(5) Earnings Per Share

Basic earnings per share (“Basic EPS”) has been computed using the weighted-average number of common shares outstanding during each period. Diluted earnings per share ("Diluted EPS") assumes, as of the beginning of the period, exercise of stock options and restricted stock grants using the treasury stock method. Diluted EPS also assumes conversion of performance-based restricted stock units to common shares based on the number of shares (if any) that would be issuable, according to predetermined performance and market goals, if the end of the reporting period was the end of the performance period. Certain of our stock options and restricted stock grants that would potentially dilute Basic EPS in the future were also antidilutive for the three months ended June 30, 2019 and 2018 and the six months ended June 30, 2019 and 2018 are discussed below.

The following is a reconciliation of the numerators and denominators used in the calculation of Basic EPS and Diluted EPS for the periods indicated below (in thousands, except per share amounts):



	Three Months Ended June 30, 2019					Three Months Ended June 30, 2018
	Net Income (Loss)		Shares	Per Share Amount		Net Income (Loss)		Shares	Per Share Amount
Basic EPS:
Net Income (Loss) and Share Amounts	$	64,704	11,746	$	5.51	$	2,319	11,655	$	0.20
Dilutive Securities:
Restricted Stock Awards			—					—
Restricted Stock Unit Awards			34					16
Stock Option Awards			—					86
Diluted EPS:
Net Income (Loss) and Assumed Share Conversions	$	64,704	11,780	$	5.49	$	2,319	11,757	$	0.20



	Six Months Ended June 30, 2019					Six Months Ended June 30, 2018
	Net Income (Loss)		Shares	Per Share Amount		Net Income (Loss)		Shares	Per Share Amount
Basic EPS:
Net Income (Loss) and Share Amounts	$	80,757	11,727	$	6.89	$	10,787	11,629	$	0.93
Dilutive Securities:
Restricted Stock Awards			—					—
Restricted Stock Unit Awards			59					17
Stock Option Awards			—					96
Diluted EPS:
Net Income (Loss) and Assumed Share Conversions	$	80,757	11,786	$	6.85	$	10,787	11,742	$	0.92

Approximately 0.5 million and 0.4 million stock options to purchase shares were not included in the computation of Diluted EPS for the three months ended June 30, 2019 and 2018, respectively, and 0.6 million and 0.4 million for the six months ended June 30, 2019 and 2018, respectively, because these stock options were antidilutive.

Approximately 0.2 million and less than 0.1 million shares of restricted stock units that could be converted to common shares were not included in the computation of Diluted EPS for both the three months ended June 30, 2019 and 2018 because they were antidilutive. There were approximately 0.1 million and less than 0.1 million antidilutive shares of restricted stock units for both the six months ended June 30, 2019 and 2018.

Approximately 0.1 million and less than 0.1 million shares of performance-based restricted stock units were not included in the computation of Diluted EPS for the three and six months ended June 30, 2019, respectively, and less than 0.1 million shares of performance-based restricted stock units were not included for both the three and six months ended June 30, 2018 because they were antidilutive.

Approximately 2.1 million warrants to purchase common stock were not included in the computation of Diluted EPS for both the three and six months ended June 30, 2019 and 4.3 million warrants for both the three and six months ended June 30, 2018 because these warrants were antidilutive.