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v3.10.0.1

PROPERTY, PLANT AND EQUIPMENT (Details) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Aug. 31, 2018 USD ($) a | Jun. 30, 2018 USD ($) ft² | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Jan. 31, 2017 a
Property, plant and equipment |  |  |  |  |  |
Property, plant and equipment, gross |  |  | $ 131,779,000 | $ 128,778,000 |  |
Accumulated depreciation and amortization |  |  | (67,718,000) | (59,672,000) |  |
Total property, plant and equipment |  |  | 64,061,000 | 69,106,000 |  |
Depreciation expense |  |  | 9,800,000 | 8,500,000 | $ 4,700,000 |
Interest costs capitalized |  |  | 0 | 100,000 | 199,000 |
Real estate held for sale |  |  |  |  | 500,000 |
Impairment of real estate |  |  |  |  | 200,000 |
Proceeds from sale of property, plant and equipment |  |  | 5,045,000 | 521,000 | 0 |
Gain (loss) on sale of property |  |  | 3,990,000 | (284,000) | (149,000) |
Impairment of long-lived assets |  |  | 0 | 113,000 | $ 221,000 |
Land and improvements |  |  |  |  |  |
Property, plant and equipment |  |  |  |  |  |
Property, plant and equipment, gross |  |  | 518,000 | 841,000 |  |
Buildings and improvements |  |  |  |  |  |
Property, plant and equipment |  |  |  |  |  |
Property, plant and equipment, gross |  |  | 32,925,000 | 30,760,000 |  |
Machinery and equipment |  |  |  |  |  |
Property, plant and equipment |  |  |  |  |  |
Property, plant and equipment, gross |  |  | 25,691,000 | 25,160,000 |  |
Furniture and fixtures |  |  |  |  |  |
Property, plant and equipment |  |  |  |  |  |
Property, plant and equipment, gross |  |  | 20,245,000 | 20,385,000 |  |
Computer software and hardware |  |  |  |  |  |
Property, plant and equipment |  |  |  |  |  |
Property, plant and equipment, gross |  |  | 52,400,000 | $ 51,632,000 |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |  |  |  |
Property, plant and equipment |  |  |  |  |  |
Acre of land | a |  |  |  |  |  | 53
Provo, Utah |  |  |  |  |  |
Property, plant and equipment |  |  |  |  |  |
Acre of land | a | 8 |  |  |  |  |
Proceeds from sale of property, plant and equipment | $ 2,700,000 |  |  |  |  |
Impairment of long-lived assets |  |  | 1,700,000 |  |  |
MEXICO |  |  |  |  |  |
Property, plant and equipment |  |  |  |  |  |
Area of real estate property | ft² |  | 29,300 |  |  |  |
Proceeds from sale of property, plant and equipment |  | $ 2,600,000 |  |  |  |
Gain (loss) on sale of property |  |  | $ 2,300,000 |  |  |

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