Quarterly report pursuant to Section 13 or 15(d)

SALE OF COMMON STOCK (Details Textual)

v3.4.0.3
SALE OF COMMON STOCK (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Securities Financing Transaction [Line Items]    
Proceeds from Issuance of Common Stock $ 0 $ 29,054
Common Stock [Member]    
Securities Financing Transaction [Line Items]    
Stock Issued During Period, Shares, New Issues 17,595  
February 2015 Financing [Member]    
Securities Financing Transaction [Line Items]    
Stock Issued During Period, Shares, New Issues 4,900,000  
Share Price $ 5.85  
Underwriters Over Allotment Number of Shares 735,000  
Common Stock Issuance, Discount Amount $ 1,700  
Common Stock Issuance, Discount Price Per Share $ 0.35  
Payments of Stock Issuance Costs $ 300  
Proceeds from Issuance of Common Stock $ 26,700  
Underwriters Exercised Overallotment Option To Purchase Additional Warrants 418,700  
February 2015 Financing [Member] | Common Stock [Member]    
Securities Financing Transaction [Line Items]    
Common Stock Issuance, Discount Price Per Share $ 0.35  
Payments of Stock Issuance Costs $ 100  
Proceeds from Issuance of Common Stock $ 2,300