v2.4.1.9

Goodwill and intangible assets (Details 2) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013
Changes in intangible assets |  |
Balance at the beginning of the period | $ 23,413 us-gaap_FiniteLivedIntangibleAssetsNet | $ 10,594 us-gaap_FiniteLivedIntangibleAssetsNet
Additions |  | 15,069 us-gaap_FinitelivedIntangibleAssetsAcquired1
Amortization expense | (3,682)wifi_AmortizationExpenseOfIntangibleAssets | (2,250)wifi_AmortizationExpenseOfIntangibleAssets
Impairment loss | (55)us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill |
Balance at the end of the period | $ 19,676 us-gaap_FiniteLivedIntangibleAssetsNet | $ 23,413 us-gaap_FiniteLivedIntangibleAssetsNet

X
- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. + References No definition available. + Details
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Namespace Prefix: | wifi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration