BUSINESS COMBINATION, ASSETS HELD FOR SALE AND DISCONTINUED OPERATIONS - Loss from Discontinued Operations (Details) - IKONICS - Discontinued Operations, Held-for-sale - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Net sales
Net sales	$ 0	$ 2,203	$ 0	$ 11,028
Cost of goods sold	0	1,945	0	8,265
Gross profit	0	258	0	2,763
Selling, general and administrative expenses	4	760	65	3,375
Research and development expenses	0	148	0	437
Impairment on remeasurement or classification as held for sale	0	0	0	4,541
Loss on sale of net assets held for sale	0	239	0	239
Loss from discontinued operations before other income	(4)	(889)	(65)	(5,829)
Interest expense	0	(12)	0	(12)
Other income	0	0	23	6
Loss from discontinued operations before income tax	(4)	(901)	(42)	(5,835)
Income tax expense		0	0	(8)
Loss from discontinued operations, net of tax	$ (4)	$ (901)	$ (42)	$ (5,843)

Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

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