Treasury Share Repurchase (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Treasury Share Repurchase [Abstract]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	7,500,000
Shars Repurchased Under Share Repurchase Plan	32,362
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures	184,455	84,414
Treasury Stock, Shares, Acquired	96,614	16,512
Treasury Stock Acquired, Average Cost Per Share	$ 38.13