Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, netted by jurisdiction and classified as current.

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Amount of decrease (increase) in additional paid in capital (APIC) for the acquisition of the remaining interest in non-controlling interest.

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Summary of significant accounting policies (Details) - USD ($) $ in Thousands		12 Months Ended
	Aug. 04, 2015	Dec. 31, 2015	Dec. 31, 2013	Aug. 03, 2015	Dec. 31, 2014
Principles of consolidation
Reduction to additional paid-in capital resulting from purchase of remaining noncontrolling interest		$ 1,150
Basis of presentation
Noncurrent deferred tax liabilities		$ (2,965)			$ (2,645)
Decrease in net loss attributable to common stockholders due to certain out-of-period adjustments			$ 217
ASU 2015-17 \| Early adoption
Basis of presentation
Current deferred tax assets					787
Noncurrent deferred tax liabilities					$ 787
Concourse Communications Detroit, LLC
Principles of consolidation
Percentage of additional ownership in Subsidiary acquired	30.00%
Total purchase price	$ 1,150
Reduction to additional paid-in capital resulting from purchase of remaining noncontrolling interest	$ 1,150
Chicago Concourse Development Group, LLC
Principles of consolidation
Percentage of ownership in subsidiaries		70.00%
Boingo Holding Participacoes Ltda.
Principles of consolidation
Percentage of ownership in subsidiaries		75.00%
Concourse Communications Detroit, LLC
Principles of consolidation
Percentage of ownership in subsidiaries				70.00%