Fair-Value Measurements (Schedule of Fair Value of Financial Assets and Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2016		Dec. 31, 2015
Assets:
Common stock of unaffiliated foreign public company	$ 500
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets (Level 1) [Member]
Assets:
Cash equivalents	$ 9,028		$ 5,189
Assets held for sale
Foreign currency options
Common stock of unaffiliated foreign public company	$ 721	[1]	$ 819
Liabilities:
Interest rate swaps
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets:
Cash equivalents
Assets held for sale
Foreign currency options	$ 263
Common stock of unaffiliated foreign public company
Liabilities:
Interest rate swaps	$ (4,971)	[2]	$ (2,400)	[3]
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets:
Cash equivalents
Assets held for sale	$ 5,193		$ 4,988
Foreign currency options
Common stock of unaffiliated foreign public company
Liabilities:
Interest rate swaps
Interest Rate Swap [Member]
Derivative liability:
Liability for fixed rate leg	$ 4,600		$ 7,400
Receivable for floating rate leg	$ 9,600		$ 9,800

[1] Original cost basis $0.5 million

[2] Net of $4.6 million receivable floating leg and $9.6 million liability fixed leg

[3] Net of $7.4 million receivable floating leg and $9.8 million liability fixed leg