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Note 2 - Debt Securities (Tables)
9 Months Ended
Sep. 30, 2018
Notes Tables  
Schedule of Available-for-sale Securities Reconciliation [Table Text Block]
   
September 30, 2018
 
   
Amortized
   
Unrealized
   
Unrealized
   
Fair
 
   
Cost
   
Gains
   
Losses
   
Value
 
(Amounts in thousands)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U.S. Agency securities
  $
1,137
    $
4
    $
-
    $
1,141
 
U.S. Treasury securities
   
29,910
     
-
     
(22
)    
29,888
 
Municipal securities
   
97,857
     
766
     
(1,112
)    
97,511
 
Mortgage-backed Agency securities
   
36,263
     
15
     
(1,225
)    
35,053
 
Total
  $
165,167
    $
785
    $
(2,359
)   $
163,593
 
   
December 31, 2017
 
   
Amortized
   
Unrealized
   
Unrealized
   
Fair
 
   
Cost
   
Gains
   
Losses
   
Value
 
(Amounts in thousands)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U.S. Agency securities
  $
11,289
    $
17
    $
(10
)   $
11,296
 
U.S. Treasury securities
   
19,987
     
-
     
(16
)    
19,971
 
Municipal securities
   
101,552
     
2,203
     
(107
)    
103,648
 
Single issue trust preferred securities
   
9,367
     
-
     
(483
)    
8,884
 
Mortgage-backed Agency securities
   
22,095
     
46
     
(415
)    
21,726
 
Total
  $
164,290
    $
2,266
    $
(1,031
)   $
165,525
 
Debt Securities, Held-to-maturity [Table Text Block]
   
September 30, 2018
 
   
Amortized
   
Unrealized
   
Unrealized
   
Fair
 
   
Cost
   
Gains
   
Losses
   
Value
 
(Amounts in thousands)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U.S. Agency securities
  $
17,900
    $
-
    $
(53
)   $
17,847
 
Corporate securities
   
7,147
     
-
     
(15
)    
7,132
 
Total
  $
25,047
    $
-
    $
(68
)   $
24,979
 
   
December 31, 2017
 
   
Amortized
   
Unrealized
   
Unrealized
   
Fair
 
   
Cost
   
Gains
   
Losses
   
Value
 
(Amounts in thousands)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U.S. Agency securities
  $
17,937
    $
-
    $
(49
)   $
17,888
 
Corporate securities
   
7,212
     
-
     
(16
)    
7,196
 
Total
  $
25,149
    $
-
    $
(65
)   $
25,084
 
Investments Classified by Contractual Maturity Date [Table Text Block]
   
September 30, 2018
 
   
Amortized
   
 
 
 
(Amounts in thousands)
 
Cost
   
Fair Value
 
Available-for-sale debt securities
 
 
 
 
 
 
 
 
Due within one year
  $
29,910
    $
29,888
 
Due after one year but within five years
   
11,547
     
11,644
 
Due after five years but within ten years
   
86,662
     
86,226
 
Due after ten years
   
785
     
782
 
     
128,904
     
128,540
 
Mortgage-backed securities
   
36,263
     
35,053
 
Total debt securities available for sale
  $
165,167
    $
163,593
 
                 
Held-to-maturity debt securities
 
 
 
 
 
 
 
 
Due within one year
  $
25,047
    $
24,979
 
Due after one year but within five years
   
-
     
-
 
Due after five years but within ten years
   
-
     
-
 
Due after ten years
   
-
     
-
 
Total debt securities held to maturity
  $
25,047
    $
24,979
 
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block]
   
September 30, 2018
 
   
Less than 12 Months
   
12 Months or Longer
   
Total
 
   
Fair
   
Unrealized
   
Fair
   
Unrealized
   
Fair
   
Unrealized
 
   
Value
   
Losses
   
Value
   
Losses
   
Value
   
Losses
 
(Amounts in thousands)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U.S. Treasury securities
  $
29,888
    $
(22
)   $
-
    $
-
    $
29,888
    $
(22
)
Municipal securities
   
26,034
     
(720
)    
6,938
     
(392
)    
32,972
     
(1,112
)
Mortgage-backed Agency securities
   
20,213
     
(369
)    
13,062
     
(856
)    
33,275
     
(1,225
)
Total
  $
76,135
    $
(1,111
)   $
20,000
    $
(1,248
)   $
96,135
    $
(2,359
)
   
December 31, 2017
 
   
Less than 12 Months
   
12 Months or Longer
   
Total
 
   
Fair
   
Unrealized
   
Fair
   
Unrealized
   
Fair
   
Unrealized
 
   
Value
   
Losses
   
Value
   
Losses
   
Value
   
Losses
 
(Amounts in thousands)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U.S. Agency securities
  $
10,054
    $
(10
)   $
-
    $
-
    $
10,054
    $
(10
)
U.S. Treasury securities
   
19,972
     
(16
)    
-
     
-
     
19,972
     
(16
)
Municipal securities
   
8,047
     
(55
)    
2,314
     
(52
)    
10,361
     
(107
)
Single issue trust preferred securities
   
-
     
-
     
8,884
     
(483
)    
8,884
     
(483
)
Mortgage-backed Agency securities
   
4,276
     
(25
)    
14,069
     
(390
)    
18,345
     
(415
)
Total
  $
42,349
    $
(106
)   $
25,267
    $
(925
)   $
67,616
    $
(1,031
)
Schedule of Held to Maturity Debt Securities [Table Text Block]
   
September 30, 2018
 
   
Less than 12 Months
   
12 Months or Longer
   
Total
 
   
Fair
   
Unrealized
   
Fair
   
Unrealized
   
Fair
   
Unrealized
 
   
Value
   
Losses
   
Value
   
Losses
   
Value
   
Losses
 
(Amounts in thousands)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U.S. Agency securities
  $
14,104
    $
(41
)   $
3,743
    $
(12
)   $
17,847
    $
(53
)
Corporate securities
   
3,746
     
(5
)    
3,386
     
(10
)    
7,132
     
(15
)
Total
  $
17,850
    $
(46
)   $
7,129
    $
(22
)   $
24,979
    $
(68
)
   
December 31, 2017
 
   
Less than 12 Months
   
12 Months or Longer
   
Total
 
   
Fair
   
Unrealized
   
Fair
   
Unrealized
   
Fair
   
Unrealized
 
   
Value
   
Losses
   
Value
   
Losses
   
Value
   
Losses
 
(Amounts in thousands)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U.S. Agency securities
  $
17,888
    $
(49
)   $
-
    $
-
    $
17,888
    $
(49
)
Corporate securities
   
7,196
     
(16
)    
-
     
-
     
7,196
     
(16
)
Total
  $
25,084
    $
(65
)   $
-
    $
-
    $
25,084
    $
(65
)
Realized Gain (Loss) on Investments [Table Text Block]
   
Three Months Ended
   
Nine Months Ended
 
   
September 30,
   
September 30,
 
   
2018
   
2017
   
2018
   
2017
 
(Amounts in thousands)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Gross realized gains
  $
-
    $
-
    $
-
    $
-
 
Gross realized losses
   
(618
)    
-
     
(618
)    
(657
)
Net loss on sale of securities
  $
(618
)   $
-
    $
(618
)   $
(657
)