Fair value of financial instruments (Tables)
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Mar. 31, 2015
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Fair Value Disclosures [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Estimated Fair Value of Private Placement Warrants Publicly Traded Stock Pricing Approach | As of March 31, 2015 and December 31, 2014, the Company estimated the fair value of its liability for Private Placement Warrants with a publicly traded stock pricing approach using the Black-Scholes option pricing model. The inputs of the Black-Scholes option pricing model included the following:
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Summary of Change in Estimated Fair Value of Company's Level 3 Financial Instrument | The following table summarizes the change in the estimated fair value of the Company’s Level 3 Private Placement Warrants liability in the three months ended March 31, 2015:
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Financial Liability Measured at Fair Value on Recurring Basis | The following table summarizes fair value measurements by level as of March 31, 2015, for the Company’s level 3 financial liabilities measured at fair value on a recurring basis:
The following table summarizes fair value measurement by level as of December 31, 2014, for the Company’s level 3 financial liability measured at fair value on a recurring basis:
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