ASSETS HELD FOR SALE AND DISCONTINUED OPERATIONS - loss from discontinued operations (Details) - USD ($) $ in Thousands	3 Months Ended	5 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022
Cash flow impact of discontinued operations:
Cash flows used in operating activities from discontinued operations			$ 45
Ikonics Inc [Member] | Discontinued Operations, Held-for-sale [Member]
ASSETS HELD FOR SALE AND DISCONTINUED OPERATIONS
Net sales	$ 4,595		8,825
Cost of goods sold	3,097		6,320
Gross profit	1,498		2,505
Selling, general and administrative expenses	1,351		2,615
Research and development expenses	152		289
Impairment on re-measurement or classification as held for sale	619		4,541
Loss from discontinued operations before other income	(624)		(4,940)
Other income	3		6
Loss from operations before income tax	(621)		(4,934)
Income tax (expense) benefit	9		8
Net loss from discontinued operations	$ (630)		(4,942)
Cash flow impact of discontinued operations:
Cash flows used in operating activities from discontinued operations		$ 0	$ 45,000