Note 18 - Regulatory Matters (Tables)
 12 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]
(Dollars in thousands)
  
Actual
    
For Capital
Adequacy Purposes
    
To Be Well-Capitalized
Under Prompt Corrective
Action Provisions
  
December 31, 201
6
  
Amount
    
Ratio
   
Amount
    
Ratio
   
Amount
    
Ratio
 
Common Equity Tier 1
Risk-based Capital
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consolidated
   $
187,474
      
16.43
 %   $
51,349
      
4.50
 %    
N/A
      
N/A
  
Farmers Bank
    
64,016
      
16.53
      
17,425
      
4.50
     $
25,170
      
6.50
 %
United Bank
    
58,180
      
15.54
      
16,848
      
4.50
      
24,337
      
6.50
  
First Citizens
    
28,324
      
13.56
      
9,401
      
4.50
      
13,580
      
6.50
  
Citizens Northern
    
24,661
      
15.24
      
7,280
      
4.50
      
10,516
      
6.50
  
Tier 1 Risk-based Capital
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consolidated
   $
219,974
      
19.28
 %   $
68,466
      
6.00
 %    
N/A
      
N/A
  
Farmers Bank
    
64,016
      
16.53
      
23,234
      
6.00
     $
30,978
      
8.00
 %
United Bank
    
58,180
      
15.54
      
22,465
      
6.00
      
29,953
      
8.00
  
First Citizens
    
28,324
      
13.56
      
12,535
      
6.00
      
16,714
      
8.00
  
Citizens Northern
    
24,661
      
15.24
      
9,707
      
6.00
      
12,942
      
8.00
  
Total Risk-based Capital
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consolidated
   $
229,318
      
20.10
 %   $
91,288
      
8.00
 %    
N/A
      
N/A
  
Farmers Bank
    
66,720
      
17.23
      
30,978
      
8.00
     $
38,723
      
10.00
 %
United Bank
    
61,680
      
16.47
      
29,953
      
8.00
      
37,441
      
10.00
  
First Citizens
    
29,590
      
14.16
      
16,714
      
8.00
      
20,892
      
10.00
  
Citizens Northern
    
26,534
      
16.40
      
12,942
      
8.00
      
16,178
      
10.00
  
Tier 1 Leverage Capital
2
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consolidated
   $
219,974
      
13.20
 %   $
66,656
      
4.00
 %    
N/A
      
N/A
  
Farmers Bank
    
64,016
      
9.80
      
26,121
      
4.00
     $
32,651
      
5.00
 %
United Bank
    
58,180
      
12.38
      
18,798
      
4.00
      
23,497
      
5.00
  
First Citizens
    
28,324
      
9.76
      
11,606
      
4.00
      
14,507
      
5.00
  
Citizens Northern
    
24,661
      
10.68
      
9,234
      
4.00
      
11,543
      
5.00
  
(Dollars in thousands)
  
Actual
    
For Capital
Adequacy Purposes
    
To Be Well-Capitalized
Under Prompt Corrective
Action Provisions
  
December 31, 201
5
  
Amount
    
Ratio
   
Amount
    
Ratio
   
Amount
    
Ratio
 
Common Equity Tier 1
Risk-based Capital
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consolidated
   $
172,871
      
14.91
 %   $
52,184
      
4.50
 %    
N/A
      
N/A
  
Farmers Bank
    
63,552
      
15.57
      
18,366
      
4.50
     $
26,529
      
6.50
 %
United Bank
    
65,862
      
18.67
      
15,879
      
4.50
      
22,936
      
6.50
  
First Citizens
    
28,743
      
13.55
      
9,543
      
4.50
      
13,784
      
6.50
  
Citizens Northern
    
25,770
      
14.42
      
8,044
      
4.50
      
11,619
      
6.50
  
Tier 1 Risk-based Capital
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consolidated
   $
220,371
      
19.00
 %   $
69,579
      
6.00
 %    
N/A
      
N/A
  
Farmers Bank
    
63,552
      
15.57
      
24,488
      
6.00
     $
32,651
      
8.00
 %
United Bank
    
65,862
      
18.67
      
21,171
      
6.00
      
28,228
      
8.00
  
First Citizens
    
28,743
      
13.55
      
12,724
      
6.00
      
16,965
      
8.00
  
Citizens Northern
    
25,770
      
14.42
      
10,725
      
6.00
      
14,300
      
8.00
  
Total Risk-based Capital
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consolidated
   $
230,686
      
19.89
 %   $
92,772
      
8.00
 %    
N/A
      
N/A
  
Farmers Bank
    
66,728
      
16.35
      
32,651
      
8.00
     $
40,814
      
10.00
 %
United Bank
    
69,456
      
19.68
      
28,228
      
8.00
      
35,286
      
10.00
  
First Citizens
    
30,048
      
14.17
      
16,965
      
8.00
      
21,207
      
10.00
  
Citizens Northern
    
28,004
      
15.67
      
14,300
      
8.00
      
17,875
      
10.00
  
Tier 1 Leverage Capital
2
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consolidated
   $
220,371
      
12.46
 %   $
70,746
      
4.00
 %    
N/A
      
N/A
  
Farmers Bank
    
63,552
      
9.20
      
27,629
      
4.00
     $
34,537
      
5.00
 %
United Bank
    
65,862
      
12.89
      
20,442
      
4.00
      
25,553
      
5.00
  
First Citizens
    
28,743
      
9.20
      
12,493
      
4.00
      
15,617
      
5.00
  
Citizens Northern
    
25,770
      
10.79
      
9,555
      
4.00
      
11,943
      
5.00