Derivative Instruments (Fair Value of Derivative Instruments) (Details) (Interest Rate Swap [Member], USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments designated as hedging instruments	$ 557	$ 1,296
Accrued expenses and other current liabilities [Member]
Derivatives, Fair Value [Line Items]
Interest rate swaps, current portion	85	0
Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Interest rate swaps, long-term portion	$ 472	$ 1,296

Fair value of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, elected not to be offset against a right to receive collateral under a master netting arrangement.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References+ Details