Loans Loans (Restructured Loans Past Due in Excess of 90 Days) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) Item	Dec. 31, 2018 USD ($) Item	Dec. 31, 2017 USD ($) Item
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans restructured during the last year In excess of 90 days past due | Item	4	0	1
Dollar amount of loans previously restructured during the last year in excess of 90 days past due	$ 3,340	$ 0	$ 43,137
Restructured loans on non-accrual status at period end	5,576	0	53,622
Chare-offs of restrucured loans recognized in connection with restructuring	0	0	0
Charge-offs of restructured loans recognized on previously restructured loans	1,500	7,650	9,951
Proceeds from sale of restructured loans	$ 0	$ 15,750	$ 0