Allowance for Credit Losses (Note Restructurings During Period) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($) loans	Sep. 30, 2019 USD ($) loans	Sep. 30, 2020 USD ($) loans	Sep. 30, 2019 USD ($) loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans	145	142	462	381
Recorded investment at period end | $	$ 25,078	$ 14,251	$ 76,497	$ 35,546
Number of Loans | loans	69	59	178	164
Recorded investment at period end | $	$ 9,410	$ 4,036	$ 17,553	$ 13,976
Interest only period provided
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans	6	2	23	6
Recorded investment at period end | $	$ 5,703	$ 1,221	$ 24,847	$ 3,209
Number of Loans | loans	3	0	6	2
Recorded investment at period end | $	$ 3,730	$ 0	$ 6,967	$ 2,064
Loan term extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans	29	5	62	13
Recorded investment at period end | $	$ 2,380	$ 2,473	$ 5,885	$ 3,870
Number of Loans | loans	18	0	34	4
Recorded investment at period end | $	$ 1,755	$ 0	$ 3,244	$ 514
Below market interest rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans	55	80	212	205
Recorded investment at period end | $	$ 15,341	$ 4,460	$ 38,740	$ 14,968
Number of Loans | loans	26	34	72	86
Recorded investment at period end | $	$ 3,170	$ 2,034	$ 5,088	$ 5,977
Discharged from bankruptcy
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans	55	55	165	157
Recorded investment at period end | $	$ 1,654	$ 6,097	$ 7,025	$ 13,499
Number of Loans | loans	22	25	66	72
Recorded investment at period end | $	$ 755	$ 2,002	$ 2,254	$ 5,421