SHAREHOLDER'S EQUITY - Accumulated other comprehensive loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2026	Feb. 01, 2025	Feb. 03, 2024
SHAREHOLDERS' EQUITY
BALANCE	$ 605,949	$ 567,570	$ 426,113
Other comprehensive income (loss), net of tax	16,161	(374)	(7,686)
BALANCE	608,956	605,949	567,570
Foreign Currency Translation
SHAREHOLDERS' EQUITY
BALANCE	(5,789)	(1,098)	(1,213)
Other comprehensive income (loss) before reclassifications	8,292	(4,691)	115
Amounts reclassified from accumulated other comprehensive loss	0	0	0
Tax benefit	0	0	0
Net reclassifications	0	0	0
Other comprehensive income (loss), net of tax	8,292	(4,691)	115
BALANCE	2,503	(5,789)	(1,098)
Pension and Other Postretirement Transactions
SHAREHOLDERS' EQUITY
BALANCE	(28,233)	(33,406)	(25,537)
Other comprehensive income (loss) before reclassifications	2,268	(1,284)	(10,506)
Amounts reclassified from accumulated other comprehensive loss	6,578	8,695	3,552
Tax benefit	(1,692)	(2,238)	(915)
Net reclassifications	4,886	6,457	2,637
Other comprehensive income (loss), net of tax	7,154	5,173	(7,869)
BALANCE	(21,079)	(28,233)	(33,406)
Accumulated Other Comprehensive (Loss) Income
SHAREHOLDERS' EQUITY
BALANCE	(34,022)	(34,504)	(26,750)
Other comprehensive income (loss) before reclassifications	10,560	(5,975)	(10,391)
Amounts reclassified from accumulated other comprehensive loss	6,578	8,695	3,552
Tax benefit	(1,692)	(2,238)	(915)
Net reclassifications	4,886	6,457	2,637
Other comprehensive income (loss), net of tax	15,446	482	(7,754)
BALANCE	$ (18,576)	$ (34,022)	$ (34,504)