Note 22 - Business Segment Information (Tables)

12 Months Ended

Dec. 31, 2015

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Commercial Banking
	Quad City Bank & Trust		Cedar Rapids Bank & Trust		Rockford Bank & Trust		Wealth Management		All other			Intercompany Eliminations			Consolidated Total
Twelve Months Ended December 31, 2015
Total revenue	$	52,859,118	$	37,515,641	$	14,816,300	$	9,103,173	$	663,432		$	(424,688	)	$	114,532,976
Net interest income		40,416,563		26,635,659		10,854,637		-		(1,610,135	)		-			76,296,724
Net income		10,333,111		7,695,867		2,402,522		1,627,586		(5,131,205	)		-			16,927,881
Total assets		1,336,571,694		866,872,406		367,471,639		-		27,605,704			(5,323,168	)		2,593,198,275
Provision for loan/lease losses		4,367,234		1,750,000		753,666		-		-			-			6,870,900
Goodwill		3,222,688		-		-		-		-			-			3,222,688
Core deposit intangible		-		1,471,409		-		-		-			-			1,471,409
Twelve Months Ended December 31, 2014
Total revenue	$	48,827,714	$	35,899,702	$	14,286,757	$	8,513,322	$	80,978		$	(485,860	)	$	107,122,613
Net interest income		36,539,635		24,215,815		10,261,615		-		(1,945,937	)		-			69,071,128
Net income		9,065,183		7,562,252		2,149,676		1,556,082		(5,380,656	)		-			14,952,537
Total assets		1,320,684,456		840,331,777		353,448,134		-		17,727,123			(7,233,390	)		2,524,958,100
Provision for loan/lease losses		3,800,667		1,855,333		1,151,000		-		-			-			6,807,000
Goodwill		3,222,688		-		-		-		-			-			3,222,688
Core deposit intangible		-		1,670,921		-		-		-			-			1,670,921
Twelve Months Ended December 31, 2013
Total revenue	$	49,701,389	$	35,946,233	$	13,732,076	$	7,521,821	$	1,924,329		$	(108,214	)	$	108,717,634
Net interest income		33,892,035		22,239,329		9,645,411		-		(1,671,338	)		-			64,105,437
Net income		9,310,779		7,953,230		1,855,672		1,379,402		(5,560,838	)		-			14,938,245
Total assets		1,245,128,136		804,223,453		339,375,139		-		22,394,401			(16,168,205	)		2,394,952,924
Provision for loan/lease losses		3,391,406		1,531,014		1,008,000		-		-			-			5,930,420
Goodwill		3,222,688		-		-		-		-			-			3,222,688
Core deposit intangible		-		1,870,433		-		-		-			-			1,870,433