Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION (Details)

v3.19.1
STOCK-BASED COMPENSATION (Details) - USD ($)
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]    
Stock-based compensation expense included in operating expense $ 2,103,000 $ 1,900,000
Total stock-based compensation expense 2,103,000 1,900,000
Stock Options [Member]    
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]    
Stock-based compensation expense included in operating expense 2,103,000 1,900,000
Total stock-based compensation expense 2,103,000 1,900,000
Tax benefit 0 0
Stock-based compensation expense, net of tax 2,103,000 1,900,000
Stock Options [Member] | Research and Development Expense [Member]    
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]    
Stock-based compensation expense included in operating expense 1,032,000 1,056,000
Total stock-based compensation expense 1,032,000 1,056,000
Stock Options [Member] | General and Administrative [Member]    
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]    
Stock-based compensation expense included in operating expense 1,071,000 844,000
Total stock-based compensation expense 1,071,000 844,000
Restricted Stock [Member]    
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]    
Stock-based compensation expense included in operating expense 172,000 172,000
Total stock-based compensation expense 172,000 172,000
Tax benefit 0 0
Stock-based compensation expense, net of tax 172,000 172,000
Restricted Stock [Member] | Research and Development Expense [Member]    
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]    
Stock-based compensation expense included in operating expense 0 0
Total stock-based compensation expense 0 0
Restricted Stock [Member] | General and Administrative [Member]    
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]    
Stock-based compensation expense included in operating expense 172,000 172,000
Total stock-based compensation expense $ 172,000 $ 172,000