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6. Earnings Per Share

9 Months Ended

Sep. 30, 2018

(6) Earnings Per Share

Earnings per share for the three-month and nine-month periods ended September 30, 2018 and 2017 were calculated using the weighted average number of shares outstanding for the related period. The following table reconciles the number of shares used in the computations of basic and diluted earnings per share for the three-month and nine-month periods ended September 30, 2018 and 2017:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
	(In thousands)				(In thousands)
Weighted average number of common shares outstanding during the period used to compute basic earnings per share		22,636		22,473		21,800		23,019

Incremental common shares attributable to exercise of outstanding options and warrants		2,099		4,306		3,378		4,587

Weighted average number of common shares used to compute diluted earnings per share		24,735		26,779		25,178		27,606

If the anti-dilutive effects of common stock equivalents were considered, shares included in the diluted earnings per share calculation for the three-month and nine-month periods ended September 30, 2018 would have included an additional 11.0 million and 10.1 million shares, respectively, attributable to the exercise of outstanding options and warrants. For the three-month and nine-month periods ended September 30, 2017, an additional 9.7 million and 7.3 million shares, respectively, would be included in the diluted earnings per share calculation.