Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Schedule Of Changes In The Number Of Deferred Stock Shares Under The Stock Plan And Incentive Plan) (Details)

v3.8.0.1
Stock-Based Compensation (Schedule Of Changes In The Number Of Deferred Stock Shares Under The Stock Plan And Incentive Plan) (Details) - Deferred Stock [Member]
9 Months Ended
Sep. 30, 2017
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares, Outstanding | shares 149,260
Shares, Granted | shares 100,239
Shares, Vested | shares (9,214)
Shares, Forfeited | shares (44,845)
Shares, Outstanding | shares 195,440
Weighted Average Grant Date Fair Value, Outstanding | $ / shares $ 9.55
Weighted Average Grant Date Fair Value, Granted | $ / shares 4.42
Weighted Average Grant Date Fair Value, Vested | $ / shares 12.29
Weighted Average Grant Date Fair Value, Forfeited | $ / shares 10.28
Weighted Average Grant Date Fair Value, Outstanding | $ / shares $ 6.62