Leases (Finance Lease Receivables By Risk Categories) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable, Recorded Investment [Line Items]
Net investment in finance leases, 2020	$ 6,576
Net investment in finance leases, 2019	86,328
Net investment in finance leases, 2018	256,320
Net investment in finance leases, 2017	174,239
Net investment in finance leases, 2016	8,630
Net investment in finance leases, Prior	7,108
Total net investment in finance leases	539,201	$ 567,368
Financing receivable, 2020	30,420
Financing receivable, 2019	32,611
Total financing receivable	63,031	34,419
Tier 1 [Member]
Financing Receivable, Recorded Investment [Line Items]
Net investment in finance leases, 2020	2,967
Net investment in finance leases, 2019	56,469
Net investment in finance leases, 2018	242,365
Net investment in finance leases, 2017	167,783
Net investment in finance leases, 2016	6,800
Net investment in finance leases, Prior	1,401
Total net investment in finance leases	477,785	502,265
Financing receivable, 2020	30,420
Financing receivable, 2019	31,948
Total financing receivable	62,368	33,694
Tier 2 [Member]
Financing Receivable, Recorded Investment [Line Items]
Net investment in finance leases, 2020	3,609
Net investment in finance leases, 2019	29,859
Net investment in finance leases, 2018	13,955
Net investment in finance leases, 2017	6,456
Net investment in finance leases, 2016	1,830
Net investment in finance leases, Prior	5,707
Total net investment in finance leases	61,416	65,103
Financing receivable, 2019	663
Total financing receivable	$ 663	725
Tier 3 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total net investment in finance leases
Total financing receivable

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