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Note 4 - Loans Receivable and Related Allowance for Loan Losses (Tables)
 9 Months Ended
Sep. 30, 2019
Notes Tables  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
(Dollar amounts in thousands)
  
September 30, 2019
  
December 31, 2018
                 
Mortgage loans on real estate:
      
 
      
 
Residential first mortgages
   $
287,437
 
   $
295,405
 
Home equity loans and lines of credit
    
98,628
 
    
103,752
 
Commercial real estate
    
227,569
 
    
238,734
 
Total real estate loans
    
613,634
 
    
637,891
 
Other loans:
      
 
      
 
Commercial business
    
69,834
 
    
66,009
 
Consumer
    
11,398
 
    
11,272
 
Total other loans
    
81,232
 
    
77,281
 
Total loans, gross
    
694,866
 
    
715,172
 
Less allowance for loan losses
    
6,509
 
    
6,508
 
Total loans, net
   $
688,357
 
   $
708,664
 
Financing Receivable, Allowance for Credit Loss [Table Text Block]
(Dollar amounts in thousands)
  
Residential Mortgages
  
Home Equity & Lines of Credit
  
Commercial Real Estate
  
Commercial Business
  
Consumer
  
Total
Three months ended September 30, 2019:
      
 
      
 
      
 
      
 
      
 
      
 
Allowance for loan losses:
                                                
Beginning Balance
   $
2,225
 
   $
642
 
   $
3,043
 
   $
615
 
   $
55
 
   $
6,580
 
Charge-offs
    
—
 
    
(22
)
    
(8
)
    
—
 
    
(39
)
    
(69
)
Recoveries
    
—
 
    
4
 
    
104
 
    
—
 
    
35
 
    
143
 
Provision
    
16
 
    
11
 
    
(185
)
    
5
 
    
8
 
    
(145
)
Ending Balance
   $
2,241
 
   $
635
 
   $
2,954
 
   $
620
 
   $
59
 
   $
6,509
 
                                                 
Nine months ended September 30, 2019:
      
 
      
 
      
 
      
 
      
 
      
 
Allowance for loan losses:
                                                
Beginning Balance
   $
2,198
 
   $
648
 
   $
3,106
 
   $
500
 
   $
56
 
   $
6,508
 
Charge-offs
    
(204
)
    
(56
)
    
(36
)
    
(134
)
    
(114
)
    
(544
)
Recoveries
    
40
 
    
5
 
    
132
 
    
—
 
    
63
 
    
240
 
Provision
    
207
 
    
38
 
    
(248
)
    
254
 
    
54
 
    
305
 
Ending Balance
   $
2,241
 
   $
635
 
   $
2,954
 
   $
620
 
   $
59
 
   $
6,509
 
                                                 
At September 30, 2019:
      
 
      
 
      
 
      
 
      
 
      
 
Ending ALL balance attributable to loans:
                                                
Individually evaluated for impairment
   $
4
 
   $
—
 
   $
—
 
   $
—
 
   $
—
 
   $
4
 
Acquired loans collectively evaluated for impairment
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
Originated loans collectively evaluated for impairment
    
2,237
 
    
635
 
    
2,954
 
    
620
 
    
59
 
    
6,505
 
Total
   $
2,241
 
   $
635
 
   $
2,954
 
   $
620
 
   $
59
 
   $
6,509
 
Total loans:
                                                
Individually evaluated for impairment
   $
366
 
   $
4
 
   $
2,471
 
   $
40
 
   $
—
 
   $
2,881
 
Acquired loans collectively evaluated for impairment
    
64,037
 
    
11,432
 
    
45,619
 
    
9,425
 
    
2,227
 
    
132,740
 
Originated loans collectively evaluated for impairment
    
223,034
 
    
87,192
 
    
179,479
 
    
60,369
 
    
9,171
 
    
559,245
 
Total
   $
287,437
 
   $
98,628
 
   $
227,569
 
   $
69,834
 
   $
11,398
 
   $
694,866
 
                                                 
At December 31, 2018:
      
