Annual report pursuant to Section 13 and 15(d)

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

v3.20.1
Stock Compensation (Schedule of Changes in the Number of Deferred Stock Shares Under the Incentive Plan) (Details) - Performance Units [Member] - $ / shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares, Outstanding - December 31, 270,066 190,524
Shares, Granted 161,107 163,002
Shares, Vested (4,575) (29,708)
Shares, Forfeited (105,371) (53,752)
Shares, Outstanding - December 31, 321,227 270,066
Weighted Average Grant Date Fair Value, Outstanding - December 31, $ 4.48 $ 6.60
Weighted Average Grant Date Fair Value, Granted 2.76 3.56
Weighted Average Grant Date Fair Value, Vested 4.56 10.51
Weighted Average Grant Date Fair Value, Forfeited 3.90 5.31
Weighted Average Grant Date Fair Value, Outstanding - December 31, $ 3.37 $ 4.48