Banking Facilities and Debt (Details) $ in Millions			6 Months Ended
	Aug. 03, 2023	May 07, 2015 USD ($)	Jun. 30, 2023 USD ($)	May 02, 2019 USD ($)
Banking facilities and other debt
Total Debt			$ 0.0
Maximum
Banking facilities and other debt
Pro forma Cash Flow Leverage Ratio to be maintained to purchase, redeem or otherwise acquire shares of common stock			3.00
Cash flow leverage ratio		3.50
Revolving Facility
Banking facilities and other debt
Maximum borrowing capacity				$ 75.0
Accordion feature period	4 years	4 years
Maximum borrowing capacity accordion feature		$ 50.0
Letters of credit outstanding			$ 0.3
Revolving Facility | SOFR
Banking facilities and other debt
Interest rate margin (as a percent)	0.10%
Revolving Facility | Minimum
Banking facilities and other debt
Commitment fee (as a percent)	0.225%	0.20%
Revolving Facility | Minimum | LIBOR
Banking facilities and other debt
Interest rate margin (as a percent)		1.00%
Revolving Facility | Minimum | Lender's prime rate
Banking facilities and other debt
Interest rate margin (as a percent)	0.00%	0.00%
Revolving Facility | Minimum | SOFR
Banking facilities and other debt
Interest rate margin (as a percent)	1.00%
Revolving Facility | Maximum
Banking facilities and other debt
Commitment fee (as a percent)	0.35%	0.35%
Revolving Facility | Maximum | LIBOR
Banking facilities and other debt
Interest rate margin (as a percent)		2.00%
Revolving Facility | Maximum | Lender's prime rate
Banking facilities and other debt
Interest rate margin (as a percent)	1.00%	1.00%
Revolving Facility | Maximum | SOFR
Banking facilities and other debt
Interest rate margin (as a percent)	2.00%
Letter of Credit
Banking facilities and other debt
Maximum borrowing capacity			$ 10.0