Note 13 - Share-Based Compensation - Stock Option Activity (Details) - $ / shares	3 Months Ended		9 Months Ended
	Nov. 02, 2019	Nov. 03, 2018	Nov. 02, 2019	Nov. 03, 2018
Balance, total number of stock options (in shares)	39,667	44,667	42,667	81,042
Balance, weighted-average grant date fair value (in dollars per share)	$ 8.84	$ 8.32	$ 8.64	$ 6.28
Granted, total number of stock options (in shares)	0	0	0	0
Granted, weighted-average grant date fair value (in dollars per share)	$ 0	$ 0	$ 0	$ 0
Exercised, total number of stock options (in shares)	(2,000)	0	(3,000)	(32,375)
Exercised, weighted-average grant date fair value (in dollars per share)	$ 4.64	$ 0	$ 6.00	$ 3.52
Forfeited, total number of stock options (in shares)	0	0	(2,000)	0
Forfeited, weighted-average grant date fair value (in dollars per share)	$ 0	$ 0	$ 4.57	$ 0
Expired, total number of stock options (in shares)	0	0	0	(4,000)
Expired, weighted-average grant date fair value (in dollars per share)	$ 0	$ 0	$ 0	$ 5.80
Balance, total number of stock options (in shares)	37,667	44,667	37,667	44,667
Balance, weighted-average grant date fair value (in dollars per share)	$ 9.06	$ 8.32	$ 9.06	$ 8.32