Summary of significant accounting policies (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2013
Basis of presentation
Decrease in net loss attributable to common stockholders due to certain out-of-period adjustments	$ 267
Business combinations
Transaction costs associated with business combinations	$ 34	$ 192
Concourse Communications Detroit, LLC
Principles of consolidation
Percentage of ownership in subsidiaries	70.00%	70.00%
Chicago Concourse Development Group, LLC
Principles of consolidation
Percentage of ownership in subsidiaries	70.00%	70.00%
Boingo Holding Participacoes Ltda.
Principles of consolidation
Percentage of ownership in subsidiaries	75.00%	75.00%

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 25

-Paragraph 23

-URI http://asc.fasb.org/extlink&oid=21917927&loc=d3e1043-128460

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 59

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration