Leases (Finance Lease Receivables By Risk Categories) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Recorded Investment [Line Items]
Net investment in finance leases, 2020	$ 4,892
Net investment in finance leases, 2019	91,101
Net investment in finance leases, 2018	263,294
Net investment in finance leases, 2017	178,184
Net investment in finance leases, 2016	9,520
Net investment in finance leases, Prior	8,060
Total net investment in finance leases	555,051	$ 567,368
Financing receivable, 2019	33,523
Total financing receivable	33,523	34,419
Tier 1 [Member]
Financing Receivable, Recorded Investment [Line Items]
Net investment in finance leases, 2020	2,880
Net investment in finance leases, 2019	59,580
Net investment in finance leases, 2018	248,821
Net investment in finance leases, 2017	171,092
Net investment in finance leases, 2016	7,200
Net investment in finance leases, Prior	1,654
Total net investment in finance leases	491,227	502,265
Financing receivable, 2019	32,830
Total financing receivable	32,830	33,694
Tier 2 [Member]
Financing Receivable, Recorded Investment [Line Items]
Net investment in finance leases, 2020	2,012
Net investment in finance leases, 2019	31,521
Net investment in finance leases, 2018	14,473
Net investment in finance leases, 2017	7,092
Net investment in finance leases, 2016	2,320
Net investment in finance leases, Prior	6,406
Total net investment in finance leases	63,824	65,103
Financing receivable, 2019	693
Total financing receivable	$ 693	725
Tier 3 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total net investment in finance leases
Total financing receivable

Amount, after fee received for commitment to originate or purchase, of financing receivable. Excludes financing receivable covered under loss sharing agreement.

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