Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

+ References

No definition available.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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Equity - Restricted Stock Awards (Details) - USD ($)	3 Months Ended		9 Months Ended
Equity - Restricted Stock Awards (Details) - USD ($)	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Dec. 31, 2015
Share-based Compensation [Abstract]
Share-based compensation expense	$ 4,701,000	$ 4,378,000	$ 13,826,000	$ 12,564,000
Cost of sales
Share-based Compensation [Abstract]
Share-based compensation expense	109,000	85,000	300,000	270,000
Research and development
Share-based Compensation [Abstract]
Share-based compensation expense	159,000	202,000	520,000	591,000
Selling, general and administrative
Share-based Compensation [Abstract]
Share-based compensation expense	$ 4,433,000	$ 4,091,000	$ 13,006,000	$ 11,703,000
Restricted Stock Awards
Number of Shares
Unvested, Beginning Balance (in shares)			2,613,267
Granted (in shares)			2,369,876
Vested (in shares)			(952,910)
Forfeited (in shares)			(137,575)
Unvested, Ending Balance (in shares)	3,892,658		3,892,658
Weighted- Average Grant Date Fair Value
Unvested, Beginning Balance (in dollars per share)	$ 8.54		$ 8.54		$ 8.54	$ 9.14
Granted (in dollars per share)			7.98
Vested (in dollars per share)			8.75
Forfeited (in dollars per share)			8.73
Unvested, Ending Balance (in dollars per share)	$ 8.54		$ 8.54
Total unrecognized stock-based compensation related to time-based, nonvested restricted stock					$ 23,767,731
Expenses expected to be recognized over a weighted-average period (in years)			2 years