Fair Value Disclosures (Assets and Liabilities Measured At Fair Value On A Recurring Basis) (Details) - USD ($)		Dec. 31, 2017	Dec. 31, 2016	May 21, 2015
Net Investment in Direct Financing and Sales Type Leases		$ 57,903,000	$ 102,698,000	$ 4,700,000
Derivative Liability, Fair Value, Gross Liability		(100,000)	(2,500,000)
Derivative Asset, Fair Value, Gross Asset		25,700,000	35,900,000
Cross Currency Swaps | Quoted Prices In Active Markets For Identical Assets (Level I) [Member]
Derivative Liability, Fair Value, Gross Liability		0
Derivative Asset, Fair Value, Gross Asset		0	0
Cross Currency Swaps | Significant Unobservable Inputs (Level 3) [Member]
Derivative Liability, Fair Value, Gross Liability		0
Derivative Asset, Fair Value, Gross Asset		0	0
Currency Forward Agreements Member | Quoted Prices In Active Markets For Identical Assets (Level I) [Member]
Derivative Asset, Fair Value, Gross Asset		0	0
Currency Forward Agreements Member | Significant Unobservable Inputs (Level 3) [Member]
Derivative Asset, Fair Value, Gross Asset		0	0
Interest Rate Swap [Member] | Quoted Prices In Active Markets For Identical Assets (Level I) [Member]
Derivative Liability, Fair Value, Gross Liability			0
Derivative Asset, Fair Value, Gross Asset		0
Interest Rate Swap [Member] | Significant Unobservable Inputs (Level 3) [Member]
Derivative Asset, Fair Value, Gross Asset		0
Fair Value, Measurements, Nonrecurring [Member] | Quoted Prices In Active Markets For Identical Assets (Level I) [Member]
Net Investment in Direct Financing and Sales Type Leases		0
Fair Value, Measurements, Nonrecurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Net Investment in Direct Financing and Sales Type Leases		0
Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Net Investment in Direct Financing and Sales Type Leases		35,807
Fair Value, Measurements, Recurring [Member] | Cross Currency Swaps
Derivative Liability, Fair Value, Gross Liability	[1]	134,000
Derivative Asset, Fair Value, Gross Asset	[1]	1,041,000	4,158,000
Fair Value, Measurements, Recurring [Member] | Cross Currency Swaps | Significant Other Observable Inputs (Level 2) [Member]
Derivative Liability, Fair Value, Gross Liability	[1]	134,000
Derivative Asset, Fair Value, Gross Asset	[1]	1,041,000	4,158,000
Fair Value, Measurements, Recurring [Member] | Currency Forward Agreements Member
Derivative Asset, Fair Value, Gross Asset	[1]	22,235,000	31,782,000
Fair Value, Measurements, Recurring [Member] | Currency Forward Agreements Member | Significant Other Observable Inputs (Level 2) [Member]
Derivative Asset, Fair Value, Gross Asset	[1]	22,235,000	31,782,000
Fair Value, Measurements, Recurring [Member] | Interest Rate Swap [Member]
Derivative Liability, Fair Value, Gross Liability	[2]		(2,482,000)
Derivative Asset, Fair Value, Gross Asset	[2]	(2,496,000)
Fair Value, Measurements, Recurring [Member] | Interest Rate Swap [Member] | Significant Other Observable Inputs (Level 2) [Member]
Derivative Liability, Fair Value, Gross Liability	[2]		(2,482,000)
Derivative Asset, Fair Value, Gross Asset	[2]	$ (2,496,000)
Fair Value, Measurements, Recurring [Member] | Interest Rate Swap [Member] | Significant Unobservable Inputs (Level 3) [Member]
Derivative Liability, Fair Value, Gross Liability			$ 0

[1] Included in "Other assets" in the accompanying consolidated balance sheet.

[2] Included in "Accounts payable and accrued liabilities" in the accompanying consolidated balance sheet.