Note 22 - Capital Adequacy (Details) - Actual and Required Capital Amounts at Year End and Ratios (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Total Capital to Risk Weighted Assets
Actual Amount (in Dollars)	$ 149,581	$ 155,135
Actual Ratio	15.33%	15.99%
Minimum Required For Capital Adequacy Purposes Amount (in Dollars)	78,058	77,618
Minimum Required For Capital Adequacy Purposes Ratio	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount (in Dollars)	97,572	97,023
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	10.00%	10.00%
Tier 1 (Core) Capital to Risk Weighted Assets
Actual Amount (in Dollars)	137,355	142,884
Actual Ratio	14.08%	14.73%
Minimum Required For Capital Adequacy Purposes Amount (in Dollars)	39,029	38,809
Minimum Required For Capital Adequacy Purposes Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount (in Dollars)	58,543	58,214
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	6.00%	6.00%
Tier 1 (Core) Capital to Average Assets
Actual Amount (in Dollars)	137,355	142,884
Actual Ratio	9.49%	9.71%
Minimum Required For Capital Adequacy Purposes Amount (in Dollars)	57,910	58,854
Minimum Required For Capital Adequacy Purposes Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount (in Dollars)	72,387	73,568
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	5.00%	5.00%
FirstBank [Member]
Total Capital to Risk Weighted Assets
Actual Amount (in Dollars)	109,076
Actual Ratio	13.77%
Minimum Required For Capital Adequacy Purposes Amount (in Dollars)	63,376
Minimum Required For Capital Adequacy Purposes Ratio	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount (in Dollars)	79,220
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	10.00%
Tier 1 (Core) Capital to Risk Weighted Assets
Actual Amount (in Dollars)	99,129
Actual Ratio	12.51%
Minimum Required For Capital Adequacy Purposes Amount (in Dollars)	31,688
Minimum Required For Capital Adequacy Purposes Ratio	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount (in Dollars)	47,532
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	6.00%
Tier 1 (Core) Capital to Average Assets
Actual Amount (in Dollars)	99,129
Actual Ratio	8.19%
Minimum Required For Capital Adequacy Purposes Amount (in Dollars)	48,393
Minimum Required For Capital Adequacy Purposes Ratio	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount (in Dollars)	60,491
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	5.00%
Keystone Community Bank [Member]
Total Capital to Risk Weighted Assets
Actual Amount (in Dollars)	25,070	28,641
Actual Ratio	13.94%	15.78%
Minimum Required For Capital Adequacy Purposes Amount (in Dollars)	14,390	14,521
Minimum Required For Capital Adequacy Purposes Ratio	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount (in Dollars)	17,987	18,151
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	10.00%	10.00%
Tier 1 (Core) Capital to Risk Weighted Assets
Actual Amount (in Dollars)	22,795	26,333
Actual Ratio	12.67%	14.51%
Minimum Required For Capital Adequacy Purposes Amount (in Dollars)	7,195	7,260
Minimum Required For Capital Adequacy Purposes Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount (in Dollars)	10,792	10,891
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	6.00%	6.00%
Tier 1 (Core) Capital to Average Assets
Actual Amount (in Dollars)	22,795	26,333
Actual Ratio	9.91%	11.61%
Minimum Required For Capital Adequacy Purposes Amount (in Dollars)	9,204	9,072
Minimum Required For Capital Adequacy Purposes Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount (in Dollars)	11,505	11,340
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	5.00%	5.00%
Alma [Member]
Total Capital to Risk Weighted Assets
Actual Amount (in Dollars)		33,195
Actual Ratio		15.81%
Minimum Required For Capital Adequacy Purposes Amount (in Dollars)		16,797
Minimum Required For Capital Adequacy Purposes Ratio		8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount (in Dollars)		20,997
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio		10.00%
Tier 1 (Core) Capital to Risk Weighted Assets
Actual Amount (in Dollars)		30,541
Actual Ratio		14.55%
Minimum Required For Capital Adequacy Purposes Amount (in Dollars)		8,399
Minimum Required For Capital Adequacy Purposes Ratio		4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount (in Dollars)		12,598
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio		6.00%
Tier 1 (Core) Capital to Average Assets
Actual Amount (in Dollars)		30,541
Actual Ratio		8.15%
Minimum Required For Capital Adequacy Purposes Amount (in Dollars)		14,998
Minimum Required For Capital Adequacy Purposes Ratio		4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount (in Dollars)		18,748
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio		5.00%
Mt Pleasant [Member]
Total Capital to Risk Weighted Assets
Actual Amount (in Dollars)		37,816
Actual Ratio		12.74%
Minimum Required For Capital Adequacy Purposes Amount (in Dollars)		23,748
Minimum Required For Capital Adequacy Purposes Ratio		8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount (in Dollars)		29,685
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio		10.00%
Tier 1 (Core) Capital to Risk Weighted Assets
Actual Amount (in Dollars)		34,097
Actual Ratio		11.49%
Minimum Required For Capital Adequacy Purposes Amount (in Dollars)		11,874
Minimum Required For Capital Adequacy Purposes Ratio		4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount (in Dollars)		17,811
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio		6.00%
Tier 1 (Core) Capital to Average Assets
Actual Amount (in Dollars)		34,097
Actual Ratio		8.12%
Minimum Required For Capital Adequacy Purposes Amount (in Dollars)		16,765
Minimum Required For Capital Adequacy Purposes Ratio		4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount (in Dollars)		20,994
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio		5.00%
West Branch [Member]
Total Capital to Risk Weighted Assets
Actual Amount (in Dollars)		23,021
Actual Ratio		14.01%
Minimum Required For Capital Adequacy Purposes Amount (in Dollars)		13,144
Minimum Required For Capital Adequacy Purposes Ratio		8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount (in Dollars)		16,430
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio		10.00%
Tier 1 (Core) Capital to Risk Weighted Assets
Actual Amount (in Dollars)		20,945
Actual Ratio		12.75%
Minimum Required For Capital Adequacy Purposes Amount (in Dollars)		6,572
Minimum Required For Capital Adequacy Purposes Ratio		4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount (in Dollars)		9,858
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio		6.00%
Tier 1 (Core) Capital to Average Assets
Actual Amount (in Dollars)		20,945
Actual Ratio		8.55%
Minimum Required For Capital Adequacy Purposes Amount (in Dollars)		9,803
Minimum Required For Capital Adequacy Purposes Ratio		4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount (in Dollars)		12,253
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio		5.00%
West Michigan [Member]
Total Capital to Risk Weighted Assets
Actual Amount (in Dollars)		15,226
Actual Ratio		12.83%
Minimum Required For Capital Adequacy Purposes Amount (in Dollars)		9,493
Minimum Required For Capital Adequacy Purposes Ratio		8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount (in Dollars)		11,866
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio		10.00%
Tier 1 (Core) Capital to Risk Weighted Assets
Actual Amount (in Dollars)		13,729
Actual Ratio		11.57%
Minimum Required For Capital Adequacy Purposes Amount (in Dollars)		4,746
Minimum Required For Capital Adequacy Purposes Ratio		4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount (in Dollars)		7,119
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio		6.00%
Tier 1 (Core) Capital to Average Assets
Actual Amount (in Dollars)		13,729
Actual Ratio		7.29%
Minimum Required For Capital Adequacy Purposes Amount (in Dollars)		7,538
Minimum Required For Capital Adequacy Purposes Ratio		4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount (in Dollars)		$ 9,422
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio		5.00%