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Note 3 - Available-for-sale Securities (Tables)
3 Months Ended
Mar. 31, 2019
Notes Tables  
Debt Securities, Available-for-sale [Table Text Block]
(In thousands)
 
Amortized
Cost
   
Gross
Unrealized
Gains
   
Gross
Unrealized
(Losses)
   
Fair
Value
 
March 31, 2019:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U. S. Government agency mortgage-backed securities
  $
20,017
     
84
     
(125
)    
19,976
 
Corporate bonds
   
14,000
     
-
     
(1,172
)    
12,828
 
Subordinated notes
   
5,899
     
81
     
-
     
5,980
 
U.S. Treasury notes
   
1,488
     
3
     
-
     
1,491
 
    $
41,404
     
168
     
(1,297
)    
40,275
 
                                 
December 31, 2018:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U. S. Government agency mortgage-backed securities
  $
20,626
     
43
     
(196
)    
20,473
 
Corporate bonds
   
14,000
     
-
     
(1,026
)    
12,974
 
Subordinated notes
   
4,500
     
64
     
-
     
4,564
 
U.S. Treasury notes
   
1,484
     
1
     
-
     
1,485
 
    $
40,610
     
108
     
(1,222
)    
39,496
 
Schedule of Unrealized Loss on Investments [Table Text Block]
(In thousands)
 
Less than 12 Months
   
12 Months or More
   
Total
 
   
Fair
Value
   
Unrealized
(Loss)
   
Fair
Value
   
Unrealized
(Loss)
   
Fair
Value
   
Unrealized
(Loss)
 
March 31, 2019:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U. S. Government agency mortgage-backed securities
  $
2,972
     
(23
)    
3,778
     
(102
)    
6,750
     
(125
)
Corporate bonds
   
-
     
-
     
12,828
     
(1,172
)    
12,828
     
(1,172
)
    $
2,972
     
(23
)    
16,606
     
(1,274
)    
19,578
     
(1,297
)
                                                 
December 31, 2018:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U. S. Government agency mortgage-backed securities
  $
8,024
     
(38
)    
5,422
     
(158
)    
13,446
     
(196
)
Corporate bonds
   
-
     
-
     
12,974
     
(1,026
)    
12,974
     
(1,026
)
    $
8,024
     
(38
)    
18,396
     
(1,184
)    
26,420
     
(1,222
)
Investments Classified by Contractual Maturity Date [Table Text Block]
(In thousands)
 
Amortized Cost
   
Fair Value
 
   
Due
Within
5 years
   
Due After
5 years
through
10 years
   
Due
After
10 years
   
Total
   
Due
Within
5 years
   
Due After
5 years
through
10 years
   
Due
After
10 years
   
Total
 
March 31, 2019:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Corporate bonds
  $
-
     
9,000
     
5,000
     
14,000
     
-
     
8,278
     
4,550
     
12,828
 
Subordinated notes
   
-
     
5,899
     
-
     
5,899
     
-
     
5,980
     
-
     
5,980
 
U.S. Treasury notes
   
1,488
     
-
     
-
     
1,488
     
1,491
     
-
     
-
     
1,491
 
Available-for-sale securities with single maturity dates
   
1,488
     
14,899
     
5,000
     
21,387
     
1,491
     
14,258
     
4,550
     
20,299
 
U. S. Government agency mortgage-backed securities
   
9,671
     
2,445
     
7,901
     
20,017
     
9,664
     
2,368
     
7,944
     
19,976
 
    $
11,159
     
17,344
     
12,901
     
41,404
     
11,155
     
16,626
     
12,494
     
40,275
 
                                                                 
December 31, 2018:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Corporate bonds
  $
-
     
9,000
     
5,000
     
14,000
     
-
     
8,537
     
4,437
     
12,974
 
Subordinated notes
   
-
     
4,500
     
-
     
4,500
     
-
     
4,564
     
-
     
4,564
 
U.S. Treasury notes
   
1,484
     
-
     
-
     
1,484
     
1,485
     
-
     
-
     
1,485
 
Available-for-sale securities with single maturity dates
   
1,484
     
13,500
     
5,000
     
19,984
     
1,485
     
13,101
     
4,437
     
19,023
 
U. S. Government agency mortgage-backed securities
   
6,842
     
5,668
     
8,116
     
20,626
     
6,844
     
5,530
     
8,099
     
20,473
 
    $
8,326
     
19,168
     
13,116
     
40,610
     
8,329
     
18,631
     
12,536
     
39,496