ASSETS HELD FOR SALE AND DISCONTINUED OPERATIONS - loss from discontinued operations (Details) - USD ($) $ in Thousands	3 Months Ended	8 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022
ASSETS HELD FOR SALE AND DISCONTINUED OPERATIONS
Interest expense	$ (7,230)		$ (16,691)
Cash flow impact of discontinued operations:
Cash flows used in operating activities from discontinued operations			1,303
Ikonics Inc [Member] | Discontinued Operations, Held-for-sale [Member]
ASSETS HELD FOR SALE AND DISCONTINUED OPERATIONS
Net sales	2,203		11,028
Cost of goods sold	1,945		8,265
Gross profit	258		2,763
Selling, general and administrative expenses	760		3,375
Research and development expenses	148		437
Impairment on re-measurement or classification as held for sale			4,541
Loss on sale of net assets held for sale	239		239
Loss from discontinued operations before other income	(889)		(5,829)
Interest expense	(12)		(12)
Other income			6
Loss from operations before income tax	(901)		(5,835)
Income tax (expense) benefit			(8)
Net loss from discontinued operations	$ (901)		(5,843)
Cash flow impact of discontinued operations:
Cash flows used in operating activities from discontinued operations		$ 0	$ 1,300