 
      
 
      
 
      
 
      
 
      
 
Ending ALL balance attributable to loans:
                                                
Individually evaluated for impairment
   $
12
 
   $
—
 
   $
—
 
   $
—
 
   $
—
 
   $
12
 
Acquired loans collectively evaluated for impairment
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
Originated loans collectively evaluated for impairment
    
2,186
 
    
648
 
    
3,106
 
    
500
 
    
56
 
    
6,496
 
Total
   $
2,198
 
   $
648
 
   $
3,106
 
   $
500
 
   $
56
 
   $
6,508
 
Total loans:
                                                
Individually evaluated for impairment
   $
389
 
   $
6
 
   $
34
 
   $
39
 
   $
—
 
   $
468
 
Acquired loans collectively evaluated for impairment
    
72,654
 
    
13,750
 
    
56,690
 
    
12,974
 
    
3,306
 
    
159,374
 
Originated loans collectively evaluated for impairment
    
222,362
 
    
89,996
 
    
182,010
 
    
52,996
 
    
7,966
 
    
555,330
 
Total
   $
295,405
 
   $
103,752
 
   $
238,734
 
   $
66,009
 
   $
11,272
 
   $
715,172
 
                                                 
Three months ended September 30, 2018:
      
 
      
 
      
 
      
 
      
 
      
 
Allowance for loan losses:
                                                
Beginning Balance
   $
2,033
 
   $
650
 
   $
2,882
 
   $
499
 
   $
54
 
   $
6,118
 
Charge-offs
    
—
 
    
(26
)
    
(6
)
    
—
 
    
(44
)
    
(76
)
Recoveries
    
—
 
    
1
 
    
13
 
    
—
 
    
4
 
    
18
 
Provision
    
128
 
    
34
 
    
81
 
    
11
 
    
46
 
    
300
 
Ending Balance
   $
2,161
 
   $
659
 
   $
2,970
 
   $
510
 
   $
60
 
   $
6,360
 
                                                 
Nine months ended September 30, 2018:
      
 
      
 
      
 
      
 
      
 
      
 
Allowance for loan losses:
                                                
Beginning Balance
   $
2,090
 
   $
646
 
   $
2,753
 
   $
585
 
   $
53
 
   $
6,127
 
Charge-offs
    
(61
)
    
(109
)
    
(424
)
    
—
 
    
(213
)
    
(807
)
Recoveries
    
3
 
    
12
 
    
32
 
    
1
 
    
12
 
    
60
 
Provision
    
129
 
    
110
 
    
609
 
    
(76
)
    
208
 
    
980
 
Ending Balance
   $
2,161
 
   $
659
 
   $
2,970
 
   $
510
 
   $
60
 
   $
6,360
 
Impaired Financing Receivables [Table Text Block]
(Dollar amounts in thousands)
                                                
   
Impaired Loans with Specific Allowance
   
As of September 30, 2019
  
For three months ended September 30, 2019
   
Unpaid Principal Balance
  
Recorded Investment
  
Related Allowance
  
Average Recorded Investment
  
Interest Income Recognized in Period
  
Cash Basis Interest Recognized in Period
Residential first mortgages
   $
72
 
   $
72
 
   $
4
 
   $
72
 
   $
1
 
   $
1
 
Home equity and lines of credit
    
4
 
    
4
 
    
—
 
    
5
 
    
—
 
    
—
 
Commercial real estate
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
Commercial business
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
Consumer
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
Total
   $
76
 
