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Summary Of Quarterly Financial Information (Unaudited) | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract] |
Summary of Quarterly Financial Information (Unaudited) | Summary of Quarterly Financial Information (Unaudited) Quarterly financial information for the years ended December 31, 2018 and 2017 is summarized as follows:
|  | Fourth Quarter (1) |  | Third Quarter (2) |  | Second Quarter |  | First Quarter |  | Year Ended December 31,
|  | (in thousands, except per share amounts) |  |
2018 |  |  |  |  |  |  |  |  |  |
Total interest income |  | $ | 129,801 |  |  | $ | 127,575 |  |  | $ | 120,549 |  |  | $ | 119,144 |  |  | $ | 497,069 |
Total interest expense |  | 5,913 |  |  | 4,779 |  |  | 3,875 |  |  | 3,663 |  |  | 18,230 |
Net interest income |  | 123,888 |  |  | 122,796 |  |  | 116,674 |  |  | 115,481 |  |  | 478,839 |
Provision for loan and lease losses |  | 1,789 |  |  | 3,153 |  |  | 3,975 |  |  | 5,852 |  |  | 14,769 |
Noninterest income |  | 20,402 |  |  | 21,019 |  |  | 23,692 |  |  | 23,143 |  |  | 88,256 |
Noninterest expense |  | 87,019 |  |  | 82,841 |  |  | 84,643 |  |  | 85,987 |  |  | 340,490 |
Income before income taxes |  | 55,482 |  |  | 57,821 |  |  | 51,748 |  |  | 46,785 |  |  | 211,836 |
Provision for income taxes |  | 10,734 |  |  | 11,406 |  |  | 9,999 |  |  | 6,815 |  |  | 38,954 |
Net income |  | $ | 44,748 |  |  | $ | 46,415 |  |  | $ | 41,749 |  |  | $ | 39,970 |  |  | $ | 172,882 |
Per common share (3) |  |  |  |  |  |  |  |  |  |
Earnings (basic) |  | $ | 0.61 |  |  | $ | 0.63 |  |  | $ | 0.57 |  |  | $ | 0.55 |  |  | $ | 2.36 |
Earnings (diluted) |  | $ | 0.61 |  |  | $ | 0.63 |  |  | $ | 0.57 |  |  | $ | 0.55 |  |  | $ | 2.36 |
2017 |  |  |  |  |  |  |  |  |  |
Total interest income |  | $ | 108,841 |  |  | $ | 90,303 |  |  | $ | 87,786 |  |  | $ | 87,816 |  |  | $ | 374,746 |
Total interest expense |  | 2,617 |  |  | 1,374 |  |  | 1,625 |  |  | 1,141 |  |  | 6,757 |
Net interest income |  | 106,224 |  |  | 88,929 |  |  | 86,161 |  |  | 86,675 |  |  | 367,989 |
Provision (recapture) for loan and lease losses |  | 3,327 |  |  | (648 | ) |  | 3,177 |  |  | 2,775 |  |  | 8,631 |
Noninterest income |  | 23,581 |  |  | 37,067 |  |  | 24,135 |  |  | 24,859 |  |  | 109,642 |
Noninterest expense |  | 85,627 |  |  | 67,537 |  |  | 68,867 |  |  | 68,986 |  |  | 291,017 |
Income before income taxes |  | 40,851 |  |  | 59,107 |  |  | 38,252 |  |  | 39,773 |  |  | 177,983 |
Provision for income taxes |  | 25,123 |  |  | 18,338 |  |  | 11,120 |  |  | 10,574 |  |  | 65,155 |
Net income |  | $ | 15,728 |  |  | $ | 40,769 |  |  | $ | 27,132 |  |  | $ | 29,199 |  |  | $ | 112,828 |
Per common share (3) |  |  |  |  |  |  |  |  |  |
Earnings (basic) |  | $ | 0.23 |  |  | $ | 0.70 |  |  | $ | 0.47 |  |  | $ | 0.50 |  |  | $ | 1.86 |
Earnings (diluted) |  | $ | 0.23 |  |  | $ | 0.70 |  |  | $ | 0.47 |  |  | $ | 0.50 |  |  | $ | 1.86 |
__________ (1) During the fourth quarter of 2017, Columbia acquired Pacific Continental and also recorded a charge through provision for income taxes related to the re-measurement of our deferred tax assets pursuant to the newly enacted Tax Cuts and Jobs Act. See Note 2, “Business Combinations,” for further information regarding this acquisition. See Note 23, “Income Tax,” for further information regarding the re-measurement of our deferred tax assets. (2) During the third quarter of 2017, Columbia sold its merchant card services portfolio. (3) Due to averaging of shares, quarterly earnings per share may not add up to the totals reported for the full year.

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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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