Note 17 - Regulatory Matters (Details) - Regulatory Ratios of the Consolidated Company and its Subsidiary Banks (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Consolidated [Member]
Tier 1 Risk-based Capital1
Actual - Amount (in Dollars)	$ 216,162	[1]	$ 206,470	[1]
Actual - Ratio	18.95%	[1]	18.27%	[1]
For Capital Adequacy Purposes - Amount (in Dollars)	45,623	[1]	45,215	[1]
For Capital Adequacy Purposes - Ratio	4.00%	[1]	4.00%	[1]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Amount (in Dollars)		[1]		[1]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Ratio		[1]		[1]
Total Risk-based Capital 1
Actual - Amount (in Dollars)	230,497	[1]	220,741	[1]
Actual - Ratio	20.21%	[1]	19.53%	[1]
For Capital Adequacy Purposes - Amount (in Dollars)	91,245	[1]	90,431	[1]
For Capital Adequacy Purposes - Ratio	8.00%	[1]	8.00%	[1]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Amount (in Dollars)		[1]		[1]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Ratio		[1]		[1]
Tier 1 Leverage Capital 3
Actual - Amount (in Dollars)	216,162	[2]	206,470	[2]
Actual - Ratio	11.90%	[2]	11.24%	[2]
For Capital Adequacy Purposes - Amount (in Dollars)	72,677	[2]	73,479	[2]
For Capital Adequacy Purposes - Ratio	4.00%	[2]	4.00%	[2]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Amount (in Dollars)		[2]		[2]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Ratio		[2]		[2]
Farmers Bank [Member]
Tier 1 Risk-based Capital1
Actual - Amount (in Dollars)	67,409	[1]	69,582	[1],[3]
Actual - Ratio	17.56%	[1]	17.94%	[1],[3]
For Capital Adequacy Purposes - Amount (in Dollars)	15,351	[1]	15,515	[1],[3]
For Capital Adequacy Purposes - Ratio	4.00%	[1]	4.00%	[1],[3]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Amount (in Dollars)	23,026	[1]	23,273	[1],[3]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Ratio	6.00%	[1]	6.00%	[1],[3]
Total Risk-based Capital 1
Actual - Amount (in Dollars)	72,231	[1]	74,475	[1],[3]
Actual - Ratio	18.82%	[1]	19.20%	[1],[3]
For Capital Adequacy Purposes - Amount (in Dollars)	30,702	[1]	31,030	[1],[3]
For Capital Adequacy Purposes - Ratio	8.00%	[1]	8.00%	[1],[3]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Amount (in Dollars)	38,377	[1]	38,788	[1],[3]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Ratio	10.00%	[1]	10.00%	[1],[3]
Tier 1 Leverage Capital 3
Actual - Amount (in Dollars)	67,409	[2]	69,582	[2],[3]
Actual - Ratio	9.60%	[2]	9.68%	[2],[3]
For Capital Adequacy Purposes - Amount (in Dollars)	28,077	[2]	28,768	[2],[3]
For Capital Adequacy Purposes - Ratio	4.00%	[2]	4.00%	[2],[3]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Amount (in Dollars)	35,096	[2]	35,960	[2],[3]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Ratio	5.00%	[2]	5.00%	[2],[3]
United Bank [Member]
Tier 1 Risk-based Capital1
Actual - Amount (in Dollars)	51,336	[1],[3]	51,695	[1],[3]
Actual - Ratio	15.06%	[1],[3]	15.41%	[1],[3]
For Capital Adequacy Purposes - Amount (in Dollars)	13,634	[1],[3]	13,420	[1],[3]
For Capital Adequacy Purposes - Ratio	4.00%	[1],[3]	4.00%	[1],[3]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Amount (in Dollars)	20,450	[1],[3]	20,130	[1],[3]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Ratio	6.00%	[1],[3]	6.00%	[1],[3]
Total Risk-based Capital 1
Actual - Amount (in Dollars)	55,664	[1],[3]	55,980	[1],[3]
Actual - Ratio	16.33%	[1],[3]	16.69%	[1],[3]
For Capital Adequacy Purposes - Amount (in Dollars)	27,267	[1],[3]	26,839	[1],[3]
For Capital Adequacy Purposes - Ratio	8.00%	[1],[3]	8.00%	[1],[3]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Amount (in Dollars)	34,084	[1],[3]	33,549	[1],[3]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Ratio	10.00%	[1],[3]	10.00%	[1],[3]
