DESCRIPTION OF BUSINESS (Details)			12 Months Ended
	Aug. 22, 2025 shares	Aug. 09, 2024	Dec. 31, 2025 region Country Segment shares	Dec. 31, 2024 shares	Sep. 30, 2024 USD ($)
Description of Business [Line Items]
Number of reportable segments | Segment			4
Common stock, shares, issued (in shares)			5,366,000	4,033,000
Series A Cumulative Perpetual Preferred Stock
Description of Business [Line Items]
Preferred stock, dividend percentage		10.00%	10.00%
Convertible Preferred Stock | Enservco
Description of Business [Line Items]
Equity method investments | $					$ 0
Star Equity Holdings, Inc. | Series A Cumulative Perpetual Preferred Stock
Description of Business [Line Items]
Automatically converted into the right to receive (in shares)	1
Preferred stock, dividend percentage	10.00%
Star Equity Holdings, Inc. | Common Stock
Description of Business [Line Items]
Automatically converted into the right to receive (in shares)	0.23
Common stockholders received shares (in shares)	744,291
Common stock, shares, issued (in shares)	0
Star Equity Holdings, Inc. | Preferred stock
Description of Business [Line Items]
Common stockholders received shares (in shares)	2,690,637
Hudson Global, Inc.
Description of Business [Line Items]
Number of countries in which entity operates | Country			18
Number of regions in which entity operates | region			3