Note 10 - Regulatory Matters (Details)	Mar. 31, 2014		Dec. 31, 2013
Preferred Stock [Member]
Note 10 - Regulatory Matters (Details) [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in Shares)	10,000
United Bank [Member] | Compliance [Member]
Note 10 - Regulatory Matters (Details) [Line Items]
Tier One Leverage Capital to Average Assets	9.00%
Capital to Risk Weighted Assets	13.00%
United Bank [Member]
Note 10 - Regulatory Matters (Details) [Line Items]
Tier One Leverage Capital to Average Assets	9.84%	[1]	9.67%	[1]
Capital to Risk Weighted Assets	16.60%	[2]	16.33%	[2]
Citizens Northern [Member] | Compliance [Member]
Note 10 - Regulatory Matters (Details) [Line Items]
Tier One Leverage Capital to Average Assets	9.00%
Citizens Northern [Member]
Note 10 - Regulatory Matters (Details) [Line Items]
Tier One Leverage Capital to Average Assets	9.56%	[1]	9.67%	[1]
Capital to Risk Weighted Assets	14.91%	[2]	14.82%	[2]
Safest Assets [Member]
Note 10 - Regulatory Matters (Details) [Line Items]
Risk Weighting of Assets	0.00%
Riskier Assets [Member]
Note 10 - Regulatory Matters (Details) [Line Items]
Risk Weighting of Assets	100.00%

[1] Tier 1 Leverage ratio is computed by dividing a bank's Tier 1 Capital by its total quarterly average assets, as defined by regulation.

[2] Tier 1 Risk-based and Total Risk-based Capital ratios are computed by dividing a bank's Tier 1 or Total Capital, as defined by regulation, by a risk-weighted sum of the bank's assets, with the risk weighting determined by general standards established by regulation. The safest assets (e.g., government obligations) are assigned a weighting of 0% with riskier assets receiving higher ratings (e.g., ordinary commercial loans are assigned a weighting of 100%).