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Regulatory Capital (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Parent Company [Member]    
Total Capital    
Total Capital $ 62,822 $ 59,737
Total Capital (to risk-weighted assets) ratio 14.20% 14.20%
Minimum amount of capital for adequacy purposes $ 35,289 $ 33,600
Minimum amount of capital for adequacy purposes, ratio 8.00% 8.00%
Common equity Tier 1 capital (to risk weighted assets)    
Common equity Capital $ 58,568 $ 54,532
Common equity Capital ratio 13.30% 13.00%
Minimum amount of Common equity Capital for adequacy purposes $ 19,850 $ 18,900
Minimum amount of Common equity Capital for adequacy purposes, ratio 4.50% 4.50%
Tier 1 Capital (to risk-weighted assets)    
Tier 1 Capital $ 58,568 $ 54,532
Tier 1 Capital (to risk-weighted assets) ratio 13.30% 13.00%
Minimum amount of Tier 1 Capital for adequacy purposes $ 26,467 $ 16,800
Minimum amount of Tier 1 Capital for adequacy purposes, ratio 6.00% 4.00%
Tier 1 Leverage Capital (to average assets)    
Tier 1 Capital $ 58,568 $ 54,532
Tier 1 Capital (to average assets) ratio 9.90% 9.70%
Minimum amount of Tier 1 Capital for adequacy purposes $ 23,641 $ 22,434
Minimum amount of Tier 1 Capital for adequacy purposes, ratio 4.00% 4.00%
ChoiceOne Bank [Member]    
Total Capital    
Total Capital $ 58,963 $ 55,723
Total Capital (to risk-weighted assets) ratio 13.40% 13.30%
Minimum amount of capital for adequacy purposes $ 35,119 $ 33,470
Minimum amount of capital for adequacy purposes, ratio 8.00% 8.00%
Minimum Capital required to be well-capitalized $ 43,899 $ 41,837
Minimum Capital required to be well-capitalized, ratio 10.00% 10.00%
Common equity Tier 1 capital (to risk weighted assets)    
Common equity Capital $ 54,709 $ 51,574
Common equity Capital ratio 12.50% 12.30%
Minimum amount of Common equity Capital for adequacy purposes $ 19,754 $ 18,827
Minimum amount of Common equity Capital for adequacy purposes, ratio 4.50% 4.50%
Minimum Common equity Capital required to be well-capitalized $ 28,534 $ 27,194
Minimum Common equity Capital required to be well-capitalized, ratio 6.50% 6.50%
Tier 1 Capital (to risk-weighted assets)    
Tier 1 Capital $ 54,709 $ 51,574
Tier 1 Capital (to risk-weighted assets) ratio 12.50% 12.30%
Minimum amount of Tier 1 Capital for adequacy purposes $ 26,339 $ 16,735
Minimum amount of Tier 1 Capital for adequacy purposes, ratio 6.00% 4.00%
Minimum Tier 1 Capital required to be well-capitalized $ 35,119 $ 25,102
Minimum Tier 1 Capital required to be well-capitalized, ratio 8.00% 6.00%
Tier 1 Leverage Capital (to average assets)    
Tier 1 Capital $ 54,709 $ 51,574
Tier 1 Capital (to average assets) ratio 9.30% 9.20%
Minimum amount of Tier 1 Capital for adequacy purposes $ 23,504 $ 22,350
Minimum amount of Tier 1 Capital for adequacy purposes, ratio 4.00% 4.00%
Minimum Tier 1 Capital required to be well-capitalized $ 29,380 $ 27,937
Minimum Tier 1 Capital required to be well-capitalized, ratio 5.00% 5.00%