Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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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.

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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.

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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.

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PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Property, plant and equipment
Property, plant and equipment, gross	$ 97,761		$ 97,761		$ 90,361
Less accumulated depreciation	(48,290)		(48,290)		(42,326)
Property, plant and equipment, net	49,471		49,471		48,035
Depreciation expense	2,315	$ 1,960	6,780	$ 5,820
Land
Property, plant and equipment
Property, plant and equipment, gross	970		970		981
Building and improvements
Property, plant and equipment
Property, plant and equipment, gross	13,080		13,080		13,054
Machinery, equipment, tools and dies
Property, plant and equipment
Property, plant and equipment, gross	68,196		68,196		60,755
Furniture, fixtures and other
Property, plant and equipment
Property, plant and equipment, gross	$ 15,515		$ 15,515		$ 15,571