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PROPERTY, PLANT AND EQUIPMENT (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Jan. 31, 2017 a
Property, plant and equipment |  |  |  |
Property, plant and equipment, gross | $ 125,274,000 | $ 117,982,000 |  |
Accumulated depreciation and amortization | (52,002,000) | (49,254,000) |  |
Total property, plant and equipment | 73,272,000 | 68,728,000 |  |
Depreciation expense | 4,700,000 | 4,400,000 | $ 4,300,000 |
Interest Costs Capitalized | 200,000 | 0 | $ 0 |
Real estate held for sale | 500,000 |  |  |
Impairment of real estate | 200,000 |  |  |
Land and improvements |  |  |  |
Property, plant and equipment |  |  |  |
Property, plant and equipment, gross | 1,996,000 | 2,518,000 |  |
Buildings and improvements |  |  |  |
Property, plant and equipment |  |  |  |
Property, plant and equipment, gross | 30,277,000 | 30,013,000 |  |
Machinery and equipment |  |  |  |
Property, plant and equipment |  |  |  |
Property, plant and equipment, gross | 23,699,000 | 22,293,000 |  |
Furniture and fixtures |  |  |  |
Property, plant and equipment |  |  |  |
Property, plant and equipment, gross | 19,962,000 | 18,964,000 |  |
Computer software and hardware |  |  |  |
Property, plant and equipment |  |  |  |
Property, plant and equipment, gross | $ 49,340,000 | $ 44,194,000 |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Subsequent Event |  |  |  |
Property, plant and equipment |  |  |  |
Acre of land | a |  |  |  | 53

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