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Concentrations of risk and segment information - Narrative (Details) (USD $) | 3 Months Ended |
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Mar. 31, 2015 | Mar. 31, 2014 | Dec. 31, 2014 country
Risks and Uncertainties [Abstract] |  |  |
Accounts receivable sold during the period | $ 35,300,000 us-gaap_FinancingReceivableSignificantSales | $ 31,300,000 us-gaap_FinancingReceivableSignificantSales |
Factoring fees | 300,000 us-gaap_GainLossOnSaleOfAccountsReceivable | 300,000 us-gaap_GainLossOnSaleOfAccountsReceivable |
Revenue, Major Customer [Line Items] |  |  |
Revenue | 363,109,000 us-gaap_Revenues | 235,716,000 us-gaap_Revenues |
United States [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Revenue | 155,300,000 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_US | 110,700,000 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_US |
Formerly APAC to EMEA Region [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Revenue |  | 4,100,000 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = gpro_FormerlyAPACtoEMEARegionMember |
Number of countries previously included in the APAC region |  |  | 4 us-gaap_NumberOfCountriesInWhichEntityOperates / us-gaap_StatementGeographicalAxis = gpro_FormerlyAPACtoEMEARegionMember
Outside the United States [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Long-lived assets | $ 28,800,000 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = gpro_OutsideUnitedStatesMember |  | 25,400,000 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = gpro_OutsideUnitedStatesMember

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- Definition The amount of any significant sales of financing receivables during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
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- Definition Reflects the net positive or negative amount derived from subtracting from net proceeds of sale, the carrying amounts, net of allocated reserves, of accounts receivable transferred to a third party in a transaction that qualifies for sales treatment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=13989330&loc=d3e107425-111719 + Details
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- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599 + Details
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + 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 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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