XML 49 R34.htm IDEA: XBRL DOCUMENT v3.8.0.1
Note 3 - Investment Securities (Tables)
 12 Months Ended
Dec. 31, 2017
Notes Tables  
Unrealized Gain (Loss) on Investments [Table Text Block]
           
Gross
    
Gross
          
   
Amortized
    
Unrealized
    
Unrealized
    
Fair
  
   
Cost
    
Gains
    
(Losses)
    
Value
  
December 31, 2017:
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Securities held to maturity:
                                
Municipal securities
   $
378,424,205
     $
2,763,718
     $
(2,488,119
 )   $
378,699,804
  
Other securities
    
1,050,000
      
-
      
-
      
1,050,000
  
    $
379,474,205
     $
2,763,718
     $
(2,488,119
 )   $
379,749,804
  
                                 
Securities available for sale:
                                
U.S. govt. sponsored agency securities
   $
38,409,157
     $
37,344
     $
(349,967
 )   $
38,096,534
  
Residential mortgage-backed and related securities
    
165,459,470
      
155,363
      
(2,313,529
 )    
163,301,304
  
Municipal securities
    
66,176,364
      
660,232
      
(211,100
 )    
66,625,496
  
Other securities
    
4,014,004
      
896,384
      
(25,815
 )    
4,884,573
  
    $
274,058,995
     $
1,749,323
     $
(2,900,411
 )   $
272,907,907
  
                                 
December 31, 2016:
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Securities held to maturity:
                                
Municipal securities
   $
321,859,056
     $
2,200,577
     $
(4,694,734
 )   $
319,364,899
  
Other securities
    
1,050,000
      
-
      
-
      
1,050,000
  
    $
322,909,056
     $
2,200,577
     $
(4,694,734
 )   $
320,414,899
  
                                 
Securities available for sale:
                                
U.S. govt. sponsored agency securities
   $
46,281,306
     $
132,886
     $
(330,585
 )   $
46,083,607
  
Residential mortgage-backed and related securities
    
150,465,222
      
174,993
      
(2,938,088
 )    
147,702,127
  
Municipal securities
    
52,816,541
      
425,801
      
(637,916
 )    
52,604,426
  
Other securities
    
4,046,332
      
703,978
      
(27,331
 )    
4,722,979
  
    $
253,609,401
     $
1,437,658
     $
(3,933,920
 )   $
251,113,139
  
Schedule of Unrealized Loss on Investments [Table Text Block]
   
Less than 12 Months
    
12 Months or More
    
Total
  
           
Gross
            
Gross
            
Gross
  
   
Fair
    
Unrealized
    
Fair
    
Unrealized
    
Fair
    
Unrealized
  
   
Value
    
Losses
    
Value
    
Losses
    
Value
    
Losses
  
December 31, 2017:
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Securities held to maturity:
                                                
Municipal securities
   $
23,750,826
     $
(354,460
 )   $
72,611,780
     $
(2,133,659
 )   $
96,362,606
     $
(2,488,119
 )
                                                 
Securities available for sale:
                                                
U.S. govt. sponsored agency securities
   $
28,576,258
     $
(200,022
 )   $
3,640,477
     $
(149,945
 )   $
32,216,735
     $
(349,967
 )
Residential mortgage-backed and related securities
    
88,927,779
      
(871,855
 )    
57,931,731
      
(1,441,674
 )    
146,859,510
      
(2,313,529
 )
Municipal securities
    
10,229,337
      
(41,151
 )    
9,997,433
      
(169,949
 )    
20,226,770
      
(211,100
 )
Other securities
    
923,535
      
(25,815
 )    
-
      
-
      
923,535
      
(25,815
 )
    $
128,656,909
     $
(1,138,843
 )   $
71,569,641
     $
(1,761,568
 )   $
200,226,550
     $
(2,900,411
 )
                                                 
December 31, 2016:
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Securities held to maturity:
                                                
Municipal securities
   $
122,271,533
     $
(4,076,647
 )   $
13,010,803
     $
(618,087
 )   $
135,282,336
     $
(4,694,734
 )
                                                 
Securities available for sale:
                                                
U.S. govt. sponsored agency securities
   $
21,788,139
     $
(257,640
 )   $
5,499,012
     $
(72,945
 )   $
27,287,151
     $
(330,585
 )
Residential mortgage-backed and related securities
    
121,506,582
      
(2,641,664
 )    
7,437,615
      
(296,424
 )    
128,944,197
      
(2,938,088
 )
Municipal securities
    
34,152,822
      
(618,462
 )    
338,099
      
(19,454
 )    
34,490,921
      
(637,916
 )
Other securities
    
3,177,414
      
(27,331
 )    
-
      
-
      
3,177,414
      
(27,331
 )
    $
180,624,957
     $
(3,545,097
 )   $
13,274,726
     $
(388,823
 )   $
193,899,683
     $
(3,933,920
 )
Realized Gain (Loss) on Investments [Table Text Block]
   
2017
    
2016
    
2015
  
                         
Proceeds from sales of securities
   $
71,091,580
     $
134,188,737
     $
81,410,368
  
