3. EARNINGS (LOSS) PER SHARE

Earnings (loss) per share is computed as follows (in thousands, except per share data):

	For the Three Months Ended June 30,														For the Six Months Ended June 30,
	2018						2017								2018								2017
	Net Income		Shares		Per Share Amount		Net Loss			Shares		Per Share Amount			Net Loss			Shares		Per Share Amount			Net Loss			Shares		Per Share Amount
	(In thousands, except per share amounts)
Basic earnings (loss) per share	$	22,697		86,399	$	0.26	$	(175,850	)		85,745	$	(2.05	)	$	(40,147	)		86,305	$	(0.47	)	$	(236,979	)		85,560	$	(2.77	)
Effect of dilutive incentive-based awards				486							—								—								—
Diluted earnings (loss) per share	$	22,697		86,885	$	0.26	$	(175,850	)		85,745	$	(2.05	)	$	(40,147	)		86,305	$	(0.47	)	$	(236,979	)		85,560	$	(2.77	)

In accordance with the Earnings Per Share Topic of the ASC, basic earnings (loss) per share is computed by dividing net income (loss) by the weighted average number of shares of common stock outstanding during the period (excluding treasury stock and unvested restricted stock). Shares of unvested restricted stock are eligible to receive dividends, if any; however, dividend rights will be forfeited if the award does not vest. Accordingly, only vested shares of formerly restricted stock are included in the calculation of basic earnings per share. The weighted average number of repurchased shares during the period, if any, which are held as treasury stock, are excluded from shares of common stock outstanding.

Diluted earnings (loss) per share is determined using the treasury stock method based on the dilutive effect of unvested restricted shares, restricted stock units and certain shares of common stock that are issuable upon exercise of stock options. During the three months ended June 30, 2018, there were approximately 2,023,000 anti-dilutive shares of common stock excluded from the computation of diluted earnings per share. There were approximately 3,882,000 and 5,178,000 potentially dilutive shares excluded from the computation of diluted loss per share during the six months ended June 30, 2018 and 2017, respectively, and approximately 5,435,000 potentially dilutive shares excluded from the computation of diluted loss per share during the three months ended June 30, 2017, as their effect would have been anti-dilutive due to the Company’s net loss in those periods. The Company’s outstanding performance-vesting restricted awards of approximately 1,950,000 and 2,570,000 as of June 30, 2018 and 2017, respectively, are considered contingently issuable shares and are excluded from the calculation of diluted earnings (loss) per share until the performance measure criteria is met as of the end of the reporting period.