   $
76
 
   $
4
 
   $
77
 
   $
1
 
   $
1
 
   
For the nine months ended September 30, 2019
   
Average Recorded Investment
  
Interest Income Recognized in Period
  
Cash Basis Interest Recognized in Period
Residential first mortgages   $
73
 
   $
3
 
   $
3
 
Home equity and lines of credit
    
5
 
    
—
 
    
—
 
Commercial real estate
    
—
 
    
—
 
    
—
 
Commercial business
    
16
 
    
—
 
    
—
 
Consumer
    
—
 
    
—
 
    
—
 
Total   $
94
 
   $
3
 
   $
3
 
   
Impaired Loans with No Specific Allowance
   
As of September 30, 2019
  
For three months ended September 30, 2019
   
Unpaid Principal Balance
  
Recorded Investment
  
Average Recorded Investment
  
Interest Income Recognized in Period
  
Cash Basis Interest Recognized in Period
Residential first mortgages
   $
369
 
   $
294
 
   $
298
 
   $
2
 
   $
2
 
Home equity and lines of credit
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
Commercial real estate
    
2,471
 
    
2,471
 
    
2,475
 
    
34
 
    
33
 
Commercial business
    
40
 
    
40
 
    
139
 
    
—
 
    
—
 
Consumer
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
Total
   $
2,880
 
   $
2,805
 
   $
2,912
 
   $
36
 
   $
35
 
   
For the nine months ended September 30, 2019
   
Average Recorded Investment
  
Interest Income Recognized in Period
  
Cash Basis Interest Recognized in Period
Residential first mortgages
   $
305
 
   $
3
 
   $
3
 
Home equity and lines of credit
    
—
 
    
—
 
    
—
 
Commercial real estate
    
1,254
 
    
87
 
    
34
 
Commercial business
    
89
 
    
7
 
    
2
 
Consumer
    
—
 
    
—
 
    
—
 
Total
   $
1,648
 
   $
97
 
   $
39
 
(Dollar amounts in thousands)
      
 
      
 
      
 
      
 
      
 
      
 
   
Impaired Loans with Specific Allowance
   
As of December 31, 2018
  
For the year ended December 31, 2018
   
Unpaid Principal Balance
  
Recorded Investment
  
Related Allowance
  
Average Recorded Investment
  
Interest Income Recognized in Period
  
Cash Basis Interest Recognized in Period
Residential first mortgages
   $
74
 
   $
74
 
   $
12
 
   $
74
 
   $
2
 
   $
2
 
Home equity and lines of credit    
6
 
    
6
 
    
—
 
    
7
 
    
—
 
    
—
 
Commercial real estate    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
Commercial business    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
Consumer    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
Total   $
80
 
   $
80
 
   $
12
 
   $
81
 
   $
2
 
   $
2
 
   
Impaired Loans with No Specific Allowance
   
As of December 31, 2018
  
For the year ended December 31, 2018
   
Unpaid Principal Balance
  
Recorded Investment
  
Average Recorded Investment
  
Interest Income Recognized in Period
  
Cash Basis Interest Recognized in Period
Residential first mortgages
   $
427
 
   $
315
 
   $
334
 
   $
5
 
   $
5
 
Home equity and lines of credit
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
Commercial real estate
    
34
 
    
34
 
    
768
 
    
156
 
    
73
 
Commercial business
    
39
 
    
39
 
    
248
 
    
74
 
    
74
 
Consumer
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
Total
   $
500
 
   $
388
 
   $
1,350
 
   $
235
 
   $
152
 
(Dollar amounts in thousands)
      
 
      
 
      
 
      
 
      
 
      
 
   
Impaired Loans with Specific Allowance
   
As of September 30, 2018
  
For the three months ended September 30, 2018
   
Unpaid Principal Balance
  
Recorded Investment
  
Related Allowance
  
Average Recorded Investment
  
Interest Income Recognized in Period
  
Cash Basis Interest Recognized in Period
Residential first mortgages
   $
74
 
   $
74
 
   $
7
 
   $
74
 
   $
1
 
   $
1
 
Home equity and lines of credit
    
6
 
    
6
 
    
—
 
    
7
 
    
—
 
    
—
 
Commercial real estate
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
Commercial business
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
Consumer
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
Total
   $
80
 
