Fair Value (Fair Value by Balance Sheet Location) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net derivative asset (liability)	$ (1,660)	$ (81)
Prepaid and Other Current Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value	394	41
Derivative Asset
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value	19	298
Derivative Liability
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities, fair value	0	(420)
Other Long-Term Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities, fair value	$ (2,073)	$ 0