v3.10.0.1

Summary of significant accounting policies - Basis of presentation and consolidation (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
	Jan. 01, 2018	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Adoption of ASC 606
Accumulated deficit		$ (129,930)				$ (131,967)				$ (129,930)	$ (131,967)
Accounts receivable, net	$ 25,079	42,766				26,148				42,766	26,148
Prepaid expenses and other current assets	6,539	7,815				6,369				7,815	6,369
Other assets	7,903	9,936				10,082				9,936	10,082
Deferred revenue, current	75,884	80,383				61,708				80,383	61,708
Deferred revenue, net of current portion	128,588	137,205				149,168				137,205	149,168
Non-controlling interests		2,211				1,212				2,211	1,212
Revenue		67,808	$ 65,253	$ 59,601	$ 58,159	57,348	$ 53,655	$ 49,033	$ 44,333	250,821	204,369	$ 159,344
Income tax benefit										(5,153)	(2,078)	427
Non-controlling interests										1,489	590	$ 348
Adjustment for adoption
Adoption of ASC 606
Accounts receivable, net	(1,069)
Prepaid expenses and other current assets	170
Other assets	(2,179)
Deferred revenue, current	14,176
Deferred revenue, net of current portion	(20,580)
ASC 606 | As per ASC 605
Adoption of ASC 606
Accounts receivable, net		43,410				26,148				43,410	26,148
Prepaid expenses and other current assets		7,603				6,369				7,603	6,369
Other assets		12,224				10,082				12,224	10,082
Deferred revenue, current		82,731				61,708				82,731	61,708
Deferred revenue, net of current portion		147,785				$ 149,168				147,785	$ 149,168
Non-controlling interests		408								408
Revenue										244,307
Income tax benefit										(4,785)
Non-controlling interests										(245)
ASC 606 | Adjustment for adoption
Adoption of ASC 606
Accumulated deficit	3,257
Accounts receivable, net		(644)								(644)
Prepaid expenses and other current assets		212								212
Other assets		(2,288)								(2,288)
Deferred revenue, current		(2,348)								(2,348)
Deferred revenue, net of current portion		(10,580)								(10,580)
Non-controlling interests		$ 1,803								1,803
Revenue										6,514
Income tax benefit										(368)
Non-controlling interests	$ 69									$ 1,734
Chicago Concourse Development Group, LLC
Basis of presentation and consolidation
Percentage of ownership in subsidiaries		70.00%								70.00%
Boingo Holding Participacoes Ltda.
Basis of presentation and consolidation
Percentage of ownership in subsidiaries		75.00%								75.00%

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