Allowance for Credit Losses (Note Restructurings During Period) (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($) loans	Jun. 30, 2020 USD ($) loans	Jun. 30, 2021 USD ($) loans	Jun. 30, 2020 USD ($) loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans	121	146	250	317
Recorded investment at period end | $	$ 21,557	$ 37,040	$ 43,652	$ 54,014
Interest only period provided
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans	4	7	10	17
Recorded investment at period end | $	$ 3,353	$ 15,352	$ 10,118	$ 19,328
Loan term extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans	41	27	66	33
Recorded investment at period end | $	$ 4,053	$ 2,925	$ 7,700	$ 3,657
Below market interest rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans	37	69	90	157
Recorded investment at period end | $	$ 7,730	$ 17,291	$ 15,643	$ 25,389
Discharged from bankruptcy
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans	39	43	84	110
Recorded investment at period end | $	$ 6,421	$ 1,472	$ 10,191	$ 5,640