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SUMMARY OF SIGNIFICANT ACCOUNTING AND BUSINESS POLICIES, Self-insured Insurance and Medical Claims (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016
Reinsurance Retention Policy [Line Items] |  |
Accrual for claims | $ 2,700,000 | $ 3,100,000
Self-insured Insurance [Member] | Maximum [Member] |  |
Reinsurance Retention Policy [Line Items] |  |
Amount retained, per claim | 100,000 |
Medical Claims [Member] | Maximum [Member] |  |
Reinsurance Retention Policy [Line Items] |  |
Amount retained, per claim | $ 175,000 |
Retention percentage of employee higher risk claims | 0.05% |

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- Definition Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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Period Type: | instant

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- Definition Stated amount that is the upper retention limit per entity policy. + References No definition available. + Details
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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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- Details
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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |