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PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018
PROPERTY, PLANT AND EQUIPMENT |  |
Gross property, plant and equipment | $ 43,054 | $ 40,765
Less: accumulated depreciation | (28,258) | (26,213)
Net property, plant and equipment | 14,796 | 14,552
Land |  |
PROPERTY, PLANT AND EQUIPMENT |  |
Gross property, plant and equipment | 878 | 878
Buildings |  |
PROPERTY, PLANT AND EQUIPMENT |  |
Gross property, plant and equipment | $ 20,552 | 19,705
Buildings | Minimum |  |
PROPERTY, PLANT AND EQUIPMENT |  |
Estimated Useful Lives | 7 years |
Buildings | Maximum |  |
PROPERTY, PLANT AND EQUIPMENT |  |
Estimated Useful Lives | 40 years |
Operating equipment and property |  |
PROPERTY, PLANT AND EQUIPMENT |  |
Gross property, plant and equipment | $ 11,891 | 11,016
Operating equipment and property | Minimum |  |
PROPERTY, PLANT AND EQUIPMENT |  |
Estimated Useful Lives | 3 years |
Operating equipment and property | Maximum |  |
PROPERTY, PLANT AND EQUIPMENT |  |
Estimated Useful Lives | 15 years |
Furniture and fixtures |  |
PROPERTY, PLANT AND EQUIPMENT |  |
Gross property, plant and equipment | $ 1,999 | 1,785
Furniture and fixtures | Minimum |  |
PROPERTY, PLANT AND EQUIPMENT |  |
Estimated Useful Lives | 5 years |
Furniture and fixtures | Maximum |  |
PROPERTY, PLANT AND EQUIPMENT |  |
Estimated Useful Lives | 7 years |
Vehicles |  |
PROPERTY, PLANT AND EQUIPMENT |  |
Gross property, plant and equipment | $ 7,734 | $ 7,381
Vehicles | Minimum |  |
PROPERTY, PLANT AND EQUIPMENT |  |
Estimated Useful Lives | 5 years |
Vehicles | Maximum |  |
PROPERTY, PLANT AND EQUIPMENT |  |
Estimated Useful Lives | 10 years |

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- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(14)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(8)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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