SUPPLEMENTARY BALANCE SHEET INFORMATION - Narrative (Details)		3 Months Ended		9 Months Ended
	Aug. 09, 2025 USD ($) shares	Sep. 30, 2025 USD ($) shares	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) shares	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)	May 31, 2023 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Inventories, net		$ 7,746,000		$ 7,746,000		$ 0
Depreciation expense		420,000	$ 67,000	472,000	$ 169,000
Gross property and equipment		24,052,000		24,052,000
Less current portion		270,000		270,000
Note receivable, net of current portion		6,787,000		6,787,000
Total note receivable		7,057,000		$ 7,057,000
Series A Preferred Stock
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Stock issued during period (in shares) | shares	250,000
Preferred stock, dividend percentage	10.00%			10.00%
Issuance of preferred stock	$ 2,600,000
Catalyst
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Investment at fair value		$ 953,000		$ 953,000
Enservco
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity method investment, ownership percentage		15.50%		15.50%
Enservco | Common stock
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity method investment, ownership percentage	19.90%
Enservco | Convertible Preferred Stock
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity method investment, ownership percentage		22.00%		22.00%
Equity method investments		$ 0	$ 0	$ 0	$ 0
KBS Builders, Inc. (KBS)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, 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		$ 46,000		$ 46,000
EdgeBuilder, Inc. (EdgeBuilder)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Standard warranty period				25 years
Timber Technologies Solutions, Inc. (TT)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Standard warranty period				50 years
Catalyst
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Notes issued in sale transaction							$ 7,000,000
Total note receivable		$ 6,341,000		$ 6,341,000
Catalyst | Digirad Health Inc
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, 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
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, 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
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Interest rate for notes receivable (as a percent)		0.050		0.050
Original principal amount of notes		$ 670,000		$ 670,000
Less current portion		223,000		223,000
Note receivable, net of current portion		447,000		447,000
Quarterly installment principal receivable				74,000
Total note receivable		$ 670,000		$ 670,000
Enservco
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Investment (in shares) | shares		9,000,000		9,000,000
Total note receivable	$ 1,000
Enservco | Common stock
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Investment (in shares) | shares	9,023,035
Enservco | Preferred Stock
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Investment (in shares) | shares	3,500,000
Enservco | Convertible Preferred Stock
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Investment (in shares) | shares		3,500,000		3,500,000
Land and Building
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross property and equipment		$ 1,800,000		$ 1,800,000
Machinery and equipment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross property and equipment		11,906,000		11,906,000
Machinery and equipment | Energy Services
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross property and equipment		4,295,000		4,295,000
Alliance Drilling Tools, LLC (ADT)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Inventories, net		$ 1,444,000		$ 1,444,000