(Loss) Earnings Per Share

Basic net (loss) income per common share is based upon the weighted average number of common shares outstanding during the period. Diluted net (loss) income per common share is based upon the weighted average number of common shares outstanding, including the dilutive effect, if any, of potentially dilutive securities using the treasury stock method.

The Company’s potentially dilutive shares consist of: (i) vested and unvested stock options that are in-the-money, and (ii) unvested RSUs.

A reconciliation of the (loss) earnings per share data from a basic to a fully diluted basis is detailed below (amounts in thousands, except per share data):



	Three Months Ended June 30,					Six Months Ended June 30,
	2018			2017		2018			2017
Net (loss) income	$	(87,984	)	$	2,537	$	(116,731	)	$	43,564
Net (loss) income per share:
Basic	$	(0.70	)	$	0.02	$	(0.93	)	$	0.35
Diluted	$	(0.70	)	$	0.02	$	(0.93	)	$	0.35
Shares used in computing net (loss) income per share:
Weighted average basic shares outstanding	125,332			124,660		125,286			124,541
Dilutive securities:
Stock option and unvested RSUs	—			534		—			314
Total dilutive securities	—			534		—			314
Weighted average diluted shares outstanding	125,332			125,194		125,286			124,855

Shares subject to stock options omitted from the calculation of (loss) income per share as their effect would have been anti-dilutive	3,842			2,268		3,815			3,991