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NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)
 12 Months Ended
Dec. 31, 2016
USD ($)
Institution
Plan
$ / shares
shares
Dec. 31, 2015
USD ($)
$ / shares
shares
Cash and Cash Equivalents [Abstract]    
Highly liquid investments $ 0 $ 0
Number of financial institutions deposits are primarily maintained | Institution 2  
Receivable [Abstract]    
Allowance for doubtful accounts receivable $ 0 0
Licensed Technology [Abstract]    
Impairment of licensed technology 0 0
Goodwill [Abstract]    
Goodwill 32,466,000 32,466,000
Goodwill impairment 0 0
Other Income [Abstract]    
Miscellaneous income $ 2,014,000 4,026,000
Number of years subject to statute of limitations by major tax jurisdiction 3 years  
Basic and diluted net loss per share [Abstract]    
Net loss allocable to common stockholders $ (21,873,000) $ (14,526,000)
Weighted average shares outstanding (in shares) | shares 34,180,253 27,597,434
Basic and diluted net loss per common share (in dollars per share) | $ / shares $ (0.64) $ (0.53)
Net loss allocable to common stockholders $ (21,873,000) $ (14,526,000)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities not included in computation of diluted net income (loss) per common share (in shares) | shares 8,508,177 6,123,108
Stock-Based Compensation [Abstract]    
Number of stock based compensation plans | Plan 2  
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total stock-based compensation expense $ 4,829,000 $ 4,368,000
Income Taxes [Abstract]    
Uncertain tax positions recognized 0 0
Interest expense related to income taxes recognized 0 0
Pentalty expense related to income taxes recognized $ 0 0
Minimum [Member]    
Property, Plant and Equipment [Line Items]    
Estimated useful lives of property and equipment 3 years  
Maximum [Member]    
Property, Plant and Equipment [Line Items]    
Estimated useful lives of property and equipment 5 years  
Stock Options [Member]    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total stock-based compensation expense $ 4,829,000 4,368,000
Tax benefit 0 0
Stock-based compensation expense, net of tax 4,829,000 4,368,000
Stock Options [Member] | Research and Development [Member]    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total stock-based compensation expense 1,219,000 773,000
Stock Options [Member] | General and Administrative [Member]    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total stock-based compensation expense 3,610,000 3,595,000
Stock Options [Member] | Operating Expense [Member]    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total stock-based compensation expense 4,829,000 4,368,000
Restricted Stock [Member]    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total stock-based compensation expense 3,432,000 4,852,000
Tax benefit 0 0
Stock-based compensation expense, net of tax 3,432,000 4,852,000
Restricted Stock [Member] | Research and Development [Member]    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total stock-based compensation expense 200,000 367,000
Restricted Stock [Member] | General and Administrative [Member]    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total stock-based compensation expense 3,232,000 4,485,000
Restricted Stock [Member] | Operating Expense [Member]    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total stock-based compensation expense $ 3,432,000 $ 4,852,000
Warrants [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities not included in computation of diluted net income (loss) per common share (in shares) | shares 3,736,617 3,799,024
Stock Options [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities not included in computation of diluted net income (loss) per common share (in shares) | shares 4,771,560 2,324,084