STOCK-BASED COMPENSATION Deferred Compensation Arrangement (Details) (USD $)	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Deferred Compensation Arrangement with Employees and Non Employees, Share Based Payments [Line Items]
Fair value of shares withheld for tax withholding obligations	$ 2,700,000	$ 2,800,000
Director [Member]
Deferred Compensation Arrangement with Employees and Non Employees, Share Based Payments [Line Items]
Vesting period	1 year
Fair value of shares issued	160,000	138,000
Deferred Compensation Arrangement with Individual, Shares Issued	5,000
Restricted Stock and Units [Member]
Deferred Compensation Arrangement with Employees and Non Employees, Share Based Payments [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	57,527
Shares withheld for tax withholding obligations (in shares)	78,924	88,063
Restricted Stock and Units [Member] \| Selling, General and Adminstrative Expense [Member]
Deferred Compensation Arrangement with Employees and Non Employees, Share Based Payments [Line Items]
Compensation expense	900,000	767,000
Restricted Stock and Units [Member] \| Research and Development Expense [Member]
Deferred Compensation Arrangement with Employees and Non Employees, Share Based Payments [Line Items]
Compensation expense	374,460.62	300,000
Performance Shares [Member]
Deferred Compensation Arrangement with Employees and Non Employees, Share Based Payments [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	36,092
Performance Shares [Member] \| Selling, General and Adminstrative Expense [Member]
Deferred Compensation Arrangement with Employees and Non Employees, Share Based Payments [Line Items]
Compensation expense	461,000	38,000
Performance Shares [Member] \| Research and Development Expense [Member]
Deferred Compensation Arrangement with Employees and Non Employees, Share Based Payments [Line Items]
Compensation expense	$ 173,000	$ 11,000

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Deferred Compensation Arrangement with Individual, Vesting Period

+ References

No definition available.

+ Details

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- Definition

The amount of adjustment to stockholders' equity associated with an employee's income tax withholding obligation as part of a net-share settlement of a share-based award.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-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=27013229&loc=d3e301413-122809

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(1)(i)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The total fair value of shares issued during the period under a deferred compensation arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Number of shares issued pursuant to the terms of a deferred compensation arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (l)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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Balance Type:	na
Period Type:	duration

- 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).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer.

+ References

No definition available.

+ Details

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration