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Computation of Earnings Per Common Share (Tables)
 9 Months Ended
Oct. 30, 2021
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share Reconciliation
The following table sets forth the computation of basic and diluted earnings per common share (dollars in thousands, except per share amounts):
 For the Three Months EndedFor the Nine Months Ended
 October 30, 2021October 24, 2020October 30, 2021October 24, 2020
Net income available to common stockholders (numerator)$28,717 $33,926 $47,780 $38,532 
Weighted-average number of common shares (denominator)30,172,254 31,878,583 30,426,337 31,744,199 
Basic earnings per common share$0.95 $1.06 $1.57 $1.21 
Weighted-average number of common shares30,172,254 31,878,583 30,426,337 31,744,199 
Potential shares of common stock arising from stock options, and unvested restricted share units442,452 546,717 502,553 362,462 
Total shares-diluted (denominator)30,614,706 32,425,300 30,928,890 32,106,661 
Diluted earnings per common share$0.94 $1.05 $1.54 $1.20 
Anti-dilutive weighted shares excluded from the calculation of earnings per common share:
Stock-based awards218,525 238,226 89,765 245,633 
0.75% convertible senior notes due 2021(1) (2)
297,367 601,349 500,017 2,116,093 
Warrants(1) (2)
601,349 601,349 601,349 2,116,093 
Total 1,117,241 1,440,924 1,191,131 4,477,819 

(1) The company used the treasury stock method for calculating any potential dilutive impact on earnings per common share if our average stock price for the period exceeded the $96.89 per share conversion price. There was no dilutive impact on earnings per common share during any of the periods presented as our average stock price did not exceed the per share conversion price and the 2021 Convertible Notes (as defined in Note 13) matured on September 15, 2021. The warrants associated with our 2021 Convertible Notes will have a dilutive impact on earnings per common share if our average stock price for the period exceeds the $130.43 per share warrant strike price. As our average stock price did not exceed the strike price for the warrants for any of the periods presented, the underlying common shares were anti-dilutive as reflected in the table above. The warrants will expire in ratable portions on a series of expiration dates commencing on December 15, 2021 and concluding on May 9, 2022.

(2) In connection with the offering of the 2021 Convertible Notes, we entered into convertible note hedge transactions with counterparties for the purpose of reducing the potential dilution to common stockholders from the conversion of the 2021 Convertible Notes and offsetting any potential cash payments in excess of the principal amount of the 2021 Convertible Notes. Prior to conversion, the convertible note hedge was not included for purposes of the calculation of earnings per common share as its effect would be anti-dilutive. Upon any conversion, the convertible note hedge was expected to offset the dilutive effect of the 2021 Convertible Notes when the average stock price for the period was above $96.89 per share. The 2021 Convertible Notes matured on September 15, 2021. The convertible note hedge transactions expired on September 13, 2021. See Note 13, Debt, for additional information related to our 2021 Convertible Notes, warrant transactions, and hedge transactions.
In connection with the purchase of $401.7 million of the 2021 Convertible Notes in fiscal 2021 and $25.0 million in fiscal 2020, we unwound convertible note hedge transactions and warrants proportionately to the number of 2021 Convertible Notes, resulting in a decrease in the number of excluded weighted shares.