INCOME TAXES - Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Income tax reconciliation
Earnings before provision for income taxes	$ 32,032	$ 39,836
Reconciliation, amount
Tax provision at U.S. federal statutory tax rate	6,727
State and local taxes, net of federal income tax effect	1,439
Effect of cross-border tax laws	(214)
Nontaxable and nondeductible items	(267)
Changes in unrecognized tax benefits	(106)
Total provision	$ 8,954	$ 9,516
Tax Jurisdiction of Domicile [Extensible Enumeration]	UNITED STATES	UNITED STATES
Reconciliation, percent
Tax provision at U.S. federal statutory tax rate	21.00%	21.00%
State and local taxes, net of federal income tax effect	4.50%	4.00%
Foreign income tax rate differences		0.90%
Share-based compensation		(1.60%)
Other		(0.40%)
Effect of cross-border tax laws	(0.70%)
Nontaxable and nondeductible items	(0.80%)
Changes in unrecognized tax benefits	(0.30%)
Effective tax rate	28.00%	23.90%
Effective Income Tax Rate Reconciliation, State and Local Jurisdiction, Contribution Greater than 50 Percent, Tax Effect [Extensible Enumeration]	WISCONSIN
Foreign
Reconciliation, amount
Change in valuation allowance	$ 1,541
Other	$ (166)
Reconciliation, percent
Change in valuation allowance	4.80%
Other	(0.50%)