$0.70	'

Income_Taxes_Components_of_Inc

Income Taxes - Components of Income/Loss Before Income Taxes (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Income Tax Benefit [Line Items]	'	'
Total loss before income taxes	($161,375)	($216,478)
United States [Member]	'	'
Income Tax Benefit [Line Items]	'	'
United States	-158,481	-216,478
Foreign [Member]	'	'
Income Tax Benefit [Line Items]	'	'
Foreign	($2,894)	'

Income_Taxes_Components_of_Inc1

Income Taxes - Components of Income Taxes Benefit and Expenses (Detail) (USD $)	12 Months Ended		0 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 21, 2011	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012
	Predecessor [Member]	Predecessor [Member]	Successor [Member]	Successor [Member]	Successor [Member]
Income Tax Benefit [Line Items]	'	'	'	'	'
U.S. federal	'	'	'	'	'
State	'	126	10	267	407
Foreign	'	'	'	914	'
Total current provision	'	126	10	1,181	407
U.S. federal	'	-23,112	-2,240	-50,007	-64,295
State	'	-5,482	-516	-8,852	-13,315
Foreign	'	'	'	-1,590	'
Change in valuation allowance	'	28,594	'	55,672	'
Total deferred provision	'	'	-2,756	-4,777	-77,610
Total expense (benefit)	$126	$126	($2,746)	($3,596)	($77,203)

Income_Taxes_Reconciliation_of

Income Taxes - Reconciliation of Statutory Federal Rate (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Income Tax Benefit [Line Items]	'	'
U.S. federal taxes at statutory rate	34.00%	34.00%
State income taxes, net of federal benefit	3.20%	3.60%
Permanent differences	-2.10%	-2.50%
Foreign rate differential	-0.20%	'
Rate change	0.40%	0.40%
Other	1.40%	0.20%
Total	2.20%	35.70%
Domestic Tax Authority [Member]	'	'
Income Tax Benefit [Line Items]	'	'
Change in valuation allowance - foreign	-34.00%	'
Foreign Tax Authority [Member]	'	'
Income Tax Benefit [Line Items]	'	'
Change in valuation allowance - foreign	-0.50%	'

Income_Taxes_Components_of_the

Income Taxes - Components of the Company's Deferred Income Tax Assets and Liabilities (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Income Tax Disclosure [Abstract]	'	'
Net operating loss carry forward	$87,784	$56,398
Other	1,598	330
Deferred compensation	556	387
Deferred revenue	11,622	9,127
Other reserves	5,848	9,971
Stock-based compensation	2,788	'
Total deferred income tax assets	110,196	76,213
Purchased intangible assets	-56,848	-85,836
Goodwill	-10,736	-4,679
Property and equipment	-16	-1,184
Total deferred income tax liabilities	-67,600	-91,699
Valuation allowance	-55,786	'
Net deferred income tax assets/(liabilities)	($13,190)	($15,486)

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended				12 Months Ended		0 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2011	Dec. 21, 2011	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012
			India [Member]	UK [Member]	Predecessor [Member]	Predecessor [Member]	Successor [Member]	Successor [Member]	Successor [Member]
Income Tax Information [Line Items]	'	'	'	'	'	'	'	'	'
Amount of net operating loss carry-forwards available to offset future U.S. federal taxable income	$214,200,000	'	'	'	'	'	'	'	'
Amount of net operating loss carry-forwards available to offset future state taxable income	152,800,000	'	'	'	'	'	'	'	'
Expire date of carry forwards	'through 2033	'	'	'	'	'	'	'	'
Future foreign taxable income	33,700,000	'	'	'	'	'	'	'	'
Loss carry-forwards	'	'	2,100,000	31,600,000	'	'	'	'	'
Net operating loss carry-forwards	87,784,000	56,398,000	'	'	'	'	'	'	'
Valuation allowance	55,786,000	'	'	'	'	'	'	'	'
Tax expense (benefit)	'	'	'	'	126,000	126,000	-2,746,000	-3,596,000	-77,203,000
Cumulative pre-tax book loss position period	'	'	'	'	'	'	'	'3 years	'
Unrecognized tax positions	0	0	'	'	'	'	'	'	'
Cumulatively profitable foreign jurisdiction	$2,500,000	'	'	'	'	'	'	'	'

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Detail) (USD $)	12 Months Ended		0 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012
		Predecessor [Member]	Successor [Member]	Successor [Member]	Successor [Member]
Commitments And Contingencies [Line Items]	'	'	'	'	'
Operating Leases due date	'2024	'	'	'	'
Total rent expense	'	$1,500,000	$43,000	$8,900,000	$2,700,000

Commitments_and_Contingencies_2

Commitments and Contingencies - Summary of Future Minimum Annual Rental Payments Under these Leases (Detail) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Commitments And Contingencies Disclosure [Abstract]	'
2014	$8,362
2015	7,901
2016	6,558
2017	5,988
2018	3,904
Thereafter	15,441
Total minimum lease payments	$48,154

