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Note 26: Summary of Unaudited Quarterly Operating Results: Schedule of Quarterly Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Net income |  |  |  |  |  |  |  |  |  |  |  |  | $ 67,109 | $ 51,564 | $ 45,342
Quarterly operating results |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest Income, Operating | $ 56,142 | $ 52,982 | $ 49,943 | $ 46,882 | $ 46,536 | $ 46,368 | $ 44,744 | $ 45,413 | $ 46,937 | $ 46,856 | $ 45,636 | $ 45,746 |  |  |
Interest Expense Operating | 11,585 | 9,997 | 8,731 | 7,444 | 7,263 | 7,087 | 6,843 | 6,712 | 6,690 | 5,828 | 4,974 | 4,627 |  |  |
Provision for Other Losses | 1,950 | 1,300 | 1,950 | 1,950 | 1,950 | 2,950 | 1,950 | 2,250 | 2,380 | 2,500 | 2,300 | 2,101 |  |  |
Net realized gain (losses) and impairment on available for sale securities operating | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | (9) | 144 | 2,735 | 3 |  |  |
Noninterest Income, Other Operating Income | 7,220 | 14,604 | 7,459 | 6,935 | 7,374 | 7,655 | 15,800 | 7,698 | 7,530 | 7,090 | 8,916 | 4,974 |  |  |
Other Noninterest Expense | 28,774 | 28,309 | 29,915 | 28,312 | 29,283 | 28,034 | 28,371 | 28,573 | 29,043 | 30,657 | 29,807 | 30,920 |  |  |
Provision for income taxes | 3,765 | 5,464 | 2,967 | 2,645 | 3,207 | 4,289 | 7,204 | 4,058 | 4,560 | 3,740 | 4,937 | 3,279 |  |  |
Net income available to common shareholders | $ 17,288 | $ 22,516 | $ 13,839 | $ 13,466 | $ 12,207 | $ 11,663 | $ 16,176 | $ 11,518 | $ 11,794 | $ 11,221 | $ 12,534 | $ 9,793 |  |  |
Earnings per share operating results diluted | $ 1.21 | $ 1.57 | $ 0.97 | $ 0.95 | $ 0.86 | $ 0.82 | $ 1.14 | $ 0.81 | $ 0.83 | $ 0.80 | $ 0.89 | $ 0.70 |  |  |
Net income |  |  |  |  | $ 12,207 | $ 11,663 | $ 16,176 | $ 11,518 | $ 11,794 | $ 11,221 | $ 12,534 | $ 9,793 |  |  |

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