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Revenue (Notes) | 12 Months Ended
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Dec. 31, 2020
Revenue from Contract with Customer [Abstract] |
Revenue from Contract with Customer [Text Block] | Revenue Our revenue is comprised primarily of interest income, service charges and fees, gains on the sale of loans and AFS securities, earnings on corporate owned life insurance policies, and other noninterest income. Other noninterest income is typically service and performance driven in nature and comprised primarily of investment and trust advisory fees. We recognize revenue, excluding interest income, in accordance with ASC 606, Revenue From Contracts with Customers. Revenue is recognized when our performance obligation has been satisfied according to our contractual obligation. We record receivables when revenue is unpaid and collectability is reasonably assured. Accounts receivable balances primarily represent amounts due from customers for which revenue has been recognized. Accounts receivable balances are recorded in the consolidated balance sheets in accrued interest receivable and other assets. For the years ended December 31, 2020, 2019 and 2018, we satisfied our performance obligations pursuant to contracts with customers. As a result, we have not recorded any contract assets or liabilities. We estimate no returns or allowances for the years ended December 31, 2020, 2019 and 2018. Our contracts with customers define our performance obligations with clearly established pricing which did not require us to allocate or disaggregate revenue by performance obligation. A summary of revenue recognized for each major category of contracts with customers, subject to ASC 606, is as follows for the years ended December 31:
| 2020 |  | 2019 |  | 2018
Debit card income | $ | 2,961 |  |  | $ | 2,667 |  |  | $ | 2,487 |
Trust service fees | 2,294 |  |  | 2,269 |  |  | 2,134 |
Investment advisory fees | 284 |  |  | 523 |  |  | 702 |
Service charges and fees related to deposit accounts | 290 |  |  | 317 |  |  | 332 |
A significant portion of our revenue consists of interest income which is not subject to the requirements set forth in ASC 606.
Disaggregation of Revenue [Table Text Block] | A summary of revenue recognized for each major category of contracts with customers, subject to ASC 606, is as follows for the years ended December 31:
| 2020 |  | 2019 |  | 2018
Debit card income | $ | 2,961 |  |  | $ | 2,667 |  |  | $ | 2,487 |
Trust service fees | 2,294 |  |  | 2,269 |  |  | 2,134 |
Investment advisory fees | 284 |  |  | 523 |  |  | 702 |
Service charges and fees related to deposit accounts | 290 |  |  | 317 |  |  | 332 |

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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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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -URI http://asc.fasb.org/topic&trid=49130388 + Details
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