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Summary of significant accounting policies (Details 4) (USD $)
In Thousands, except Per Share data, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2014
item
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Dec. 31, 2013
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Dec. 31, 2012
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| Foreign currency translation | |||
| Cummulative foreign currency translation adjustments, net of tax in accumulated other comprehensive income | $ (443)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax | $ 0us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax | |
| Income tax expense related to foreign currency translation adjustments | 0us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax | 0us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax | |
| Advertising, marketing and promotion costs | |||
| Capitalized advertising production costs | 0wifi_AdvertisingProductionCostsCapitalized | 0wifi_AdvertisingProductionCostsCapitalized | 0wifi_AdvertisingProductionCostsCapitalized |
| Advertising expenses | 1,350us-gaap_AdvertisingExpense | 2,302us-gaap_AdvertisingExpense | 2,374us-gaap_AdvertisingExpense |
| Assumptions that were used to calculate the grant date fair value of employee stock option grants | |||
| Expected term | 6 years 3 months | 6 years 3 months | 5 years 10 months 24 days |
| Expected volatility (as a percent) | 48.60%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate | 49.31%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate | 48.90%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate |
| Risk-free interest rate (as a percent) | 1.80%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate | 1.34%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate | 0.90%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate |
| Dividend yield (as a percent) | 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate | 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate | 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate |
| Dividends declared on common stock (in dollars per share) | $ 0us-gaap_CommonStockDividendsPerShareDeclared | ||
| Dividends paid on common stock (in dollars per share) | $ 0.00us-gaap_CommonStockDividendsPerShareCashPaid | ||
| Number of dividend payouts anticipated in the foreseeable future | 0wifi_NumberOfDividendPayoutsAnticipatedInForeseeableFuture | ||
| Stock-based compensation expense recognized for non-employee | $ 30wifi_AllocatedShareBasedCompensationExpenseForNonEmployees | $ 372wifi_AllocatedShareBasedCompensationExpenseForNonEmployees | |
| License agreements | Minimum | |||
| Revenue recognition | |||
| Term of the arrangement used to determine revenue recognition | 1 year | ||
| License agreements | Maximum | |||
| Revenue recognition | |||
| Term of the arrangement used to determine revenue recognition | 5 years | ||
| Wholesale Wi-Fi | Minimum | |||
| Revenue recognition | |||
| Term of the arrangement used to determine revenue recognition | 5 years | ||
| Wholesale Wi-Fi | Maximum | |||
| Revenue recognition | |||
| Term of the arrangement used to determine revenue recognition | 10 years | ||
| X | ||||||||||
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- Definition
Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Aggregate dividends paid during the period for each share of common stock outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Aggregate dividends declared during the period for each share of common stock outstanding. 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
Amount of tax expense (benefit), after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Details
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- Details
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| X | ||||||||||
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- Definition
The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Expected term of share-based compensation awards, 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
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| X | ||||||||||
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- Definition
The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of advertising production costs capitalized during the period. No definition available.
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- Definition
Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with non-employees. No definition available.
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- Definition
Represents the number of dividend payouts anticipated in the foreseeable future. No definition available.
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- Definition
Represents the term of the arrangement that is used as a basis for recognizing certain revenues. No definition available.
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- Details
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- Details
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