Stock Option and Incentive Plan Schedule of Stock Options Status (Details) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Beginning Outstanding, Shares	540,441	547,129	547,129
Beginning Oustanding, Weighted Average Exercise Price	$ 96.35	$ 96.38	$ 96.38
Exercised, Shares	0	(6,688)	0
Exercised, Weighted Averge Exercise Price	$ 0.00	$ 99.15	$ 0.00
Ending Outstanding, Shares	540,441	540,441	547,129
Ending Oustanding, Weighted Average Exercise Pric	$ 96.35	$ 96.35	$ 96.38