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Fair Value Measurements (Fair Value of Other Financial Instruments) (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Carrying Amount |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Borrowings under revolving credit facility | $ 27,950 | $ 38,566
Carrying Amount | Term loan |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Term loan | 0 | 9,833
Fair Value |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Borrowings under revolving credit facility | 27,950 | 38,566
Fair Value | Term loan |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Term loan | $ 0 | $ 9,833

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Fair value portion of contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time. + References No definition available. + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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- Details
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- Details
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- Details
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