Quarterly report pursuant to Section 13 or 15(d)

Note 10 - Share-based Compensation (Details Textual)

v3.19.3.a.u2
Note 10 - Share-based Compensation (Details Textual) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Jun. 30, 2019
Sep. 30, 2019
Share-based Payment Arrangement, Expense $ 100 $ 800    
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total $ 800      
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition 2 years      
Share-based Payment Arrangement, Amount Capitalized $ 0 $ 0    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Contractual Term 10 years      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 49,188      
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number, Ending Balance       0
Independent Directors [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 3 years      
Employees [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross     0  
Stock Option Plan 1992 [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 1,461,475