Consolidated Statements of Stockholders' Equity - USD ($)	Total	Class A Common Stock	Class B Common Stock	Common Stock	Common Stock Class A Common Stock	Common Stock Class B Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning Balance (in shares) at Feb. 02, 2019					21,642,000	7,844,000
Beginning Balance at Feb. 02, 2019	$ 163,327,000			$ 29,000			$ 149,737,000	$ 13,335,000	$ 226,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	22,622,000							22,622,000
Dividends declared	(29,677,000)							(29,677,000)
Shares converted by founders (in shares)					438,000	438,000
Stock-based compensation expense	2,136,000						2,136,000
Restricted stock (in shares)					70,000
Exercise of stock options (in shares)					181,000
Exercise of stock options	1,590,000			1,000			1,589,000
Taxes paid in lieu of shares issued for share-based compensation (in shares)					(8,000)
Taxes paid in lieu of shares issued for share-based compensation	(85,000)						(85,000)
Net change in unrealized gain on available-for-sale securities	(12,000)								(12,000)
Ending Balance (in shares) at Feb. 01, 2020					22,323,000	7,406,000
Ending Balance at Feb. 01, 2020	159,901,000			30,000			153,377,000	6,280,000	214,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(1,145,000)							(1,145,000)
Shares converted by founders (in shares)					100,000	100,000
Stock-based compensation expense	2,036,000						2,036,000
Restricted stock (in shares)					51,000
Exercise of stock options (in shares)					3,000
Exercise of stock options	24,000						24,000
Net change in unrealized gain on available-for-sale securities	(194,000)								(194,000)
Ending Balance (in shares) at Jan. 30, 2021		22,477,000	7,306,000		22,477,000	7,306,000
Ending Balance at Jan. 30, 2021	160,622,000			30,000			155,437,000	5,135,000	20,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	64,249,000							64,249,000
Dividends paid ($2.00 per share)	(61,630,000)							(61,630,000)
Stock-based compensation expense	$ 1,920,000						1,920,000
Restricted stock (in shares)					20,000
Exercise of stock options (in shares)	1,221,972				1,222,000
Exercise of stock options	$ 9,573,000			1,000			9,572,000
Net change in unrealized gain on available-for-sale securities	(21,000)								(21,000)
Ending Balance (in shares) at Jan. 29, 2022		23,719,000	7,306,000		23,719,000	7,306,000
Ending Balance at Jan. 29, 2022	$ 174,713,000			$ 31,000			$ 166,929,000	$ 7,754,000	$ (1,000)