Lease Investments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Schedule of the Components of Income from Direct Finance and Operating Lease Equipment [Line Items]
Interest income on lease receivable	$ 8,258	$ 10,985	$ 13,052
Income related to lease payments	23,380	30,741	31,793
Minimum lease payments	160,508	190,879
Estimated unguaranteed residual values	0	41
Less: unearned income	(21,507)	(30,568)
Net investment in direct finance lease financing	139,001	160,352
Gross investment in operating lease financing	116,818	176,485
Accumulated depreciation	(51,778)	(64,801)
Net investment in operating lease financings	65,040	111,684
Carrying amount of residual assets covered by residual value guarantees	43,650	69,090
Income from reimbursements for personal property tax payments on operating leased equipment	610	730
Expense for payments of personal property taxes on operating leased equipment	610	730
Leased equipment
Schedule of the Components of Income from Direct Finance and Operating Lease Equipment [Line Items]
Depreciation	$ 20,203	$ 25,128	$ 26,248