Quarterly report pursuant to Section 13 or 15(d)

New Accounting Standards Implemented (Details Textual)

v3.10.0.1
New Accounting Standards Implemented (Details Textual) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Jan. 02, 2018
Sep. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Jun. 30, 2018
Revenues   $ 1,709,000     $ 219,000 $ 5,126,000 $ 622,000    
Cumulative Effect on Retained Earnings, Net of Tax     $ 3,663,000            
Restricted Cash and Cash Equivalents   560,000   $ 0 0 560,000 0 $ 0  
Grants Receivable   13,850,000       13,850,000      
Deferred Revenue, Current $ 2,612,000 0 1,600,000 3,214,000   0   3,214,000 $ 800,000
Proceeds From Grant Received   5,000,000   $ 2,600,000       $ 2.4  
Retained Earnings [Member]                  
Cumulative Effect on Retained Earnings, Net of Tax 3,663,000   $ 3,663,000            
Royalty [Member]                  
Revenues   22,000     68,000 89,000 170,000    
Grant [Member]                  
Revenues   $ 1,687,000     $ 0 $ 5,037,000 $ 0    
Accounting Standards Update 2014-09 [Member]                  
Stockholders' Equity, Period Increase (Decrease) $ 3,700,000