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Summary of significant accounting policies (Details 2) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Marketable securities | |||
| Short-term marketable securities | $ 1,614us-gaap_AvailableForSaleSecuritiesCurrent | $ 32,962us-gaap_AvailableForSaleSecuritiesCurrent | |
| Long-term marketable securities | 0us-gaap_AvailableForSaleSecuritiesNoncurrent | 0us-gaap_AvailableForSaleSecuritiesNoncurrent | 0us-gaap_AvailableForSaleSecuritiesNoncurrent |
| Unrealized gains or losses in accumulated other comprehensive income (loss) | 0us-gaap_AccumulatedOtherComprehensiveIncomeLossBeforeTax1 | 0us-gaap_AccumulatedOtherComprehensiveIncomeLossBeforeTax1 | |
| Restricted cash | |||
| Restricted cash | 0us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue | 545us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue | |
| Short-term restricted cash related to letters of credit | 545us-gaap_CashCollateralForBorrowedSecurities | ||
| Restricted cash classified as long-term | 0us-gaap_RestrictedCashAndCashEquivalentsNoncurrent | ||
| Business combinations | |||
| Transaction costs associated with business combinations | $ 0us-gaap_BusinessCombinationAcquisitionRelatedCosts | $ 354us-gaap_BusinessCombinationAcquisitionRelatedCosts | $ 50us-gaap_BusinessCombinationAcquisitionRelatedCosts |
| Total Revenue | Affiliated entities | |||
| Concentrations of credit risk | |||
| Concentration risk percentage | 15.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesMember / dei_LegalEntityAxis = us-gaap_AffiliatedEntityMember |
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| Number of groups of affiliated entities | 1wifi_NumberOfGroupsOfAffiliatedEntities / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesMember / dei_LegalEntityAxis = us-gaap_AffiliatedEntityMember |
2wifi_NumberOfGroupsOfAffiliatedEntities / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesMember / dei_LegalEntityAxis = us-gaap_AffiliatedEntityMember |
2wifi_NumberOfGroupsOfAffiliatedEntities / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesMember / dei_LegalEntityAxis = us-gaap_AffiliatedEntityMember |
| Total Revenue | Affiliated entities group one | |||
| Concentrations of credit risk | |||
| Concentration risk percentage | 14.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesMember / dei_LegalEntityAxis = wifi_AffiliatedEntityGroupOneMember |
17.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesMember / dei_LegalEntityAxis = wifi_AffiliatedEntityGroupOneMember |
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| Total Revenue | Affiliated entities group two | |||
| Concentrations of credit risk | |||
| Concentration risk percentage | 14.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesMember / dei_LegalEntityAxis = wifi_AffiliatedEntityGroupTwoMember |
15.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesMember / dei_LegalEntityAxis = wifi_AffiliatedEntityGroupTwoMember |
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| Total accounts receivable | Affiliated entities | |||
| Concentrations of credit risk | |||
| Concentration risk percentage | 12.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / dei_LegalEntityAxis = us-gaap_AffiliatedEntityMember |
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| Number of groups of affiliated entities | 2wifi_NumberOfGroupsOfAffiliatedEntities / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / dei_LegalEntityAxis = us-gaap_AffiliatedEntityMember |
1wifi_NumberOfGroupsOfAffiliatedEntities / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / dei_LegalEntityAxis = us-gaap_AffiliatedEntityMember |
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| Total accounts receivable | Affiliated entities group one | |||
| Concentrations of credit risk | |||
| Concentration risk percentage | 30.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / dei_LegalEntityAxis = wifi_AffiliatedEntityGroupOneMember |
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| Total accounts receivable | Affiliated entities group two | |||
| Concentrations of credit risk | |||
| Concentration risk percentage | 17.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / dei_LegalEntityAxis = wifi_AffiliatedEntityGroupTwoMember |
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| X | ||||||||||
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- Definition
Amount before tax of increase (decrease) in accumulated in equity from transactions and other events and circumstances from non-owner sources. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners (distributions to owners). No definition available.
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| X | ||||||||||
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- Definition
Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Investments in debt and equity securities which are categorized neither as held-to-maturity nor trading and which are intended to be sold or mature more than one year from the balance sheet date or operating cycle, if longer. Such securities are reported at fair value; unrealized gains (losses) related to Available-for-sale Securities are excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain (loss) of an Available-for-sale security that is designated as being hedged in a fair value hedge is recognized in earnings during the period of the hedge, as are other than temporary declines in fair value below the cost basis for investments in equity securities and debt securities that an entity intends to sell or it is more likely than not that it will be required to sell before the recovery of its amortized cost basis. Other than temporary declines in fair value below the cost basis for debt securities categorized as Available-for-sale that an entity does not intend to sell and for which it is not more likely than not that the entity will be required to sell before the recovery of its amortized cost basis are bifurcated into credit losses and losses related to all other factors. Other than temporary declines in fair value below cost basis related to credit losses are recognized in earnings, and losses related to all other factors are recognized in other comprehensive income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Carrying amount as of the balance sheet date of cash collateral held for borrowed securities, for which the cash is restricted as to withdrawal or usage. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. For a classified balance sheet represents the current portion only (the noncurrent portion has a separate concept); there is a separate and distinct element for unclassified presentations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Cash and equivalents whose use in whole or in part is restricted for the long-term, generally by contractual agreements or regulatory requirements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Represents the number of groups of affiliated entities. No definition available.
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- Details
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- Details
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- Details
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