   $
80
 
   $
7
 
   $
81
 
   $
1
 
   $
1
 
   
For the nine months ended September 30, 2018
   
Average Recorded Investment
  
Interest Income Recognized in Period
  
Cash Basis Interest Recognized in Period
Residential first mortgages
   $
75
 
   $
2
 
   $
2
 
Home equity and lines of credit
    
7
 
    
—
 
    
—
 
Commercial real estate
    
—
 
    
—
 
    
—
 
Commercial business
    
—
 
    
—
 
    
—
 
Consumer
    
—
 
    
—
 
    
—
 
Total
   $
82
 
   $
2
 
   $
2
 
   
Impaired Loans with No Specific Allowance
   
As of September 30, 2018
  
For the three months ended September 30, 2018
   
Unpaid Principal Balance
  
Recorded Investment
  
Average Recorded Investment
  
Interest Income Recognized in Period
  
Cash Basis Interest Recognized in Period
Residential first mortgages
   $
438
 
   $
327
 
   $
330
 
   $
2
 
   $
2
 
Home equity and lines of credit
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
Commercial real estate
    
2,512
 
    
2,512
 
    
1,278
 
    
83
 
    
2
 
Commercial business
    
39
 
    
39
 
    
39
 
    
1
 
    
1
 
Consumer
    
—
 
    
—
 
    
—
 
    
—
 
    
—
 
Total
   $
2,989
 
   $
2,878
 
   $
1,647
 
   $
86
 
   $
5
 
   
For the nine months ended September 30, 2018
   
Average Recorded Investment
  
Interest Income Recognized in Period
  
Cash Basis Interest Recognized in Period
Residential first mortgages
   $
338
 
   $
3
 
   $
3
 
Home equity and lines of credit
    
—
 
    
—
 
    
—
 
Commercial real estate
    
952
 
    
125
 
    
42
 
Commercial business
    
300
 
    
74
 
    
74
 
Consumer
    
—
 
    
—
 
    
—
 
Total
   $
1,590
 
   $
202
 
   $
119
 
Financing Receivable Credit Quality Indicators [Table Text Block]
(Dollar amounts in thousands)
      
 
      
 
      
 
      
 
      
 
      
 
   
Not Rated
  
Pass
  
Special Mention
  
Substandard
  
Doubtful
  
Total
September 30, 2019:
      
 
      
 
      
 
      
 
      
 
      
 
Residential first mortgages
   $
286,353
 
   $
—
 
   $
—
 
   $
1,084
 
   $
—
 
   $
287,437
 
Home equity and lines of credit
    
97,956
 
    
—
 
    
—
 
    
672
 
    
—
 
    
98,628
 
Commercial real estate
    
—
 
    
211,535
 
    
3,381
 
    
12,653
 
    
—
 
    
227,569
 
Commercial business
    
—
 
    
66,935
 
    
204
 
    
2,695
 
    
—
 
    
69,834
 
Consumer
    
11,317
 
    
—
 
    
—
 
    
81
 
    
—
 
    
11,398
 
Total loans
   $
395,626
 
   $
278,470
 
   $
3,585
 
   $
17,185
 
   $
—
 
   $
694,866
 
                                                 
December 31, 2018:
      
 
      
 
      
 
      
 
      
 
      
 
Residential first mortgages
   $
293,919
 
   $
—
 
   $
—
 
   $
1,486
 
   $
—
 
   $
295,405
 
Home equity and lines of credit
    
102,869
 
    
—
 
    
—
 
    
883
 
    
—
 
    
103,752
 
Commercial real estate
    
—
 
    
222,335
 
    
5,942
 
    
10,457
 
    
—
 
    
238,734
 
Commercial business
    
—
 
    
62,022
 
    
542
 
    
3,445
 
    
—
 
    
66,009
 
Consumer
    
11,157
 
    
—
 
    
—
 
    
115
 
    
—
 
    
11,272
 
Total loans
   $
407,945
 
   $
284,357
 
   $
6,484
 
   $
16,386
 
   $
—
 
   $
715,172
 
Financing Receivable, Past Due [Table Text Block]
(Dollar amounts in thousands)
      
