Derivative Financial Instruments (Fair Value of Derivative Instruments as Recorded in Consolidated Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Derivatives, Fair Value [Line Items]
Total derivatives, asset derivatives	$ 473	$ 1,020
Total derivatives, liability derivatives	412	14
Designated as hedging instrument
Derivatives, Fair Value [Line Items]
Total derivatives designated as hedging instruments, asset derivatives	473	1,020
Total derivatives designated as hedging instruments, liability derivatives	412	0
Designated as hedging instrument | Prepaid expenses and other
Derivatives, Fair Value [Line Items]
Interest rate swap agreements, asset derivatives	39	128
Foreign currency exchange contracts, asset derivatives	292	83
Designated as hedging instrument | Other current liabilities
Derivatives, Fair Value [Line Items]
Interest rate swap agreements, liability derivatives	121	0
Foreign currency exchange contracts, liability derivatives	0	0
Designated as hedging instrument | Other noncurrent assets
Derivatives, Fair Value [Line Items]
Interest rate swap agreements, asset derivatives	142	809
Foreign currency exchange contracts, asset derivatives	0	0
Designated as hedging instrument | Other long-term liabilities
Derivatives, Fair Value [Line Items]
Interest rate swap agreements, liability derivatives	291	0
Foreign currency exchange contracts, liability derivatives	0	0
Not designated as hedging instrument
Derivatives, Fair Value [Line Items]
Total derivatives no designated as hedging instruments, asset derivatives	0	0
Total derivatives no designated as hedging instruments, liability derivatives	0	14
Not designated as hedging instrument | Prepaid expenses and other
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts, asset derivatives	0	0
Foreign currency exchange contracts, liability derivatives	$ 0	$ 14