Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation and Employee Benefit Plans - ESPP (Details 3)

v3.20.2
Stock-Based Compensation and Employee Benefit Plans - ESPP (Details 3) - $ / shares
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Employee Stock Purchase Plans, Weighted Average Purchase Price of Shares Purchased $ 13.29  
ESPP [Member]    
Stock Issued During Period, Shares, Employee Stock Purchase Plans (161,171)  
Employee Stock [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value $ 6.41 $ 6.61
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate 0.15% 2.43%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate 0.00% 0.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term 6 months 3 days 6 months
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate 93.25% 40.47%