Note 6 - Retirement and Other Benefit Plans - Amounts Recognized in the Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Feb. 01, 2020	Feb. 02, 2019
Prepaid pension costs	$ 50,660	$ 47,826
Pension Plan [Member]
Prepaid pension costs	50,660	47,826
Accrued benefit liabilities (current liability)	(2,405)	(1,663)
Accrued benefit liabilities (noncurrent liability)	(8,361)	(6,905)
Net amount recognized at end of year	39,894	39,258
Other Postretirement Benefits Plan [Member]
Prepaid pension costs	0	0
Accrued benefit liabilities (current liability)	(200)	(242)
Accrued benefit liabilities (noncurrent liability)	(1,171)	(1,219)
Net amount recognized at end of year	$ (1,371)	$ (1,461)