XML 47 R32.htm IDEA: XBRL DOCUMENT v3.10.0.1

Stock Incentive Plans and Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock Option Activity

The following table summarizes all stock option activity for the year ended December 31, 2018

In thousands (except per share amounts and years)	Number of Shares				Weighted Average Exercise Price				Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value
Outstanding as of January 1, 2018		24,108			$	3.26
Granted		4,363				7.82
Forfeited		(1,058	)			3.39
Expired		(12	)			3.40
Exercised		(8,138	)			3.24
Outstanding as of December 31, 2018		19,263				4.29			6.5 years		$	188,022
Exercisable as of December 31, 2018		12,415				3.53			5.4 years			125,395
Vested and expected to vest as of December 31, 2018		18,921			$	4.27			6.5 years		$	184,900
Available for future grant as of December 31, 2018		11,463

Assumptions Used to Estimate Fair Value of Share-Based Payment Awards

For 2018, 2017 and 2016, the Company used the following assumptions to estimate the fair value of share-based payment awards:

	2018			2017			2016
Risk-free interest rate	2.18% - 3.00%			1.77% - 2.01%			1.07% - 1.70%
Expected dividend yield	0.00%			0.00%			0.00%
Expected option life (years)	6.25			6.25			6.25
Expected volatility	71% - 92%			73% - 82%			83% - 86%

Restricted Stock Unit Activity

The following table presents the restricted stock unit activity for the years ended December 31, 2018 and 2017:

In thousands (except per share amounts)	Shares				Weighted Average Grant Date Fair Value
Outstanding as of January 1, 2017		10,143			$	2.09
Granted		4,197				3.04
Vested		(2,179	)			1.62
Forfeited		(155	)			2.91
Outstanding as of December 31, 2017		12,006				2.50
Granted		2,633				4.32
Vested		(4,611	)			2.20
Forfeited		(395	)			3.43
Outstanding as of December 31, 2018		9,633			$	3.12

Stock-Based Compensation Expense Related to Option Awards

The following table presents the stock-based compensation expense related to stock-based awards for the years ended December 31, 2018, 2017 and 2016:

In thousands	2018				2017				2016
Research and development	$	2,898			$	2,122			$	2,252
Selling, general and administrative		15,908				11,838				11,361
Stock-based compensation expense	$	18,806			$	13,960			$	13,613

X

- References

No definition available.

+ Details

Name:	us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901

+ Details

Name:	us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year.

+ References

No definition available.

+ Details

Name:	us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration