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 Ended				For the Six Months Ended
	July 28, 2018		July 29, 2017		July 28, 2018		July 29, 2017
Net income available to common stockholders (numerator)	$	29,900	$	43,708	$	47,131	$	82,504

Weighted-average number of common shares (denominator)	31,206,340		31,084,019		31,198,349		31,220,719

Basic earnings per common share	$	0.96	$	1.41	$	1.51	$	2.64

Weighted-average number of common shares	31,206,340		31,084,019		31,198,349		31,220,719
Potential shares of common stock arising from stock options, and unvested restricted share units	627,477		580,129		615,014		566,466
Potential shares of common stock issuable on conversion of 0.75% convertible senior notes due 2021⁽¹⁾	120,196		—		367,597		—
Total shares-diluted (denominator)	31,954,013		31,664,148		32,180,960		31,787,185

Diluted earnings per common share	$	0.94	$	1.38	$	1.46	$	2.60

Anti-dilutive weighted shares excluded from the calculation of earnings per common share:
Stock-based awards	50,366		85,709		54,554		90,865
0.75% convertible senior notes due 2021	4,885,538		5,005,734		4,638,137		5,005,734
Warrants	5,005,734		5,005,734		5,005,734		5,005,734
Total	9,941,638		10,097,177		9,698,425		10,102,333

⁽¹⁾Under the treasury stock method, the convertible senior notes will have a dilutive impact on earnings per common share if the Company’s average stock price for the period exceeds the conversion price for the convertible senior notes of $96.89 per share. The warrants associated with the Company’s convertible senior notes will have a dilutive impact on earnings per common share if the Company’s average stock price for the period exceeds the warrant strike price of $130.43 per share. During the first and second quarters of fiscal 2019, the Company’s average stock price of $110.46 and $99.27, respectively, each exceeded the conversion price for the convertible senior notes. As a result, shares presumed to be issuable under the convertible senior notes that were dilutive during each period are included in the calculation of diluted earnings per share for the three and six months ended July 28, 2018. As the Company’s average stock price did not exceed the strike price for the warrants, the underlying common shares were anti-dilutive as reflected in the table above.