Fair-Value Measurements (Schedule of Fair Value of Financial Assets and Liabilities) (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets (Level 1) [Member]
Assets:
Cash equivalents	$ 25,073,000		$ 33,171,000
Foreign exchange contracts
Common stock of foreign public company	952,000		562,000
Interest rate swap
Liabilities:
Interest rate swap
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets:
Cash equivalents
Foreign exchange contracts
Common stock of foreign public company
Interest rate swap	1,517,000	[1]
Liabilities:
Interest rate swap	(3,119,000)	[2]	(4,718,000)	[3]
Interest Rate Swap [Member]
Derivative asset:
Liability for fixed rate leg	4,100,000
Receivable for floating rate leg	5,600,000
Derivative liability:
Liability for fixed rate leg	3,800,000		5,900,000
Receivable for floating rate leg	$ 700,000		$ 1,200,000

[1] Net of $5.6 million receivable floating leg and $4.1 million liability fixed leg

[2] Net of $0.7 million receivable floating leg and $3.8 million liability fixed leg

[3] Net of $1.2 million receivable floating leg and $5.9 million liability fixed leg