Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details)

v3.19.1
Stock-Based Compensation (Details) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
Maximum number of shares available for future issuance (in shares) 2,081,905  
Statutory rate (as a percent) 25.30% 25.30%
Tax effect on stock-based compensation expense after valuation allowance $ 0