Gross gains from sales of securities
    
67,351
      
4,845,009
      
1,045,444
  
Gross losses from sales of securities
    
(155,236
 )    
(252,611
 )    
(246,461
 )
Investments Classified by Contractual Maturity Date [Table Text Block]
   
Amortized Cost
    
Fair Value
  
Securities held to maturity:
                
Due in one year or less
   $
2,912,158
     $
2,909,816
  
Due after one year through five years
    
20,838,734
      
20,896,388
  
Due after five years
    
355,723,313
      
355,943,600
  
    $
379,474,205
     $
379,749,804
  
Securities available for sale:
                
Due in one year or less
   $
1,991,755
     $
1,996,584
  
Due after one year through five years
    
26,984,843
      
26,986,584
  
Due after five years
    
75,608,923
      
75,738,862
  
    $
104,585,521
     $
104,722,030
  
Residential mortgage-backed and related securities
    
165,459,470
      
163,301,304
  
Other securities
    
4,014,004
      
4,884,573
  
    $
274,058,995
     $
272,907,907
  
   
Amortized Cost
    
Fair Value
  
Securities held to maturity:
                
Municipal securities
   $
208,103,672
     $
208,961,233
  
                 
Securities available for sale:
                
U.S. govt. sponsored agency securities
    
5,048,756
      
4,988,073
  
Municipal securities
    
57,554,280
      
57,817,498
  
    $
62,603,036
     $
62,805,571
  
Schedule of Investment in Bond Securities [Table Text Block]
December 31, 2017:
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
U.S. State:
  
Number of
Issuers
    
Amortized Cost
    
Fair Value
    
Average
Exposure Per
Issuer (Fair Value)
  
                                 
Illinois
    
20
     $
19,328,700
     $
19,514,024
     $
975,701
  
Iowa
    
16
      
13,881,689
      
13,969,512
      
873,095
  
Missouri
    
17
      
9,243,355
      
9,308,287
      
547,546
  
North Dakota
    
7
      
21,626,574
      
21,724,197
      
3,103,457
  
Ohio
    
9
      
8,002,705
      
7,938,028
      
882,003
  
Texas
    
17
      
11,253,775
      
11,308,848
      
665,226
  
Other
    
45
      
24,000,278
      
24,215,119
      
538,114
  
Total general obligation bonds
    
131
     $
107,337,076
     $
107,978,015
     $
824,260
  
December 31, 2016:
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
U.S. State:
  
Number of
Issuers
    
Amortized Cost
    
Fair Value
    
Average
Exposure Per
Issuer (Fair Value)
  
                                 
Illinois
    
19
     $
29,214,559
     $
29,308,438
     $
1,542,549
  
Iowa
    
27
      
32,258,612
      
32,231,936
      
1,193,775
  
Missouri
    
14
      
8,291,192
      
8,323,245
      
594,518
  
North Dakota
    
7
      
22,169,050
      
21,499,075
      
3,071,296
  
Ohio
    
8
      
6,790,398
      
6,651,897
      
831,487
  
Other
    
41
      
18,481,496
      
18,458,044
      
450,196
  
Total general obligation bonds
    
116
     $
117,205,307
     $
116,472,635
     $
1,004,074
  
December 31, 2017:
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
U.S. State:
  
Number of
Issuers
    
Amortized Cost
    
Fair Value
    
Average
Exposure Per
Issuer (Fair Value)
  
                                 
Illinois
    
2
     $
17,211,441
     $
17,408,544
     $
8,704,272
  
Indiana
    
26
      
51,171,818
      
50,861,336
      
1,956,205
  
Iowa
    
29
      
68,724,899
      
69,079,470
      
2,382,051
  
Kansas
    
6
      
12,873,329
      
12,877,087
      
2,146,181
  
Missouri
    
56
      
106,259,015
      
106,232,837
      
1,897,015
  
North Dakota
    
5
      
11,451,560
      
11,351,676
      
2,270,335
  
Ohio
    
10
      
55,766,091
      
55,820,203
      
5,582,020
  
Other
    
11
      
13,805,340
      
13,716,132
      
1,246,921
  
Total revenue bonds
    
145
     $
337,263,493
     $
337,347,285
     $
2,326,533
  
December 31, 2016:
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
U.S. State:
  
Number of
Issuers
    
Amortized Cost
    
Fair Value
    
Average
Exposure Per
Issuer (Fair Value)
  
                                 
Indiana
    
22
     $
47,994,737
     $
47,582,138
     $
2,162,824
  
Iowa
    
31
      
70,788,393
      
71,142,393
      
2,294,916
  
Kansas
    
6
      
13,476,366
      
13,427,491
      
2,237,915
  
Missouri
    
47
      
90,784,441
      
89,664,013
      
1,907,745
  
North Dakota
    
4
      
8,089,067
      
7,796,381
      
1,949,095
  
Ohio
    
3
      
13,650,000
      
13,405,222
      
4,468,407
  
Other
    
7
      
12,687,286
      
12,479,052
      
1,782,722
  
Total revenue bonds
    
120
     $
257,470,290
     $
255,496,690
     $
2,129,139