v3.6.0.2

Summary of significant accounting policies - Advertising, marketing and promotion costs (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Advertising, marketing and promotion costs |  |  |
Capitalized advertising production costs | $ 0 | $ 0 | $ 0
Advertising expenses | $ 1,925 | $ 1,703 | $ 1,350

X
- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
Name: | us-gaap_AdvertisingExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_SellingAndMarketingExpenseAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of advertising production costs capitalized during the period. + References No definition available. + Details
Name: | wifi_AdvertisingProductionCostsCapitalized
Namespace Prefix: | wifi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant