Notes Receivable, Net (Initial Direct Costs, Amortization Expense Related to Notes Receivable and Company's Operating and Direct Finance Leases) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortization of initial direct costs	$ 52	$ 21	$ 53	$ 58
Lease Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortization of initial direct costs	45	17	46	49
Notes Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortization of initial direct costs	$ 7	$ 4	$ 7	$ 9