Stock incentive plans (Details 3) - Stock options	12 Months Ended
Dec. 31, 2015
Stock incentive plans
Vesting period	4 years
Vesting percentage when the individual completes 12 months of continuous service	25.00%
Continuous service period of individual	12 months
Vesting percentage on a monthly basis	75.00%

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Represents the continuous service period of an individual that is required for vesting a specified percentage of awards.

+ References

No definition available.

+ Details

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Namespace Prefix:	wifi_
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Balance Type:	na
Period Type:	duration

- Definition

Represents the vesting rights percentage on a monthly basis under the compensation plan.

+ References

No definition available.

+ Details

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Namespace Prefix:	wifi_
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- Definition

Represents the vesting rights percentage when the individual completes a specified period of continuous service under the compensation plan.

+ References

No definition available.

+ Details

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Namespace Prefix:	wifi_
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- Details

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