Note 15 - Regulatory Capital Requirements and Restrictions on Dividends (Details) - Capital Requirements (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Company [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total risk-based capital (in Dollars)	$ 217,011	$ 188,841
Total risk-based capital ratio	12.87%	12.71%
Total risk-based capital required for capital adequacy purposes (in Dollars)	134,935	118,878
Total risk-based capital required for capital adequacy purposes ratio	8.00%	8.00%
Tier 1 risk-based capital (in Dollars)	193,044	167,475
Tier 1 risk-based capital ratio	11.45%	11.27%
Tier 1 risk-based capital required for capital adequacy purposes (in Dollars)	67,468	59,439
Tier 1 risk-based capital required for capital adequacy purposes ratio	4.00%	4.00%
Tier 1 leverage (in Dollars)	193,044	167,475
Tier 1 leverage ratio	7.96%	8.13%
Tier 1 leverage required for capital adequacy purposes (in Dollars)	97,029	82,357
Tier 1 leverage required for capital adequacy purposes ratio	4.00%	4.00%
Quad City Bank and Trust [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total risk-based capital (in Dollars)	101,168	98,789
Total risk-based capital ratio	12.25%	12.12%
Total risk-based capital required for capital adequacy purposes (in Dollars)	66,049	65,218
Total risk-based capital required for capital adequacy purposes ratio	8.00%	8.00%
Total risk-based capital required to be well capitalized under prompt corrective action provisions (in Dollars)	82,562	81,522
Total risk-based capital required to be well capitalized under prompt corrective action provisions ratio	10.00%	10.00%
Tier 1 risk-based capital (in Dollars)	91,820	90,533
Tier 1 risk-based capital ratio	11.12%	11.11%
Tier 1 risk-based capital required for capital adequacy purposes (in Dollars)	33,025	32,609
Tier 1 risk-based capital required for capital adequacy purposes ratio	4.00%	4.00%
Tier 1 risk-based capital required to be well capitalized under prompt corrective action provisions (in Dollars)	49,537	48,913
Tier 1 risk-based capital required to be well capitalized under prompt corrective action provisions ratio	6.00%	6.00%
Tier 1 leverage (in Dollars)	91,820	90,533
Tier 1 leverage ratio	7.13%	7.74%
Tier 1 leverage required for capital adequacy purposes (in Dollars)	51,527	46,784
Tier 1 leverage required for capital adequacy purposes ratio	4.00%	4.00%
Tier 1 leverage to be well capitalized under prompt corrective action provisions (in Dollars)	64,408	58,480
Tier 1 leverage required to be well capitalized under prompt corrective action provisions ratio	5.00%	5.00%
Cedar Rapids Bank and Trust [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total risk-based capital (in Dollars)	74,912	55,736
Total risk-based capital ratio	12.54%	12.87%
Total risk-based capital required for capital adequacy purposes (in Dollars)	47,808	34,652
Total risk-based capital required for capital adequacy purposes ratio	8.00%	8.00%
Total risk-based capital required to be well capitalized under prompt corrective action provisions (in Dollars)	59,760	43,315
Total risk-based capital required to be well capitalized under prompt corrective action provisions ratio	10.00%	10.00%
Tier 1 risk-based capital (in Dollars)	67,432	50,297
Tier 1 risk-based capital ratio	11.28%	11.61%
Tier 1 risk-based capital required for capital adequacy purposes (in Dollars)	23,904	17,326
Tier 1 risk-based capital required for capital adequacy purposes ratio	4.00%	4.00%
Tier 1 risk-based capital required to be well capitalized under prompt corrective action provisions (in Dollars)	35,856	25,989
Tier 1 risk-based capital required to be well capitalized under prompt corrective action provisions ratio	6.00%	6.00%
Tier 1 leverage (in Dollars)	67,432	50,297
Tier 1 leverage ratio	8.78%	8.49%
Tier 1 leverage required for capital adequacy purposes (in Dollars)	30,736	23,685
Tier 1 leverage required for capital adequacy purposes ratio	4.00%	4.00%
Tier 1 leverage to be well capitalized under prompt corrective action provisions (in Dollars)	38,420	29,606
Tier 1 leverage required to be well capitalized under prompt corrective action provisions ratio	5.00%	5.00%
Rockford Bank and Trust [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total risk-based capital (in Dollars)	38,778	36,894
Total risk-based capital ratio	14.59%	15.33%
Total risk-based capital required for capital adequacy purposes (in Dollars)	21,263	19,255
Total risk-based capital required for capital adequacy purposes ratio	8.00%	8.00%
Total risk-based capital required to be well capitalized under prompt corrective action provisions (in Dollars)	26,579	24,609
Total risk-based capital required to be well capitalized under prompt corrective action provisions ratio	10.00%	10.00%
Tier 1 risk-based capital (in Dollars)	35,449	33,870
Tier 1 risk-based capital ratio	13.34%	14.07%
Tier 1 risk-based capital required for capital adequacy purposes (in Dollars)	10,631	9,628
Tier 1 risk-based capital required for capital adequacy purposes ratio	4.00%	4.00%
Tier 1 risk-based capital required to be well capitalized under prompt corrective action provisions (in Dollars)	15,947	14,441
Tier 1 risk-based capital required to be well capitalized under prompt corrective action provisions ratio	6.00%	6.00%
Tier 1 leverage (in Dollars)	35,449	33,870
Tier 1 leverage ratio	10.54%	11.13%
Tier 1 leverage required for capital adequacy purposes (in Dollars)	13,459	12,177
Tier 1 leverage required for capital adequacy purposes ratio	4.00%	4.00%
Tier 1 leverage to be well capitalized under prompt corrective action provisions (in Dollars)	$ 16,824	$ 15,221
Tier 1 leverage required to be well capitalized under prompt corrective action provisions ratio	5.00%	5.00%