SHAREHOLDERS' EQUITY - Narrative (Details) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
	Dec. 31, 2018 shares	Dec. 31, 2024 USD ($) plan $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2021 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of compensation plans (in plans) \| plan		2
Share based compensation cost \| $		$ 2.8	$ 3.0	$ 4.5
Employee stock option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)		489,383	541,657	509,212	463,304
Share based compensation cost \| $		$ 0.5	$ 0.9	$ 1.3
Share based compensation cost, future income tax benefits \| $		0.2	0.2	0.2
Total intrinsic value of options exercised \| $		1.0	0.3	0.3
Unrecognized compensation costs, unvested stock options \| $		$ 0.8
Weighted average period of recognition (years)		2 years 8 months 23 days
Total fair value of stock options vested \| $		$ 1.0	0.9	1.3
Restricted stock units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period of recognition (years)		1 year 8 months 26 days
Unrecognized compensation cost \| $		$ 5.8
Restricted stock units (RSUs) \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)		5,736
Restricted stock units (RSUs) \| Director \| Selling, distribution and administrative expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation cost \| $		$ 0.2	0.2	0.2
2010 Long-term Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period (years)		10 years
Number of shares authorized for issuance (in shares)		7,500,000
2010 Long-term Stock Incentive Plan \| Stock option and restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted per calendar year in total, maximum (in shares)		1,500,000
2010 Long-term Stock Incentive Plan \| Employee stock option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)		249,064
2010 Long-term Stock Incentive Plan \| Restricted stock units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock outstanding (in shares)		0
2020 Omnibus Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period (years)		10 years
Number of shares authorized for issuance (in shares)		7,500,000
Cash performance awards \| $		$ 10.0
2020 Omnibus Stock Incentive Plan \| Employee stock option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted per calendar year in total, maximum (in shares)		1,500,000
Number of options outstanding (in shares)		240,319
2020 Omnibus Stock Incentive Plan \| Restricted stock units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock outstanding (in shares)		335,518
2020 Omnibus Stock Incentive Plan \| Restricted stock units (RSUs) \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock outstanding (in shares)		11,859
2018 Employee Stock Purchase Plan \| Employee stock option \| Selling, distribution and administrative expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, expense \| $		$ 0.6	$ 0.4	$ 0.5
2018 Employee Stock Purchase Plan \| Employee stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for issuance (in shares)	500,000	183,709
Stock plan offering period (months)	6 months
Employee stock purchase plan, maximum shares available to purchase (in shares)	10,000
Employee stock purchase plan, purchase price of stock, percent	85.00%
Stock issued during period under ESPP (in shares)		55,181	58,863	53,143
Average purchase price of shares issues under ESPP (in dollars per share) \| $ / shares		$ 27.83	$ 23.83	$ 26.16
Continuing operations \| Restricted stock units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation cost \| $		$ 1.7	$ 1.7	$ 2.7

GLOBAL INDUSTRIAL Co 10-K