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Note 2 - Community National Bancorporation and Community National Bank (Details) - Pro Forma Combined Operating Results (USD $) | 12 Months Ended
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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

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