Commitments and contingencies (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015 item
Other matters
Number of internal audits related to venue partners	1wifi_NumberOfInternalAudits
Minimum
Other matters
Reasonably possible loss	0
Maximum
Other matters
Reasonably possible loss	3,000
Letter of Credit \| Silicon Valley Bank ("SVB") Agreement
Letters of credit
Amount of Letters of Credit that allows entity to draw	3,906
Number of drafts drawn under Letters of Credit	0

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

No definition available.

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

- Details

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- Definition

The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Represents number of drafts drawn under Letter of Credit authorization agreement.

+ References

No definition available.

+ Details

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- Definition

Represents the information about number of internal audits related to venue partners.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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