12. EARNINGS PER COMMON SHARE

The following represents the calculation of earnings (loss) per share (in thousands, except per share amounts):


	Three Months Ended
	March 31,
	2019		2018
Basic:
Net income (loss)	$	(336,559)	$	(2,598)
Weighted average basic number of common shares outstanding		158,549		153,884
Basic net income (loss) per share of common stock	$	(2.12)	$	(0.02)
Diluted:
Net income (loss)	$	(336,559)	$	(2,598)
Weighted average basic number of common shares outstanding		158,549		153,884
Common stock equivalent shares representing shares issuable upon:
Exercise of stock options		Anti-dilutive		Anti-dilutive
Exercise of warrants		Anti-dilutive		Anti-dilutive
Vesting of restricted shares		Anti-dilutive		Anti-dilutive
Weighted average diluted number of common shares outstanding		158,549		153,884
Diluted net income (loss) per share of common stock	$	(2.12)	$	(0.02)

Common stock equivalents, including stock options, restricted shares and warrants totaling 14.9 million shares for the three months ended March 31, 2019 were not included in the computation of diluted earnings per share of common stock because the effect would have been anti-dilutive due to the net loss.

Common stock equivalents, including stock options, restricted shares and warrants totaling 13.2 million shares for the three months ended March 31, 2018 were not included in the computation of diluted earnings per share of common stock because the effect would have been anti-dilutive due to the net loss.