Debt (Narrative) (Details) - USD ($)		1 Months Ended	2 Months Ended	12 Months Ended
	Apr. 16, 2020	Mar. 26, 2022	Mar. 23, 2022	Jan. 29, 2022	Jan. 30, 2021	Nov. 30, 2021
Credit Agreement
Debt Instrument [Line Items]
Line of credit facility, exercised	$ 50,000,000
Credit facility interest rate description				The Credit Agreement bears interest, at our option, at (1) the agent bank’s prime rate as defined in the Credit Agreement plus 1.0%, with the prime rate defined as the greater of (a) the Federal Fund rate plus 0.50% or (b) the interest rate announced from time to time by the agent bank as its “prime rate” or (2) LIBOR plus 1.50% to 2.50%, depending on our achievement of certain performance criteria. If the stated LIBOR rate is less than 0.75%, the LIBOR rate for purposes of calculating the interest rate under the credit facility shall be 0.75%.
Line of credit facility, expiration date				Mar. 27, 2022
Amount outstanding during period				$ 0	$ 0
Maximum amount outstanding during period				0	$ 8,700,000
Outstanding letters of credit				700,000
Line of credit, available borrowing amount				$ 99,300,000
Covenant description				(1) Total Shareholders’ Equity (as defined in the Credit Agreement) will not fall below $250 million at the end of each fiscal quarter; (2) the ratio of funded debt plus three times rent expense to EBITDA (as defined in the Credit Agreement) plus rent expense will not exceed 3.0 to 1.0, except for the fiscal quarters ending on or about July 31, 2020; October 31, 2020; and January 31, 2021; (3) the aggregate amount of cash dividends for a fiscal year will not exceed $10 million; and (4) distributions in the form of redemptions of Equity Interests (as defined in the Credit Agreement) can be made solely with cash on hand so long as before and immediately after such distributions there are no revolving loans outstanding under the Credit Agreement. Should a default condition be reported, the lenders may preclude additional borrowings and call all loans and accrued interest at their discretion. We were in compliance with these covenants at January 29, 2022.
Credit Agreement | Minimum
Debt Instrument [Line Items]
Aggregate dollar amount of acquisitions						$ 10,000,000
Line of credit facility, revolving commitment	50,000,000
Line of credit swing line sublimit	$ 10,000,000
Rent expenses	2.50%
Commitment fee percentage rate				0.30%
Credit Agreement | Maximum
Debt Instrument [Line Items]
Aggregate dollar amount of acquisitions						$ 75,000,000
Line of credit facility, revolving commitment	$ 100,000,000
Line of credit swing line sublimit	$ 15,000,000
Rent expenses	3.00%
Commitment fee percentage rate				0.40%
New Credit Agreement | Subsequent Event
Debt Instrument [Line Items]
Line of credit facility, expiration date			Mar. 23, 2027
Maximum amount outstanding during period			$ 100,000,000
Interest rate			3.00%
Maximum dividends or share repurchases per year without restriction			$ 15,000,000
Minimum maintenance of payment conditions for dividends and share repurchases			15,000,000
Line of credit swing line sublimit			15,000,000
Secured or unsecured Debt		$ 20,000,000
Line of credit facility minimum net worth			$ 250,000,000
New Credit Agreement | Minimum | Subsequent Event
Debt Instrument [Line Items]
Commitment fee percentage rate		0.20%
New Credit Agreement | Maximum | Subsequent Event
Debt Instrument [Line Items]
Rent expenses		3.50%
Commitment fee percentage rate		0.30%
New Credit Agreement | Base Rate | Minimum | Subsequent Event
Debt Instrument [Line Items]
Interest rate			0.00%
New Credit Agreement | Base Rate | Maximum | Subsequent Event
Debt Instrument [Line Items]
Interest rate			1.00%
New Credit Agreement | SOFR plus | Minimum | Subsequent Event
Debt Instrument [Line Items]
Interest rate			0.90%
New Credit Agreement | SOFR plus | Maximum | Subsequent Event
Debt Instrument [Line Items]
Interest rate			1.90%