Note 16 - Regulatory Capital Requirements and Restrictions on Dividends (Tables)

12 Months Ended

Dec. 31, 2015

Disclosure Text Block [Abstract]

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]

	Actual					For Capital Adequacy Purposes*					To Be Well Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio			Amount		Ratio			Amount		Ratio
As of December 31, 2015:
Company:
Total risk-based capital	$	280,273		13.11	%	$	170,969	>	8.0	%	$	213,711	>	10.0	%
Tier 1 risk-based capital		253,891		11.88	%		128,227	>	6.0			170,969	>	8.0
Tier 1 leverage		253,891		9.75	%		104,163	>	4.0			130,203	>	5.0
Common equity Tier 1		220,800		10.33	%		96,170	>	4.5			138,912	>	6.5
Quad City Bank & Trust:
Total risk-based capital	$	135,477		12.50	%	$	86,726	>	8.0	%	$	108,407	>	10.0	%
Tier 1 risk-based capital		123,498		11.39	%		65,044	>	6.0			86,726	>	8.0
Tier 1 leverage		123,498		8.87	%		55,718	>	4.0			69,648	>	5.0
Common equity Tier 1		123,498		11.39	%		48,783	>	4.5			70,465	>	6.5
Cedar Rapids Bank & Trust:
Total risk-based capital	$	105,285		14.39	%	$	58,537	>	8.0	%	$	73,172	>	10.0	%
Tier 1 risk-based capital		96,118		13.14	%		43,903	>	6.0			58,537	>	8.0
Tier 1 leverage		96,118		10.96	%		35,079	>	4.0			43,848	>	5.0
Common equity Tier 1		96,118		13.14	%		32,927	>	4.5			47,562	>	6.5
Rockford Bank & Trust:
Total risk-based capital	$	38,544		11.96	%	$	25,772	>	8.0	%	$	32,216	>	10.0	%
Tier 1 risk-based capital		34,514		10.71	%		19,329	>	6.0			25,772	>	8.0
Tier 1 leverage		34,514		9.59	%		14,401	>	4.0			18,001	>	5.0
Common equity Tier 1		34,514		10.71	%		14,497	>	4.5			20,940	>	6.5

	Actual					For Capital Adequacy Purposes					To Be Well Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio			Amount		Ratio			Amount		Ratio
As of December 31, 2014:
Company:
Total risk-based capital	$	204,376		10.91	%	$	149,876	>	8.0	%		N/A		N/A
Tier 1 risk-based capital		178,364		9.52	%		74,938	>	4.0			N/A		N/A
Tier 1 leverage		178,364		7.62	%		93,658	>	4.0			N/A		N/A
Quad City Bank & Trust:
Total risk-based capital	$	104,869		11.26	%	$	74,495	>	8.0	%	$	93,119	>	10.0	%
Tier 1 risk-based capital		93,785		10.07	%		37,248	>	4.0			55,872	>	6.0
Tier 1 leverage		93,785		7.10	%		52,817	>	4.0			66,021	>	5.0
Cedar Rapids Bank & Trust:
Total risk-based capital	$	76,662		11.54	%	$	53,126	>	8.0	%	$	66,407	>	10.0	%
Tier 1 risk-based capital		68,772		10.36	%		26,563	>	4.0			39,844	>	6.0
Tier 1 leverage		68,772		8.21	%		33,525	>	4.0			41,906	>	5.0
Rockford Bank & Trust:
Total risk-based capital	$	35,906		12.56	%	$	22,875	>	8.0	%	$	28,594	>	10.0	%
Tier 1 risk-based capital		32,325		11.30	%		11,438	>	4.0			17,156	>	6.0
Tier 1 leverage		32,325		9.16	%		14,112	>	4.0			17,640	>	5.0