Current report of foreign issuer pursuant to Rules 13a-16 and 15d-16 Amendments

Note 7 - Other Equity (Details Textual)

v3.10.0.1
Note 7 - Other Equity (Details Textual)
$ in Thousands
3 Months Ended 9 Months Ended
Jul. 13, 2018
Mar. 28, 2017
Sep. 30, 2018
USD ($)
shares
Sep. 30, 2017
USD ($)
Sep. 30, 2018
USD ($)
shares
Sep. 30, 2017
USD ($)
Statement Line Items [Line Items]            
Number of share options granted in share-based payment arrangement         2,284,000 780,000
Number of shares reserved for issue under options and contracts for sale of shares | shares     6,127,965   6,127,965  
First set of stock options issued in a share-based payment arrangement [member]            
Statement Line Items [Line Items]            
Share-based payment arrangements, option vesting percentage, year one         50.00%  
Share-based payment arrangements, option vesting percentage, year two         16.67%  
Share-based payment arrangements, option vesting percentage, year three         16.67%  
Share-based payment arrangements, option vesting percentage, year four         16.67%  
Second set of stock options issued in a share-based payment arrangement [member]            
Statement Line Items [Line Items]            
Share-based payment arrangements, option vesting percentage, year one         50.00%  
Share-based payment arrangements, option vesting percentage, year two         25.00%  
Number of share options granted in share-based payment arrangement         166,000  
Share-based payment arrangements, option vesting percentage, year three         25.00%  
Third set of stock options issued in a share-based payment arrangement, vesting immediately [member]            
Statement Line Items [Line Items]            
Number of share options granted in share-based payment arrangement         850,000  
Stock options [member]            
Statement Line Items [Line Items]            
Expense from share-based payment transactions with employees     $ 515 $ 156 $ 3,258 $ 495
Restricted share units [member]            
Statement Line Items [Line Items]            
Expense from share-based payment transactions with employees     $ 437 $ 0 $ 437 $ 171
Number of other equity instruments granted in share-based payment arrangement 150,000 150,000     150,000 150,000
Share-based payment arrangements, other equity instruments, vesting period 90 days 90 days