The following data shows the amounts used in computing loss per share and the effect on earnings and the weighted average number of shares of dilutive potential common shares.

	Year Ended March 31,
(In thousands, except per share data)	2021			2020			2019
Numerator:
Net loss	$	(21,001	)	$	(34,067	)	$	(13,164	)
Series A convertible preferred stock issuance costs		(1,031	)		—			—
Series A convertible preferred stock dividends		(1,576	)		—			—
Net loss attributable to common shareholders	$	(23,608	)	$	(34,067	)	$	(13,164	)

Denominator:
Weighted average shares outstanding - basic and diluted		23,458			23,233			23,037

Loss per share - basic and diluted:	$	(1.01	)	$	(1.47	)	$	(0.57	)

Anti-dilutive stock options, SSARs, restricted shares, performance shares and preferred shares		4,228			1,510			1,433

Basic earnings (loss) per share is computed as net income available to common shareholders divided by the weighted average basic shares outstanding. The outstanding shares used to calculate the weighted average basic shares excludes 132,198, 208,581 and 300,437 of restricted shares and performance shares at March 31, 2021, 2020 and 2019, respectively, as these shares were issued but were not vested and, therefore, not considered outstanding for purposes of computing basic earnings per share at the balance sheet dates.

Diluted earnings (loss) per share includes the effect of all potentially dilutive securities on earnings per share. We have stock-settled appreciation rights ("SSARs") and unvested restricted shares that are potentially dilutive securities. When a loss is reported, the denominator of diluted earnings per share cannot be adjusted for the dilutive impact of share-based compensation awards because doing so would be anti-dilutive. In addition, when a net loss is reported, adjusting the denominator of diluted earnings per share would also be anti-dilutive to the loss per share, even if the entity has net income after adjusting for a discontinued operation. Therefore, for all periods presented, basic weighted-average shares outstanding were used in calculating the diluted net loss per share.