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Consolidated Statements of Comprehensive Income (Unaudited) (USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Net income $ 3,265,144 $ 3,402,849
Unrealized gains (losses) on securities available for sale:    
Unrealized holding losses arising during the period before tax (1,356,552) (2,460,571)
(1,356,552) (2,460,571)
Tax benefit (520,194) (943,336)
Other comprehensive loss, net of tax (836,358) (1,517,235)
Comprehensive income attributable to QCR Holdings, Inc. $ 2,428,786 $ 1,885,614