Annual report pursuant to Section 13 and 15(d)

Note 2 - Acquisition Activity (Details Textual)

v3.21.1
Note 2 - Acquisition Activity (Details Textual) - AJS Bancorp, Inc [Member]
$ / shares in Units, $ in Thousands
Jan. 24, 2019
USD ($)
$ / shares
shares
Jan. 23, 2019
USD ($)
Business Acquisition, Number of Shares Given Per Share of Acquired Company, Stockholders Holding 100 Shares or More (in shares) 0.2030  
Business Acquisition, Cash Paid Per Share of Acquired Company, Stockholders Holding 100 or More Shares (in dollars per share) | $ / shares $ 7.20  
Business Acquisition, Cash Paid Per Share of Acquired Company, Holding Less Than 100 Shares (in dollars per share) | $ / shares $ 16.00  
Business Acquisition, Number of Shares Given Per Share of Acquired Company, Less Than 100 Shares (in shares) 0  
Business Acquisition, Fractional Shares Multiplier (in dollars per share) | $ / shares $ 43.01  
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) 416,478  
Payments to Acquire Businesses, Net of Cash Acquired, Total | $   $ 15,700
Business Combination, Consideration Transferred, Total | $ $ 33,235 33,200
Business Acquisition, Transaction Costs | $   $ 2,100
Number of Banking Centers   22
Maximum [Member]    
Business Acquisition, Number of Held Shares of Acquired Company (in shares) 100