Annual report pursuant to Section 13 and 15(d)

Fair Value Measurement (Details 2)

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Fair Value Measurement (Details 2) - Westpark Contingently Issuable Warrants [Member]
12 Months Ended
Dec. 31, 2016
Risk-free interest rate 2.45%
Expected dividend yield 0.00%
Expected term (in years) 10 years
Expected volatility 87.00%