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Note 17 - Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2015
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | 2015 |  |  | 2014 |  |  | 2013 |
Net income |  | $ | 16,927,881 |  |  | $ | 14,952,537 |  |  | $ | 14,938,245 |
Less: Preferred stock dividends |  |  | - |  |  |  | 1,081,877 |  |  |  | 3,168,302 |
Net income attributable to QCR Holdings, Inc. common stockholders |  | $ | 16,927,881 |  |  | $ | 13,870,660 |  |  | $ | 11,769,943 |
EPS attributable to QCR Holdings, Inc. common stockholders |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 1.64 |  |  | $ | 1.75 |  |  | $ | 2.13 |
Diluted |  | $ | 1.61 |  |  | $ | 1.72 |  |  | $ | 2.08 |
Weighted average common shares outstanding* |  |  | 10,345,286 |  |  |  | 7,925,220 |  |  |  | 5,531,948 |
Weighted average common shares issuable upon exercise of stock options and under the employee stock purchase plan** |  |  | 154,555 |  |  |  | 123,441 |  |  |  | 114,978 |
Weighted average common and common equivalent shares outstanding |  |  | 10,499,841 |  |  |  | 8,048,661 |  |  |  | 5,646,926 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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