Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Schedule of Changes in the Number of Deferred Stock Shares Under the Incentive Plan) (Details)

v3.19.3
Stock-Based Compensation (Schedule of Changes in the Number of Deferred Stock Shares Under the Incentive Plan) (Details) - Performance Units [Member]
9 Months Ended
Sep. 30, 2019
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares, Outstanding - December 31, 2018 | shares 270,066
Shares, Granted | shares 157,907
Shares, Vested | shares (4,575)
Shares, Forfeited | shares (65,231)
Shares, Outstanding - September 30, 2019 | shares 358,167
Weighted Average Grant Date Fair Value, Outstanding - December 31, 2018 | $ / shares $ 4.48
Weighted Average Grant Date Fair Value, Granted | $ / shares 2.64
Weighted Average Grant Date Fair Value, Vested | $ / shares 4.56
Weighted Average Grant Date Fair Value, Forfeited | $ / shares 4.28
Weighted Average Grant Date Fair Value, Outstanding - September 30, 2019 | $ / shares $ 3.31