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 of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

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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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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 ($)	3 Months Ended		6 Months Ended
PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($)	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Depreciable property, plant and equipment	$ 32,947,148		$ 32,947,148		$ 36,621,187
Less: Accumulated depreciation and amortization	(28,628,288)		(28,628,288)		(32,207,829)
Net property, plant and equipment	4,318,860		4,318,860		4,413,358
Gain on disposal of machinery and equipment	836,500
Depreciation expense	45,998	$ 58,566	94,498	$ 117,302
Building [Member]
Property, Plant and Equipment [Line Items]
Depreciable property, plant and equipment	5,828,960		5,828,960		5,828,960
Furniture, fixtures, computer hardware and computer software [Member]
Property, Plant and Equipment [Line Items]
Depreciable property, plant and equipment	489,421		489,421		489,421
Manufacturing machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Depreciable property, plant and equipment	$ 26,628,767		$ 26,628,767		$ 30,302,806