SHAREHOLDERS' EQUITY - Accumulated other comprehensive loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 01, 2025	Feb. 03, 2024	Jan. 28, 2023
BALANCE	$ 567,570	$ 426,113	$ 323,387
Other comprehensive loss, net of tax	(374)	(7,686)	(18,626)
BALANCE	605,949	567,570	426,113
Foreign Currency Translation
BALANCE	(1,098)	(1,213)	(788)
Other comprehensive income (loss) before reclassifications	(4,691)	115	(425)
Amounts reclassified from accumulated other comprehensive loss	0	0	0
Tax benefit	0	0	0
Net reclassifications	0	0	0
Other comprehensive loss, net of tax	(4,691)	115	(425)
BALANCE	(5,789)	(1,098)	(1,213)
Pension and Other Postretirement Transactions
BALANCE	(33,406)	(25,537)	(7,818)
Other comprehensive income (loss) before reclassifications	(1,284)	(10,506)	(19,776)
Amounts reclassified from accumulated other comprehensive loss	8,695	3,552	2,991
Tax benefit	(2,238)	(915)	(934)
Net reclassifications	6,457	2,637	2,057
Other comprehensive loss, net of tax	5,173	(7,869)	(17,719)
BALANCE	(28,233)	(33,406)	(25,537)
Accumulated Other Comprehensive (Loss) Income
BALANCE	(34,504)	(26,750)	(8,606)
Other comprehensive income (loss) before reclassifications	(5,975)	(10,391)	(20,201)
Amounts reclassified from accumulated other comprehensive loss	8,695	3,552	2,991
Tax benefit	(2,238)	(915)	(934)
Net reclassifications	6,457	2,637	2,057
Other comprehensive loss, net of tax	482	(7,754)	(18,144)
BALANCE	$ (34,022)	$ (34,504)	$ (26,750)