Note 25 - Subsequent Event - Junior Subordinated Debentures Retirement and Balance Sheet Restructuring	12 Months Ended
Dec. 31, 2015
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Note 25. Subsequent Event - Junior Subordinated Debentures Retirement and Balance Sheet Restructuring In January 2016, the Company extinguished $5.1 million of the QCR Holdings Capital Trust IV junior subordinated debentures (the full balance outstanding) and recorded a $1.2 million gain on extinguishment (pre-tax), as the Company was able to acquire the related security at a discount through auction. This gain will be included in the statements of income for the first quarter of 2016. The interest rate on these debentures floated at 3-month LIBOR plus 1.80% and had a rate of 2.42% at the time of extinguishment. QCR Holdings Capital Trust IV was dissolved after the extinguishment. Also in January 2016, the Company executed balance sheet restructuring strategies at QCBT and CRBT, which included the repayment of $10.0 million of wholesale structured repurchase agreements and $10.0 million of FHLB advances with a combined weighted average interest rate of 3.92%. As a result of this restructuring, the Company incurred $1.3 million (pre-tax) in losses on debt extinguishment that will be included in the statements of income for the first quarter of 2016. The weighted average duration of this combined debt was 2.17 years, with $10.0 million maturing in 2017 and $10.0 maturing in 2018. This funding was replaced with short-term borrowings at an average interest rate of 0.50%.

Note 25 - Subsequent Event - Junior Subordinated Debentures Retirement and Balance Sheet Restructuring

12 Months Ended

Dec. 31, 2015

Note 25. Subsequent Event - Junior Subordinated Debentures Retirement and Balance Sheet Restructuring

In January 2016, the Company extinguished $5.1 million of the QCR Holdings Capital Trust IV junior subordinated debentures (the full balance outstanding) and recorded a $1.2 million gain on extinguishment (pre-tax), as the Company was able to acquire the related security at a discount through auction. This gain will be included in the statements of income for the first quarter of 2016. The interest rate on these debentures floated at 3-month LIBOR plus 1.80% and had a rate of 2.42% at the time of extinguishment. QCR Holdings Capital Trust IV was dissolved after the extinguishment.

Also in January 2016, the Company executed balance sheet restructuring strategies at QCBT and CRBT, which included the repayment of $10.0 million of wholesale structured repurchase agreements and $10.0 million of FHLB advances with a combined weighted average interest rate of 3.92%. As a result of this restructuring, the Company incurred $1.3 million (pre-tax) in losses on debt extinguishment that will be included in the statements of income for the first quarter of 2016. The weighted average duration of this combined debt was 2.17 years, with $10.0 million maturing in 2017 and $10.0 maturing in 2018. This funding was replaced with short-term borrowings at an average interest rate of 0.50%.