Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.3
Stock-Based Compensation and Employee Benefit Plans - ESPP (Details 3) - $ / shares
9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Employee Stock Purchase Plans, Weighted Average Purchase Price of Shares Purchased $ 16.21  
ESPP [Member]    
Stock Issued During Period, Shares, Employee Stock Purchase Plans (142,013)  
Employee Stock [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value $ 6.61 $ 5.37
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate 2.43% 2.09%
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 6 months
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate 40.47% 46.00%