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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 5) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 item | Dec. 31, 2013 | Dec. 31, 2012
Segment Reporting |  |  |
Number of Operating Segments | 2 us-gaap_NumberOfOperatingSegments |  |
Number of Reportable Segments | 1 us-gaap_NumberOfReportableSegments |  |
Self-insurance Reserves |  |  |
Period for reviewing actual expenditure to determine self-insurance reserve | 12 months |  |
Capitalized Interest |  |  |
Interest Costs Capitalized | $ 152 us-gaap_InterestCostsCapitalized | $ 0 us-gaap_InterestCostsCapitalized | $ 0 us-gaap_InterestCostsCapitalized
Customer Relationships [Member] |  |  |
Finite-lived intangible assets |  |  |
Net intangible asset | $ 7,400 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | $ 8,500 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember |

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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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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
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