Annual report pursuant to Section 13 and 15(d)

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

v3.10.0.1
Stock-Based Compensation (Summary Of Unvested Shares) (Details) - Stock Option [Member]
12 Months Ended
Dec. 31, 2018
$ / shares
shares
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]  
Number of Options, Granted 1,483,185
Nonvested Options [Member]  
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]  
Number of Options, Unvested 727,543
Number of Options, Granted 1,483,185
Number of Options, Vested (513,177)
Number of Options, Cancelled (119,195)
Number of Options, Unvested 1,578,356
Weighted Average Fair Value at Grant Date, Unvested | $ / shares $ 2.39
Weighted Average Fair Value at Grant Date, Granted | $ / shares 1.04
Weighted Average Fair Value at Grant Date, Vested | $ / shares 2.67
Weighted Average Fair Value at Grant Date, Cancelled | $ / shares 1.49
Weighted Average Fair Value at Grant Date, Unvested | $ / shares $ 1.10