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Net Income (Loss) Per Share (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Schedule of Net Income (Loss) Per Share

Net income (loss) per share was calculated as follows:

	Year Ended December 31,
(in thousands, except per share data)	2019				2018				2017
Net income (loss) - basic and diluted	$	37,012			$	21,111			$	(142,542	)
Weighted average common shares outstanding, basic		91,627				90,235				88,089
Effect of dilutive securities:
Employee stock purchase program		25				11				—
Stock options		2,559				3,228				—
Restricted stock units		449				564				—
2024 Notes		1,072				1,348				—
Weighted average common shares outstanding, diluted		95,732				95,386				88,089
Net income (loss) per share, basic	$	0.40			$	0.23			$	(1.62	)
Net income (loss) per share, diluted	$	0.39			$	0.22			$	(1.62	)

Schedule of Anti-Dilutive Shares Excluded from Diluted Per Share Amounts

Shares which have been excluded from diluted per share amounts because their effect would have been anti-dilutive include the following:

	Year Ended December 31,
(in thousands)	2019				2018				2017
Stock options and restricted stock units		2,144				887				7,436

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- References

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- Definition

Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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