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Summary of Finite Lived Intangibles Assets by Major Class (Detail) (Finite-Lived Intangible Assets [Member], USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Customer-Related Intangible Assets |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | $ 978 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FairValueByAssetClassAxis = us-gaap_FiniteLivedIntangibleAssetsMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelatedIntangibleAssetsMember | $ 1,038 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FairValueByAssetClassAxis = us-gaap_FiniteLivedIntangibleAssetsMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelatedIntangibleAssetsMember
Accumulated amortization | (636)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FairValueByAssetClassAxis = us-gaap_FiniteLivedIntangibleAssetsMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelatedIntangibleAssetsMember | (582)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FairValueByAssetClassAxis = us-gaap_FiniteLivedIntangibleAssetsMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelatedIntangibleAssetsMember
Finite Lived Intangibles | 342 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FairValueByAssetClassAxis = us-gaap_FiniteLivedIntangibleAssetsMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelatedIntangibleAssetsMember | 456 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FairValueByAssetClassAxis = us-gaap_FiniteLivedIntangibleAssetsMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelatedIntangibleAssetsMember
Marketing-Related Intangible Assets |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | 1,588 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FairValueByAssetClassAxis = us-gaap_FiniteLivedIntangibleAssetsMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_MarketingRelatedIntangibleAssetsMember | 1,436 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FairValueByAssetClassAxis = us-gaap_FiniteLivedIntangibleAssetsMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_MarketingRelatedIntangibleAssetsMember
Accumulated amortization | (1,447)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FairValueByAssetClassAxis = us-gaap_FiniteLivedIntangibleAssetsMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_MarketingRelatedIntangibleAssetsMember | (737)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FairValueByAssetClassAxis = us-gaap_FiniteLivedIntangibleAssetsMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_MarketingRelatedIntangibleAssetsMember
Finite Lived Intangibles | $ 141 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FairValueByAssetClassAxis = us-gaap_FiniteLivedIntangibleAssetsMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_MarketingRelatedIntangibleAssetsMember | $ 699 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FairValueByAssetClassAxis = us-gaap_FiniteLivedIntangibleAssetsMember / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_MarketingRelatedIntangibleAssetsMember

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Details
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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Period Type: | instant