Supplementary Balance Sheet Information - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended		6 Months Ended
	May 04, 2026	Aug. 09, 2024	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024	Dec. 31, 2023	May 04, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Inventories, net			$ 9,207		$ 9,207		$ 5,397
Depreciation of property and equipment			700	$ 200	1,237	$ 451
Property and equipment, net			16,653		16,653		10,207
Note receivable, current portion			300		300		335
Note receivable, net of current portion			9,124		9,124		8,876
Impairment of cost method investment					$ 432	$ 1,290
Preferred stock, dividend rate (in percent)					10.00%
Principal and interest			$ 9,424		$ 9,424		$ 9,211
Preferred stock, par value (in usd per share)			$ 0.0001		$ 0.0001		$ 0.0001
Measurement Input, Risk Free Interest Rate | Valuation Technique, Option Pricing Model
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Investment, measurement input			0.040		0.040
Measurement Input, Price Volatility | Valuation Technique, Option Pricing Model
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Investment, measurement input			1.79		1.79
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)		250,000
Preferred stock, dividend rate (in percent)		10.00%
Issuance of preferred stock		$ 2,600
Preferred stock, par value (in usd per share)		$ 0.0001
Catalyst
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Investment carried at cost			$ 953		$ 953		$ 1,385		$ 6,000
Cumulative impairment amount			5,000		5,000
Impairment of cost method investment					400
Enservco
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total market value			$ 264		264
Unrealized loss on investments					$ 491
Enservco | Common stock
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Investment percentage		19.90%	15.50%		15.50%
Enservco | Perpetual Preferred Stock
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Investment (in shares)			3,476,965		3,476,965
Investment percentage			22.00%		22.00%
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)								12.00%
Principal and interest			$ 76		$ 76		111
Edgebuilder
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Standard warranty period					25 years
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
Principal and interest			$ 8,603		$ 8,603		8,206
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)									5.00%
Basis spread on variable rate (as a percent)									5.00%
Catalyst | Digirad Health Inc. | Forecast
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Interest rate for notes receivable (as a percent)	5.00%
Basis spread (percent)	7.00%
MDOS
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Interest rate for notes receivable (as a percent)			5.00%		5.00%
Original principal amount of notes			$ 700		$ 700
Note receivable, current portion			200		200
Note receivable, net of current portion			500		500
Quarterly installment principal receivable					74
Principal and interest			$ 745		$ 745		$ 894
Enservco
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Interest rate for notes receivable (as a percent)		20.00%
Principal and interest		$ 1,000
Share exchange agreement, purchase rights, option period		12 months
Stock price (in usd per share)		$ 0.17	$ 0.04		$ 0.04
Notes receivable term		3 months
Notes receivable, extension term		1 month
Enservco | Minimum Payment By Third Month From Issuance Date
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Quarterly installment principal receivable		$ 600
Notes receivable extended term		4 months
Enservco | Minimum Payment Before Four Months From Issuance Date
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Quarterly installment principal receivable		$ 800
Notes receivable extended term		5 months
Enservco | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Financing receivable, measurement input		0.1536
Enservco | Series A Preferred Stock
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Share exchange agreement, option to exchange, amount		$ 2,500
Enservco | Common stock
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Investment (in shares)		9,023,035
Enservco | Perpetual Preferred Stock
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Investment (in shares)		3,476,965
Land and Building
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Property and equipment, net			$ 600		$ 600
Machinery and equipment | Energy Services
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Property and equipment, net			3,300		3,300
ADT
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Inventories, net			$ 1,600		$ 1,600