 
      
 
      
 
      
 
      
 
      
 
   
Performing
  
Nonperforming
    
 
 
   
Accruing Loans Not Past Due
  
Accruing 30-59 Days Past Due
  
Accruing 60-89 Days Past Due
  
Accruing 90+ Days Past Due
  
Nonaccrual
  
Total
September 30, 2019:
      
 
      
 
      
 
      
 
      
 
      
 
Residential first mortgages
   $
282,766
 
   $
2,626
 
   $
1,024
 
   $
197
 
   $
824
 
   $
287,437
 
Home equity and lines of credit
    
97,361
 
    
438
 
    
187
 
    
110
 
    
532
 
    
98,628
 
Commercial real estate
    
222,078
 
    
2,172
 
    
126
 
    
—
 
    
3,193
 
    
227,569
 
Commercial business
    
69,653
 
    
76
 
    
65
 
    
—
 
    
40
 
    
69,834
 
Consumer
    
11,240
 
    
75
 
    
2
 
    
—
 
    
81
 
    
11,398
 
Total loans
   $
683,098
 
   $
5,387
 
   $
1,404
 
   $
307
 
   $
4,670
 
   $
694,866
 
                                                 
December 31, 2018:
      
 
      
 
      
 
      
 
      
 
      
 
Residential first mortgages
   $
289,732
 
   $
3,586
 
   $
747
 
   $
485
 
   $
855
 
   $
295,405
 
Home equity and lines of credit
    
101,920
 
    
707
 
    
351
 
    
287
 
    
487
 
    
103,752
 
Commercial real estate
    
232,865
 
    
5,013
 
    
231
 
    
19
 
    
606
 
    
238,734
 
Commercial business
    
65,538
 
    
50
 
    
247
 
    
—
 
    
174
 
    
66,009
 
Consumer
    
10,961
 
    
160
 
    
36
 
    
—
 
    
115
 
    
11,272
 
Total loans
   $
701,016
 
   $
9,516
 
   $
1,612
 
   $
791
 
   $
2,237
 
   $
715,172
 
Financing Receivable, Nonaccrual [Table Text Block]
(Dollar amounts in thousands)
      
 
      
 
      
 
      
 
      
 
   
Not Past Due
  
30-59 Days Past Due
  
60-89 Days Past Due
  
90 Days + Past Due
  
Total
September 30, 2019:
      
 
      
 
      
 
      
 
      
 
Residential first mortgages
   $
315
 
   $
72
 
   $
—
 
   $
437
 
   $
824
 
Home equity and lines of credit
    
4
 
    
—
 
    
—
 
    
528
 
    
532
 
Commercial real estate
    
135
 
    
454
 
    
45
 
    
2,559
 
    
3,193
 
Commercial business
    
40
 
    
—
 
    
—
 
    
—
 
    
40
 
Consumer
    
—
 
    
—
 
    
—
 
    
81
 
    
81
 
Total loans
   $
494
 
   $
526
 
   $
45
 
   $
3,605
 
   $
4,670
 
                                         
December 31, 2018:
      
 
      
 
      
 
      
 
      
 
Residential first mortgages
   $
335
 
   $
—
 
   $
74
 
   $
446
 
   $
855
 
Home equity and lines of credit
    
6
 
    
—
 
    
—
 
    
481
 
    
487
 
Commercial real estate
    
111
 
    
265
 
    
—
 
    
230
 
    
606
 
Commercial business
    
—
 
    
—
 
    
39
 
    
135
 
    
174
 
Consumer
    
—
 
    
—
 
    
—
 
    
115
 
    
115
 
Total loans
   $
452
 
   $
265
 
   $
113
 
   $
1,407
 
   $
2,237