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SUMMARY OF SIGNIFICANT ACCOUNTING AND BUSINESS POLICIES (Details) (USD $) | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Risks and Uncertainties [Abstract] |  |  |
Threshold percentage of sales (in hundredths) | 10.00% |  |
Revenue Recognition [Abstract] |  |  |
Revenues recognized on contracts in process | $ 12,700,000 | $ 15,900,000 | $ 9,800,000
Minimum contract period | 1 year |  |
Maximum contract period | 2 years |  |
Unbilled costs and estimated earnings included in accounts receivable | 5,100,000 | 8,500,000 |
Self-insured Insurance and Medical Claims [Abstract] |  |  |
Workers compensation insurance reserves, per claim | 100,000 |  |
Medical insurance reserves, per claim | 250,000 |  |
Accrual for claims | $ 2,100,000 | $ 1,800,000 |
Buildings [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life | 20 years |  |
Buildings [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life | 39 years |  |
Building improvements [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life | 10 years |  |
Building improvements [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life | 20 years |  |
Furniture, Fixtures and Equipment [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life | 3 years |  |
Furniture, Fixtures and Equipment [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life | 20 years |  |
Leasehold improvements [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life | Shorter of estimated useful life or related lease term |  |

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