SUPPLEMENTARY BALANCE SHEET INFORMATION - Narrative (Details)		3 Months Ended			9 Months Ended
	Aug. 09, 2024 USD ($) shares	Sep. 30, 2026 USD ($) shares	Jun. 30, 2026 USD ($) shares	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)	May 31, 2023 USD ($)
Disposal Group, Including Discontinued Operations [Line Items]
Inventories, net		$ 7,254,000			$ 7,254,000		$ 6,988,000
Depreciation expense		723,000		$ 420,000	2,270,000	$ 472,000
Gross property and equipment		25,002,000			25,002,000		24,977,000
Less current portion		277,000			277,000		256,000
Note receivable, net of current portion		9,152,000			9,152,000		8,629,000
Issuance of preferred stock			$ 790,000
Total note receivable		$ 9,429,000			$ 9,429,000		8,885,000
Preferred Stock
Disposal Group, Including Discontinued Operations [Line Items]
Stock issued during period (in shares) | shares			83,000
Series A Preferred Stock
Disposal Group, Including Discontinued Operations [Line Items]
Stock issued during period (in shares) | shares	250,000	82,764
Preferred stock, dividend percentage					10.00%
Issuance of preferred stock	$ 2,600,000	$ 816,000
Investments | Catalyst Parent Common Equity
Disposal Group, Including Discontinued Operations [Line Items]
Investment at fair value		953,000			$ 953,000
Catalyst
Disposal Group, Including Discontinued Operations [Line Items]
Investment at fair value		$ 953,000			$ 953,000		953,000
Enservco | Common stock
Disposal Group, Including Discontinued Operations [Line Items]
Equity method investment, ownership percentage	19.90%
Enservco | Convertible Preferred Stock
Disposal Group, Including Discontinued Operations [Line Items]
Equity method investments				$ 0		$ 0
KBS Builders, Inc. (KBS)
Disposal Group, Including Discontinued Operations [Line Items]
Standard warranty period					12 months
Interest rate for notes receivable (as a percent)		0.12			0.12
Total note receivable		$ 53,000			$ 53,000		32,000
EdgeBuilder, Inc. (EdgeBuilder)
Disposal Group, Including Discontinued Operations [Line Items]
Standard warranty period					25 years
Timber Technologies Solutions, Inc. (TT)
Disposal Group, Including Discontinued Operations [Line Items]
Standard warranty period					50 years
Catalyst
Disposal Group, Including Discontinued Operations [Line Items]
Notes issued in sale transaction								$ 7,000,000
Total note receivable		$ 9,004,000			$ 9,004,000		8,257,000
Catalyst | Digirad Health Inc
Disposal Group, Including Discontinued Operations [Line Items]
Interest rate for notes receivable (as a percent)								0.050
Basis spread on variable rate (as a percent)								5.00%
Catalyst | Digirad Health Inc | Effective Period Two
Disposal Group, Including Discontinued Operations [Line Items]
Interest rate for notes receivable (as a percent)								0.070
Basis spread on variable rate (as a percent)								5.00%
MD Office Solutions
Disposal Group, Including Discontinued Operations [Line Items]
Interest rate for notes receivable (as a percent)		0.050			0.050
Original principal amount of notes		$ 372,000			$ 372,000
Less current portion		223,000			223,000
Note receivable, net of current portion		149,000			149,000
Quarterly installment principal receivable					74,000
Total note receivable		372,000			372,000		596,000
Enservco
Disposal Group, Including Discontinued Operations [Line Items]
Total note receivable	$ 1,000
Enservco | Common stock
Disposal Group, Including Discontinued Operations [Line Items]
Investment (in shares) | shares	9,023,035
Enservco | Preferred Stock
Disposal Group, Including Discontinued Operations [Line Items]
Investment (in shares) | shares	3,500,000
Machinery and equipment
Disposal Group, Including Discontinued Operations [Line Items]
Gross property and equipment		$ 14,827,000			$ 14,827,000		$ 12,750,000