Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Employee and Director Benefits (Details Textual)

v3.19.3
Note 7 - Employee and Director Benefits (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Share-based Payment Arrangement, Noncash Expense, Total $ 294,000 $ 202,000 $ 781,000 $ 684,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value     $ 12.60 $ 10.98
Share-based Payment Arrangement, Option [Member]        
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total 1,198,000   $ 1,198,000  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition     1 year 3 months 18 days  
Restricted Stock [Member]        
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total $ 1,491,000   $ 1,491,000  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition     2 years 8 months 12 days  
The 2009 Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 5,550,000   5,550,000  
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period     10 years