Note 2 - Community National Bancorporation and Community National Bank (Details) - Pro Forma Combined Operating Results (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Pro Forma Combined Operating Results [Abstract]
Interest income	$ 83,008,255	$ 87,514,410
Noninterest income	22,042,194	19,792,383
Net income	11,320,890	14,077,018
Net income attributable to QCR Holdings, Inc. common stockholders	$ 8,152,588	$ 10,092,460
Earnings per common share attributable to QCR Holdings, Inc. common stockholders
Basic (in Dollars per share)	$ 1.47	$ 1.82
Diluted (in Dollars per share)	$ 1.44	$ 1.79