Note 8 - Regulatory Capital Requirements (Tables)

3 Months Ended

Mar. 31, 2016

Disclosure Text Block [Abstract]

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

						For Capital						To Be Well
						Adequacy Purposes						Capitalized Under
						With Capital						Prompt Corrective
	Actual					Conservation Buffer*						Action Provisions
	Amount		Ratio			Amount			Ratio			Amount			Ratio
As of March 31, 2016:
Company:
Total risk-based capital	$	282,957		12.68	%	$	192,416	>		8.625	%	$	223,091	>		10.0	%
Tier 1 risk-based capital		255,372		11.45	%		147,797	>		6.625			178,472	>		8.0
Tier 1 leverage		255,372		9.85	%		103,728	>		4.000			129,660	>		5.0
Common equity Tier 1		225,582		10.11	%		114,334	>		5.125			145,009	>		6.5
Quad City Bank & Trust:
Total risk-based capital	$	137,161		12.01	%	$	98,496	>		8.625	%	$	114,198	>		10.0	%
Tier 1 risk-based capital		124,668		10.92	%		75,656	>		6.625			91,358	>		8.0
Tier 1 leverage		124,668		9.12	%		54,680	>		4.000			68,351	>		5.0
Common equity Tier 1		124,668		10.92	%		58,526	>		5.125			74,229	>		6.5
Cedar Rapids Bank & Trust:
Total risk-based capital	$	106,576		13.98	%	$	65,729	>		8.625	%	$	76,208	>		10.0	%
Tier 1 risk-based capital		97,032		12.73	%		50,488	>		6.625			60,966	>		8.0
Tier 1 leverage		97,032		11.03	%		35,197	>		4.000			43,996	>		5.0
Common equity Tier 1		97,032		12.73	%		39,056	>		5.125			49,535	>		6.5
Rockford Bank & Trust:
Total risk-based capital	$	39,201		12.03	%	$	28,096	>		8.625	%	$	32,575	>		10.0	%
Tier 1 risk-based capital		35,125		10.78	%		21,581	>		6.625			26,060	>		8.0
Tier 1 leverage		35,125		9.52	%		14,758	>		4.000			18,447	>		5.0
Common equity Tier 1		35,125		10.78	%		16,695	>		5.125			21,174	>		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, 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