v2.4.1.9

Commitments and contingencies (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Commitments and contingencies |  |  |
Rent expense for leases | $ 29,434 wifi_RentExpenseForLeasesFromGovernmentalAuthorities | $ 20,234 wifi_RentExpenseForLeasesFromGovernmentalAuthorities | $ 16,760 wifi_RentExpenseForLeasesFromGovernmentalAuthorities
Interest expense associated with the capital leases | 33 us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease | 15 us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease | 11 us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease
Rent expense for leases of office facilities | 1,621 us-gaap_LeaseAndRentalExpense | 1,227 us-gaap_LeaseAndRentalExpense | 1,209 us-gaap_LeaseAndRentalExpense
Sublease income included in rent expenses | 27 us-gaap_OperatingLeasesRentExpenseSubleaseRentals1 | 54 us-gaap_OperatingLeasesRentExpenseSubleaseRentals1 | 52 us-gaap_OperatingLeasesRentExpenseSubleaseRentals1
Capital Leases |  |  |
2015 | 331 us-gaap_CapitalLeasesFutureMinimumPaymentsDueCurrent |  |
2016 | 259 us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears |  |
2017 | 132 us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears |  |
2018 | 26 us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears |  |
Minimum lease payments | 748 us-gaap_CapitalLeasesFutureMinimumPaymentsDue |  |
Less: Amounts representing interest ranging from 3.1% to 11.1% | (58)us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments |  |
Capital leases minimum lease payments | 690 us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments |  |
Current portion | 309 us-gaap_CapitalLeaseObligationsCurrent | 526 us-gaap_CapitalLeaseObligationsCurrent |
Non-current portion | 381 us-gaap_CapitalLeaseObligationsNoncurrent | 473 us-gaap_CapitalLeaseObligationsNoncurrent |
Operating Leases and Airport Guarantees |  |  |
2015 | 10,038 wifi_OperatingLeasesAndAirportGuaranteesFutureMinimumPaymentsDueCurrent |  |
2016 | 9,842 wifi_OperatingLeasesAndAirportGuaranteesFutureMinimumPaymentsDueInTwoYears |  |
2017 | 9,852 wifi_OperatingLeasesAndAirportGuaranteesFutureMinimumPaymentsDueInThreeYears |  |
2018 | 8,821 wifi_OperatingLeasesAndAirportGuaranteesFutureMinimumPaymentsDueInFourYears |  |
2019 | 6,035 wifi_OperatingLeasesAndAirportGuaranteesFutureMinimumPaymentsDueInFiveYears |  |
Thereafter | 33,312 wifi_OperatingLeasesAndAirportGuaranteesFutureMinimumPaymentsDueThereafter |  |
Minimum lease payments | $ 77,900 wifi_OperatingLeasesAndAirportGuaranteesFutureMinimumPaymentsDue |  |
Minimum |  |  |
Capital Leases |  |  |
Interest rate (as a percent) | 3.10%wifi_InterestRateLesseeAssetsUnderCapitalLease / us-gaap_RangeAxis = us-gaap_MinimumMember |  |
Maximum |  |  |
Capital Leases |  |  |
Interest rate (as a percent) | 11.10%wifi_InterestRateLesseeAssetsUnderCapitalLease / us-gaap_RangeAxis = us-gaap_MaximumMember |  |

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

X
- Definition Amount of capital lease obligation due within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45023-112735 + Details
Name: | us-gaap_CapitalLeaseObligationsCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45023-112735 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 + Details
Name: | us-gaap_CapitalLeaseObligationsNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of minimum lease payments for capital leases. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 + Details
Name: | us-gaap_CapitalLeasesFutureMinimumPaymentsDue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition Amount of minimum lease payments for capital leases due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 + Details
Name: | us-gaap_CapitalLeasesFutureMinimumPaymentsDueCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of minimum lease payments for capital leases due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 + Details
Name: | us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of minimum lease payments for capital leases due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 + Details
Name: | us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of minimum lease payments for capital leases due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 + Details
Name: | us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount necessary to reduce net minimum lease payments to present value for capital leases. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 + Details
Name: | us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 + Details
Name: | us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition The amount, during the lease term, of each minimum [capital] lease payment allocated to interest expense so as to produce a constant periodic rate of interest on the remaining balance of the capital lease obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 35 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6916424&loc=d3e43161-112731 + Details
Name: | us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
Name: | us-gaap_LeaseAndRentalExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The total amount of sublease rental income recognized during the period that reduces the entity's rent expense incurred under operating leases. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 + Details
Name: | us-gaap_OperatingLeasesRentExpenseSubleaseRentals1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents rate of interest of minimum lease payments for capital leases before interest. + References No definition available. + Details
Name: | wifi_InterestRateLesseeAssetsUnderCapitalLease
Namespace Prefix: | wifi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of required minimum rental payments for leases and airport guarantees having an initial or remaining non-cancelable letter-term in excess of one year. + References No definition available. + Details
Name: | wifi_OperatingLeasesAndAirportGuaranteesFutureMinimumPaymentsDue
Namespace Prefix: | wifi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | wifi_OperatingLeasesAndAirportGuaranteesFutureMinimumPaymentsDueAbstract
Namespace Prefix: | wifi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of required minimum rental payments maturing in the next fiscal year following the latest fiscal year for operating leases and airport guarantees having an initial or remaining non-cancelable letter-term in excess of one year. + References No definition available. + Details
Name: | wifi_OperatingLeasesAndAirportGuaranteesFutureMinimumPaymentsDueCurrent
Namespace Prefix: | wifi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of required minimum rental payments maturing in the fifth fiscal year following the latest fiscal year for operating leases and airport guarantees having an initial or remaining non-cancelable letter-term in excess of one year. + References No definition available. + Details
Name: | wifi_OperatingLeasesAndAirportGuaranteesFutureMinimumPaymentsDueInFiveYears
Namespace Prefix: | wifi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of required minimum rental payments maturing in the fourth fiscal year following the latest fiscal year for operating leases and airport guarantees having an initial or remaining non-cancelable letter-term in excess of one year. + References No definition available. + Details
Name: | wifi_OperatingLeasesAndAirportGuaranteesFutureMinimumPaymentsDueInFourYears
Namespace Prefix: | wifi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of required minimum rental payments maturing in the third fiscal year following the latest fiscal year for operating leases and airport guarantees having an initial or remaining non-cancelable letter-term in excess of one year. + References No definition available. + Details
Name: | wifi_OperatingLeasesAndAirportGuaranteesFutureMinimumPaymentsDueInThreeYears
Namespace Prefix: | wifi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of required minimum rental payments maturing in the second fiscal year following the latest fiscal year for operating leases and airport guarantees having an initial or remaining non-cancelable letter-term in excess of one year. + References No definition available. + Details
Name: | wifi_OperatingLeasesAndAirportGuaranteesFutureMinimumPaymentsDueInTwoYears
Namespace Prefix: | wifi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of required minimum rental payments maturing after the fifth fiscal year following the latest fiscal year for operating leases and airport guarantees having an initial or remaining non-cancelable letter-term in excess of one year. + References No definition available. + Details
Name: | wifi_OperatingLeasesAndAirportGuaranteesFutureMinimumPaymentsDueThereafter
Namespace Prefix: | wifi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the rent expenses related to leases from governmental authorities. + References No definition available. + Details
Name: | wifi_RentExpenseForLeasesFromGovernmentalAuthorities
Namespace Prefix: | wifi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |