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Fair Value of Derivative Financial Instruments and their Classification on Consolidated Balance Sheet (Detail) (Accrued Liabilities [Member], USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Accrued Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Swap | $ 381 us-gaap_InterestRateDerivativeLiabilitiesAtFairValue / us-gaap_BalanceSheetLocationAxis = us-gaap_AccruedLiabilitiesMember | $ 927 us-gaap_InterestRateDerivativeLiabilitiesAtFairValue / us-gaap_BalanceSheetLocationAxis = us-gaap_AccruedLiabilitiesMember

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Data Type: | xbrli:stringItemType
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- Definition Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611 + Details
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