Fair-Value Measurements (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Foreign Exchange Options [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
(Losses)/gains recognized in income, net		$ 119,000		$ 118,000
Interest Rate Swap [Member]
Derivative asset:
Derivative asset	1,900,000		1,900,000
Liability for floating rate leg	4,100,000		4,100,000
Receivable for fixed rate leg	5,900,000		5,900,000
Derivative liability:
Derivative liability	3,700,000		3,700,000
Liability for fixed rate leg	4,900,000		4,900,000
Receivable for floating rate leg	1,200,000		1,200,000
Interest expense			$ 900,000	$ 800,000