Net Income Per Share and Weighted Average Shares (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Apr. 29, 2022	Jan. 28, 2022	Oct. 29, 2021	Apr. 30, 2021	Jan. 29, 2021	Oct. 30, 2020	Apr. 29, 2022	Apr. 30, 2021
Reconciliation of Components of Diluted Earnings per Share Computations [Abstract]
Net income per share numerator	$ 27,516	$ 37,624	$ 33,376	$ 33,470	$ 14,000	$ 170,680	$ 98,516	$ 218,150
Net income per share denominator [Abstract]
Weighted average shares (in shares)	23,089,521			23,725,185			23,330,093	23,718,777
Add potential dilution [Abstract]
Nonvested stock awards and units (in shares)	81,379			82,225			79,025	69,228
Diluted weighted average shares (in shares)	23,170,900			23,807,410			23,409,118	23,788,005
Convertible Senior Notes [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Abstract]
Conversion price (in dollars per share)	$ 181.17						$ 181.17
Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Abstract]
Adjusted strike price (in dollars per share)	$ 253.64						$ 253.64