Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details Textual)

v3.19.3
Income Taxes (Details Textual) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2019
Dec. 31, 2018
Income Taxes (Textual)    
Change in deferred tax assets valuation allowance $ 1,275,000  
Federal [Member]    
Income Taxes (Textual)    
Net operating loss 8,243,000 $ 8,243,000
Additional federal NOLs 10,443,000 5,743,000
State [Member]    
Income Taxes (Textual)    
Net operating loss $ 24,328,000 $ 21,049,000
Expiring date, description expiring in 2039. expiring in 2039.
Japan [Member]    
Income Taxes (Textual)    
Net operating loss $ 337,000 $ 319,000
Expiring date, description expiring in 2029. expiring in 2029.
Taiwan [Member]    
Income Taxes (Textual)    
Net operating loss $ 2,189,000 $ 879,000
Expiring date, description expiring in 2029. expiring in 2029.
Federal Research and Development Tax Credit [Member]    
Income Taxes (Textual)    
Research and development tax credit $ 37,000 $ 37,000
Expiring date, description The credit begins to expire in 2034 if not utilized.  
California State Research and Development Tax Credit [Member]    
Income Taxes (Textual)    
Research and development tax credit $ 39,000 $ 39,000