INVENTORIES (Details) - USD ($)	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Inventory [Line Items]
Inventory adjustment for lower of cost or NRV	$ 113,000.0	$ 175,000.0	$ 0	$ 288,000	$ 0
Raw materials	2,366,000			2,366,000		$ 4,485,000
Finished goods	895,000			895,000		1,284,000
Processing costs	729,000			729,000		1,165,000
Total inventories for sale	$ 3,990,000			$ 3,990,000		$ 6,934,000