Tier 1 Leverage Capital 3
Actual - Amount (in Dollars)	51,336	[2],[3]	51,695	[2],[3]
Actual - Ratio	9.67%	[2],[3]	9.45%	[2],[3]
For Capital Adequacy Purposes - Amount (in Dollars)	21,233	[2],[3]	21,878	[2],[3]
For Capital Adequacy Purposes - Ratio	4.00%	[2],[3]	4.00%	[2],[3]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Amount (in Dollars)	26,542	[2],[3]	27,347	[2],[3]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Ratio	5.00%	[2],[3]	5.00%	[2],[3]
First Citizens Bank [Member]
Tier 1 Risk-based Capital1
Actual - Amount (in Dollars)	28,814	[1]	29,017	[1]
Actual - Ratio	12.92%	[1]	13.57%	[1]
For Capital Adequacy Purposes - Amount (in Dollars)	8,917	[1]	8,552	[1]
For Capital Adequacy Purposes - Ratio	4.00%	[1]	4.00%	[1]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Amount (in Dollars)	13,376	[1]	12,828	[1]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Ratio	6.00%	[1]	6.00%	[1]
Total Risk-based Capital 1
Actual - Amount (in Dollars)	30,485	[1]	30,908	[1]
Actual - Ratio	13.67%	[1]	14.46%	[1]
For Capital Adequacy Purposes - Amount (in Dollars)	17,835	[1]	17,104	[1]
For Capital Adequacy Purposes - Ratio	8.00%	[1]	8.00%	[1]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Amount (in Dollars)	22,294	[1]	21,380	[1]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Ratio	10.00%	[1]	10.00%	[1]
Tier 1 Leverage Capital 3
Actual - Amount (in Dollars)	28,814	[2]	29,017	[2]
Actual - Ratio	9.03%	[2]	9.42%	[2]
For Capital Adequacy Purposes - Amount (in Dollars)	12,768	[2]	12,327	[2]
For Capital Adequacy Purposes - Ratio	4.00%	[2]	4.00%	[2]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Amount (in Dollars)	15,960	[2]	15,409	[2]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Ratio	5.00%	[2]	5.00%	[2]
Citizens Northern [Member]
Tier 1 Risk-based Capital1
Actual - Amount (in Dollars)	24,455	[1],[3]	23,553	[1],[3]
Actual - Ratio	13.57%	[1],[3]	12.97%	[1],[3]
For Capital Adequacy Purposes - Amount (in Dollars)	7,208	[1],[3]	7,264	[1],[3]
For Capital Adequacy Purposes - Ratio	4.00%	[1],[3]	4.00%	[1],[3]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Amount (in Dollars)	10,812	[1],[3]	10,896	[1],[3]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Ratio	6.00%	[1],[3]	6.00%	[1],[3]
Total Risk-based Capital 1
Actual - Amount (in Dollars)	26,708	[1],[3]	25,826	[1],[3]
Actual - Ratio	14.82%	[1],[3]	14.22%	[1],[3]
For Capital Adequacy Purposes - Amount (in Dollars)	14,415	[1],[3]	14,528	[1],[3]
For Capital Adequacy Purposes - Ratio	8.00%	[1],[3]	8.00%	[1],[3]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Amount (in Dollars)	18,019	[1],[3]	18,159	[1],[3]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Ratio	10.00%	[1],[3]	10.00%	[1],[3]
Tier 1 Leverage Capital 3
Actual - Amount (in Dollars)	24,455	[2],[3]	23,553	[2],[3]
Actual - Ratio	9.67%	[2],[3]	9.36%	[2],[3]
For Capital Adequacy Purposes - Amount (in Dollars)	10,113	[2],[3]	10,063	[2],[3]
For Capital Adequacy Purposes - Ratio	4.00%	[2],[3]	4.00%	[2],[3]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Amount (in Dollars)	$ 12,641	[2],[3]	$ 12,579	[2],[3]
To Be Well-Capitalized Under Prompt Corrective Action Provisions - Ratio	5.00%	[2],[3]	5.00%	[2],[3]

[1] 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%).

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

[3] See discussion below under the caption "Summary of Regulatory Agreements" for minimum capital ratios required as part of the bank's regulatory agreement.