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Fair Value Measurement (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Cash equivalents: |  |
Total assets at fair value on a recurring basis | $ 8,427 | $ 1,380
Other liabilities: |  |
Total liabilities at fair value on a recurring basis | 2,115 | 3,330
Deferred Payments [Member] |  |
Other liabilities: |  |
Total liabilities at fair value on a recurring basis | 2,115 | 2,119
Interest Rate Swaps [Member] |  |
Cash equivalents: |  |
Total assets at fair value on a recurring basis | 45 |
Other liabilities: |  |
Total liabilities at fair value on a recurring basis |  | 1,211
Money Market Funds [Member] |  |
Cash equivalents: |  |
Total assets at fair value on a recurring basis | 8,382 | 1,380
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] |  |
Cash equivalents: |  |
Total assets at fair value on a recurring basis | 8,382 | 1,380
Other liabilities: |  |
Total liabilities at fair value on a recurring basis |  |
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] | Deferred Payments [Member] |  |
Other liabilities: |  |
Total liabilities at fair value on a recurring basis |  |
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] | Interest Rate Swaps [Member] |  |
Cash equivalents: |  |
Total assets at fair value on a recurring basis |  |
Other liabilities: |  |
Total liabilities at fair value on a recurring basis |  |
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] | Money Market Funds [Member] |  |
Cash equivalents: |  |
Total assets at fair value on a recurring basis | 8,382 | 1,380
Significant Other Observable Inputs (Level 2) [Member] |  |
Cash equivalents: |  |
Total assets at fair value on a recurring basis | 45 |
Other liabilities: |  |
Total liabilities at fair value on a recurring basis |  | 1,211
Significant Other Observable Inputs (Level 2) [Member] | Deferred Payments [Member] |  |
Other liabilities: |  |
Total liabilities at fair value on a recurring basis |  |
Significant Other Observable Inputs (Level 2) [Member] | Interest Rate Swaps [Member] |  |
Cash equivalents: |  |
Total assets at fair value on a recurring basis | 45 |
Other liabilities: |  |
Total liabilities at fair value on a recurring basis |  | 1,211
Significant Other Observable Inputs (Level 2) [Member] | Money Market Funds [Member] |  |
Cash equivalents: |  |
Total assets at fair value on a recurring basis |  |
Significant Unobservable Inputs (Level 3) [Member] |  |
Cash equivalents: |  |
Total assets at fair value on a recurring basis |  |
Other liabilities: |  |
Total liabilities at fair value on a recurring basis | 2,115 | 2,119
Significant Unobservable Inputs (Level 3) [Member] | Deferred Payments [Member] |  |
Other liabilities: |  |
Total liabilities at fair value on a recurring basis | 2,115 | 2,119
Significant Unobservable Inputs (Level 3) [Member] | Interest Rate Swaps [Member] |  |
Cash equivalents: |  |
Total assets at fair value on a recurring basis |  |
Other liabilities: |  |
Total liabilities at fair value on a recurring basis |  |
Significant Unobservable Inputs (Level 3) [Member] | Money Market Funds [Member] |  |
Cash equivalents: |  |
Total assets at fair value on a recurring basis |  |

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- Details
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- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a recurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References No definition available. + Details
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- Definition Aggregation of the liabilities reported on the balance sheet measured at fair value on a recurring basis by the entity. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant