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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2019
Summary of Significant Accounting Policies [Abstract] |
Noninterest Income, Segregated by Revenue Streams in-Scope and Out-of-Scope of ASC 606 | The following table presents noninterest income, segregated by revenue streams in-scope and out-of-scope of ASC 606:
|  | Years ended December 31, |
(In thousands) |  | 2019 |  |  | 2018 |  |  | 2017 |
Noninterest income |  |  |  |  |  |  |  |  |
In-Scope of ASC 606: |  |  |  |  |  |  |  |  |
Insurance and other financial services revenue |  | $ | 25,006 |  |  | $ | 24,345 |  |  | $ | 23,532 |
Service charges on deposit accounts |  |  | 17,151 |  |  |  | 17,224 |  |  |  | 16,750 |
ATM and debit card fees |  |  | 23,893 |  |  |  | 22,699 |  |  |  | 21,372 |
Retirement plan administration fees |  |  | 30,388 |  |  |  | 26,992 |  |  |  | 20,213 |
Trust |  |  | 19,164 |  |  |  | 19,524 |  |  |  | 19,586 |
Other |  |  | 18,853 |  |  |  | 15,228 |  |  |  | 11,991 |
Total noninterest income in-scope of ASC 606 |  | $ | 134,455 |  |  | $ | 126,012 |  |  | $ | 113,444 |
Total noninterest income out-of-scope of ASC 606 |  | $ | 9,568 |  |  | $ | (1,250 | ) |  | $ | 7,860 |
Total noninterest income |  | $ | 144,023 |  |  | $ | 124,762 |  |  | $ | 121,304 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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