Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Summary Of Unvested Shares) (Details)

v3.19.2
Stock-Based Compensation (Summary Of Unvested Shares) (Details) - Stock Option [Member]
6 Months Ended
Jun. 30, 2019
$ / shares
shares
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]  
Number of Options, Unvested | shares 131,531
Number of Options, Granted | shares 52,465
Number of Options, Vested | shares (32,503)
Number of Options, Cancelled | shares (33,100)
Number of Options, Unvested | shares 118,393
Weighted Average Fair Value at Grant Date, Unvested | $ / shares $ 13.19
Weighted Average Fair Value at Grant Date, Granted | $ / shares 4.20
Weighted Average Fair Value at Grant Date, Vested | $ / shares 16.16
Weighted Average Fair Value at Grant Date, Cancelled | $ / shares 12.73
Weighted Average Fair Value at Grant Date, Unvested | $ / shares $ 8.52