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Stock Incentive Plan - Fair Value Assumptions (Details) - Level 3 - Fair Value, Recurring - Warrants to the Lenders Under the Loan Agreement | Apr. 03, 2017 USD ($) $ / shares
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Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Expected term of warrants (in years) | 5 years
Total fair value | $ | $ 3,500,000
Stock price at grant date |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Warrants outstanding, measurement input | 8.88
Exercise option price |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Warrants outstanding, measurement input | 10.25
Expected volatility rate |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Warrants outstanding, measurement input | 0.4829
Risk-free rate |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Warrants outstanding, measurement input | 0.0188
Expected dividend yield |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Warrants outstanding, measurement input | 0

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