The Company calculates earnings per share in accordance with ASC 260, Earnings Per Share, which requires a dual presentation of basic and diluted earnings per share. Basic earnings per share is calculated by dividing net income by the weighted-average shares of common stock outstanding, reduced by shares repurchased and held in treasury, during the period. Diluted earnings per share represents basic earnings per share adjusted to include the potentially dilutive effect of outstanding share option awards, nonvested share awards and nonvested share unit awards. During periods of net loss, diluted loss per share is equal to basic loss per share because the antidilutive effect of potential common shares is disregarded.

The following table sets forth the computation of basic and diluted earnings per common share:

	13 Weeks Ended
	March 31, 2019		April 1, 2018
	(In thousands, except per share data)
Net income (loss)	$	1,664	$	(1,309	)
Weighted-average shares of common stock outstanding:
Basic		21,029		20,942
Dilutive effect of common stock equivalents arising from share option, nonvested share and nonvested share unit awards		25		—
Diluted		21,054		20,942
Basic earnings (loss) per share	$	0.08	$	(0.06	)
Diluted earnings (loss) per share	$	0.08	$	(0.06	)
Antidilutive share option awards excluded from diluted calculation		422		183
Antidilutive nonvested share and nonvested share unit awards excluded from diluted calculation		406		387

The computation of diluted earnings per share for the 13 weeks ended March 31, 2019 does not include certain share option awards that were outstanding and antidilutive, since the exercise prices of these share option awards exceeded the average market price of the Company’s common shares. Additionally, the computation of diluted earnings per share for the 13 weeks ended April 1, 2018 excludes all potential share option awards since the Company reported a net loss, and the effect of their inclusion would have been antidilutive (i.e., including such share option awards would result in higher earnings per share).

The computation of diluted earnings per share for the 13 weeks ended March 31, 2019 does not include certain nonvested share awards and nonvested share unit awards that were outstanding and antidilutive, since the grant date fair values of these nonvested share awards and nonvested share unit awards exceeded the average market price of the Company’s common shares. Additionally, the computation of diluted earnings per share for the 13 weeks ended April 1, 2018 excludes all potential nonvested share awards and nonvested share unit awards since the Company reported a net loss, and the effect of their inclusion would have been antidilutive.