Fair Value Disclosures (Assets and Liabilities Measured At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Thousands		Sep. 30, 2017	Dec. 31, 2016
Derivative Liability, Fair Value, Gross Liability		$ (200)	$ (2,500)
Derivative Asset, Fair Value, Gross Asset		23,300	35,900
Fair Value, Measurements, Recurring [Member] | Cross Currency Swaps [Member]
Derivative Asset, Fair Value, Gross Asset	[1]	1,372	4,158
Fair Value, Measurements, Recurring [Member] | Cross Currency Swaps [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative Asset, Fair Value, Gross Asset	[1]	1,372	4,158
Fair Value, Measurements, Recurring [Member] | Currency Forward Agreements [Member]
Derivative Asset, Fair Value, Gross Asset	[1]	21,650	31,782
Fair Value, Measurements, Recurring [Member] | Currency Forward Agreements [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative Asset, Fair Value, Gross Asset	[1]	21,650	31,782
Fair Value, Measurements, Recurring [Member] | Interest Rate Swap [Member]
Derivative Liability, Fair Value, Gross Liability		83	(2,482)	[2]
Fair Value, Measurements, Recurring [Member] | Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative Liability, Fair Value, Gross Liability	[2]	$ 83	$ (2,482)

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

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