Earnings per Share

The computations of basic and diluted EPS are set forth below:



	For the Three Months Ended June 30,							For the Six Months Ended June 30,
	2019				2018			2019				2018
	(in thousands, except per share amounts, unaudited)
Numerator for basic and diluted EPS — net income (loss)	$	(12,697	)		$	10,513		$	(28,083	)		$	16,881
Denominator for basic EPS — weighted average number of shares	23,925				26,993			24,231				28,546
Add — dilutive effect of:
Restricted stock units	—			(1)	929		(2)	—			(1)	679		(2)
Denominator for diluted EPS — weighted average number of shares and dilutive securities	23,925				27,922			24,231				29,225
Earnings (loss) per share:
Basic EPS	$	(0.53	)		$	0.39		$	(1.16	)		$	0.59
Diluted EPS	$	(0.53	)		$	0.38		$	(1.16	)		$	0.58

The weighted average number of shares and dilutive potential shares for the three and six months ended June 30, 2019 include 334,048 shares of common stock, which were issued to certain selling unitholders of Cogent in April 2019, due to the achievement of the Earnout for the two year period ended March 31, 2019. Such shares were not included in the weighted average number of shares and dilutive potential shares for the three and six months ended June 30, 2018 because the Earnout had not been achieved during that period. See “Note 4 — Fair Value of Financial Instruments” and “Note 7 — Equity”.

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(1) As a result of the loss in the periods, all unamortized restricted stock units, or 3,526,114 units, were antidilutive in the periods. The incremental shares that could be included in the diluted EPS calculation in future periods will vary based on a variety of factors, including the future share price and the amount of unrecognized compensation cost. The incremental shares included, if any, would be less than the number of unamortized restricted stock units. If not for the loss in the periods, 190,930 and 407,823 restricted stock units would have been included in the denominators of diluted EPS for the three and six months ended June 30, 2019, respectively.

(2) Excludes 563,778 and 619,235 unamortized restricted stock units that were antidilutive under the treasury stock method for the three and six months ended June 30, 2018, respectively, and thus were not included in the above calculation. The incremental shares that could be included in the diluted EPS calculation in future periods will vary based on a variety of factors, including the future share price and the amount of unrecognized compensation cost. The incremental shares included, if any, would be less than the number of unamortized restricted stock units.