STOCK-BASED COMPENSATION, Equity Instruments Other Than Options (Details) (USD $)	9 Months Ended					237 Months Ended	9 Months Ended	237 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Restricted Stock and Units [Member]	Sep. 30, 2013 Restricted Stock and Units [Member]	Sep. 30, 2014 Restricted Stock and Units [Member] Minimum [Member]	Sep. 30, 2014 Restricted Stock and Units [Member] Minimum [Member]	Sep. 30, 2014 Restricted Stock and Units [Member] Maximum [Member]	Sep. 30, 2014 Restricted Stock and Units [Member] Maximum [Member]	Sep. 30, 2014 Restricted Stock and Units [Member] Selling, General and Adminstrative Expense [Member]	Sep. 30, 2013 Restricted Stock and Units [Member] Selling, General and Adminstrative Expense [Member]	Sep. 30, 2014 Restricted Stock and Units [Member] Selling, General and Adminstrative Expense [Member]	Sep. 30, 2013 Restricted Stock and Units [Member] Selling, General and Adminstrative Expense [Member]	Sep. 30, 2014 Restricted Stock and Units [Member] Research and Development Expense [Member]	Sep. 30, 2013 Restricted Stock and Units [Member] Research and Development Expense [Member]	Sep. 30, 2014 Restricted Stock and Units [Member] Research and Development Expense [Member]	Sep. 30, 2013 Restricted Stock and Units [Member] Research and Development Expense [Member]	Sep. 30, 2014 Performance Shares [Member]	Sep. 30, 2014 Performance Shares [Member] Selling, General and Adminstrative Expense [Member]	Sep. 30, 2013 Performance Shares [Member] Selling, General and Adminstrative Expense [Member]	Sep. 30, 2014 Performance Shares [Member] Selling, General and Adminstrative Expense [Member]	Sep. 30, 2013 Performance Shares [Member] Selling, General and Adminstrative Expense [Member]	Sep. 30, 2014 Performance Shares [Member] Research and Development Expense [Member]	Sep. 30, 2013 Performance Shares [Member] Research and Development Expense [Member]	Sep. 30, 2014 Performance Shares [Member] Research and Development Expense [Member]	Sep. 30, 2013 Performance Shares [Member] Research and Development Expense [Member]	Sep. 30, 2014 Non Employee Members of Scientific Advisory Board [Member] Restricted Stock and Units [Member] Research and Development Expense [Member]	Sep. 30, 2013 Non Employee Members of Scientific Advisory Board [Member] Restricted Stock and Units [Member] Research and Development Expense [Member]	Sep. 30, 2014 Non Employee Members of Scientific Advisory Board [Member] Restricted Stock and Units [Member] Research and Development Expense [Member]	Sep. 30, 2013 Non Employee Members of Scientific Advisory Board [Member] Restricted Stock and Units [Member] Research and Development Expense [Member]	Sep. 30, 2014 Performance-Based Vesting Requirement [Member] Performance Shares [Member]	Sep. 30, 2014 Market-Based Vesting Requirement [Member] Performance Shares [Member]
Equity instruments other than options [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			67,177														36,092													18,044	18,048
Stock-based compensation, aggregate disclosures [Abstract]
Compensation expense									$ 949,000	$ 959,000	$ 2,800,000	$ 2,900,000	$ 421,000	$ 409,000	$ 1,204,000	$ 1,200,000		$ 284,000	$ 139,000	$ 969,000	$ 314,000	$ 152,000	$ 42,000	$ 363,000	$ 95,000	$ 62,000	$ 78,000	$ 162,000	$ 207,000
Restricted stock awards and units vesting terms					2 years	1 year	3 years	6 years
Shares withheld for tax withholding obligations (in shares)			75,594	94,209
Fair value of shares withheld for tax withholding obligations	2,600,000	3,000,000
Total fair value of performance unit awards granted			$ 2,300,000														$ 1,400,000