Quarterly report pursuant to Section 13 or 15(d)

Financial instruments (Details)

v3.19.2
Financial instruments (Details)
6 Months Ended
Jun. 30, 2019
USD ($)
item
Jun. 30, 2019
$ / shares
Jun. 30, 2019
USD ($)
Dec. 31, 2018
USD ($)
Financial Instruments        
Cash, insured amount     $ 800,000  
Current financial liabilities     7,742,000 $ 7,482,000
Sales agreement maximum sales proceeds of stock issuance and sales $ 10,000,000      
Share Price | $ / shares   $ 1.24    
Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Change In Basis Points | item 100      
Credit Concentration Risk        
Financial Instruments        
Cash, uninsured amount     $ 13,200,000  
Minimum        
Financial Instruments        
Financial Liabilities Trade Terms Period 30 days      
Minimum | Credit Availability Concentration Risk        
Financial Instruments        
Debt Instrument, Term 2 years      
Maximum        
Financial Instruments        
Financial Liabilities Trade Terms Period 60 days