Computation of Earnings Per Common Share - Basic and Diluted Earnings Calculation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 30, 2021	Oct. 24, 2020	Oct. 30, 2021	Oct. 24, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income available to common stockholders (numerator)	$ 28,717	$ 33,926	$ 47,780	$ 38,532
Weighted-average number of common shares (in shares)	30,172,254	31,878,583	30,426,337	31,744,199
Basic earnings per common share (in dollars per share)	$ 0.95	$ 1.06	$ 1.57	$ 1.21
Potential common stock arising from stock options, and unvested restricted share units (in shares)	442,452	546,717	502,553	362,462
Total shares-diluted (in shares)	30,614,706	32,425,300	30,928,890	32,106,661
Diluted earnings per common share (in dollars per share)	$ 0.94	$ 1.05	$ 1.54	$ 1.20
Anti-dilutive weighted shares excluded from the calculation of earnings per common share:
Anti-dilutive weighted shares excluded from the calculation of earnings per share (in shares)	1,117,241	1,440,924	1,191,131	4,477,819
Stock-based awards
Anti-dilutive weighted shares excluded from the calculation of earnings per common share:
Anti-dilutive weighted shares excluded from the calculation of earnings per share (in shares)	218,525	238,226	89,765	245,633
Convertible senior notes
Anti-dilutive weighted shares excluded from the calculation of earnings per common share:
Anti-dilutive weighted shares excluded from the calculation of earnings per share (in shares)	297,367	601,349	500,017	2,116,093
Note Warrant
Anti-dilutive weighted shares excluded from the calculation of earnings per common share:
Anti-dilutive weighted shares excluded from the calculation of earnings per share (in shares)	601,349	601,349	601,349	2,116,093