Employee_Benefit_Plans_Additio

Employee Benefit Plans - Additional Information (Detail) (USD $)	0 Months Ended	12 Months Ended
	Jan. 02, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012
				Predecessor [Member]	Successor [Member]	Dotster, Inc. [Member]	Other Acquisitions [Member]	Other Acquisitions [Member]	Other Acquisitions [Member]	HostGator [Member]	HostGator [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Statutorily prescribed limit	'	$17,500	'	'	'	'	'	'	'	'	'
Participant's annual contribution	100.00%	'	'	'	'	'	'	'	'	'	'
Percentage of participant's annual base salary to the contribution plan	3.00%	3.00%	'	'	'	3.00%	'	'	'	4.00%	'
Each participant's contribution	50.00%	50.00%	'	'	'	50.00%	'	'	'	'	'
Percentage of next annual contribution to salary	2.00%	'	'	'	'	2.00%	'	'	'	'	'
Match vests	'	100.00%	'	'	'	100.00%	'	'	'	'	'
Matching contribution made by the group under the plan	'	$1,200,000	$0	$0	$0	'	$400,000	$200,000	$62,000	$100,000	$100,000
Percentage of matching contribution on employee savings plan	'	'	'	'	'	100.00%	'	'	'	25.00%	'
Salary vesting period	'	'	'	'	'	'	'	'	'	'3 years	'

Related_Party_Transactions_Add

Related Party Transactions - Additional Information (Detail) (USD $)

12 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 21, 2011

Dec. 31, 2011

Dec. 31, 2011

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Immediate Family Member of Management or Principal Owner [Member]

Immediate Family Member of Management or Principal Owner [Member]

Immediate Family Member of Management or Principal Owner [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Successor [Member]

Immediate Family Member of Management or Principal Owner [Member]

Director [Member]

Immediate Family Member of Management or Principal Owner [Member]

Director [Member]

Director [Member]

Cost of Revenue [Member]

Cost of Revenue [Member]

Cost of Revenue [Member]

Related Party Transaction [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cost of revenue

'

'

'

$5,200,000

'

'

$133,399,000

$4,800,000

'

$3,901,000

$350,103,000

$237,179,000

$4,600,000

'

'

Engineering and development expense

'

'

'

900,000

'

'

5,538,000

600,000

'

101,000

23,205,000

13,803,000

1,000,000

'

'

Sales and marketing expense

'

'

'

300,000

'

'

54,932,000

100,000

'

1,482,000

117,689,000

83,110,000

300,000

'

'

General and administrative expense

9,800,000

5,000,000

'

900,000

900,000

'

16,938,000

'

'

3,755,000

92,347,000

48,411,000

'

'

'

Accrued expenses

31,267,000

'

35,433,000

'

200,000

300,000

'

'

'

'

'

'

'

'

'

Cost of revenue

'

'

'

'

'

'

'

'

$1,100,000

'

'

'

'

$3,000,000

$2,200,000

Subsequent_Events_Additional_i

Subsequent Events - Additional information (Detail) (Directi [Member], USD $)	1 Months Ended	12 Months Ended	0 Months Ended
In Millions, except Share data, unless otherwise specified	Aug. 31, 2013	Dec. 31, 2013	Jan. 23, 2014	Jan. 23, 2014	Jan. 23, 2014
			Subsequent Event [Member]	Minimum [Member]	Maximum [Member]
				Subsequent Event [Member]	Subsequent Event [Member]
Subsequent Event [Line Items]	'	'	'	'	'
Purchase price	'	'	'	$100	$110
Cash payment on purchase	5	20.5	25.5	'	'
Principal amount	'	'	51	'	'
Issuance of shares	'	2,123,039	'	'	'
Maturity date of promissory note	'	15-Apr-14	'	'	'
Additional aggregate payments	'	'	$62	'	'

Quarterly_Financial_Data_Sched

Quarterly Financial Data - Schedule of Condensed Income Statement (Detail) (USD $)	0 Months Ended	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Revenue	'	$136,420	$132,913	$128,222	$122,741	$117,035	$83,353	$50,475	$41,293	'	'
Gross profit	'	48,862	45,748	40,250	35,533	29,915	13,861	8,409	2,792	'	'
Loss from operations	'	-35,599	-4,335	-10,880	-12,234	-23,603	-25,140	-20,186	-21,418	'	'
Net loss attributable to Endurance International Group Holdings, Inc	($4,381)	($67,774)	($27,027)	($42,958)	($21,728)	($72,590)	($27,692)	($20,251)	($18,765)	($159,187)	($139,298)
Basic and diluted net loss per share attributable to Endurance International Group Holdings, Inc.	($0.05)	($0.57)	($0.28)	($0.44)	($0.22)	($0.75)	($0.29)	($0.21)	($0.19)	($1.55)	($1.44)

Quarterly_Financial_Data_Addit

Quarterly Financial Data - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]	'	'
Bonus payments related to initial public offering	$24.90	'
Stock-based compensation expense	$9.70	$2.40