Revenue Recognition	3 Months Ended
Mar. 31, 2018
Revenue Recognition [Abstract]
Revenue Recognition	2.Revenue Recognition Effective January 1, 2018, the Company adopted ASU 2014-09 Revenue from Contracts with Customers – Topic 606 and all subsequent ASCs that modified ASC 606. The Company has elected to apply the standard utilizing the modified retrospective approach with a cumulative effect of adoption for the impact from uncompleted contracts as the date of adoption. The implementation of the new standard had no material impact to the measurement or recognition of revenue of prior periods. Management determined that the primary sources of revenue emanating from interest income on loans and investments along with noninterest revenue resulting from investment security gains, loan servicing, gains on the sale of loans, commitment fees, and fees from financial guarantees are not within the scope of ASC 606. As a result, no changes were made during the period related to these sources of revenue, which cumulatively comprise 94.2% percent of the total revenue of the Company. The main types of noninterest income within the scope of the standard are as follows: Service charges on deposit accounts – The Company has contracts with its deposit customers where fees are charged if the account balance falls below predetermined levels defined as compensating balances. The agreements can be cancelled at any time by either the Company or the deposit customer. Revenue from the transactions is recognized on a monthly basis as the Company has an unconditional right to the fee consideration. The Company also has transaction fees related to specific transactions or activities resulting from a customer request or activity that include overdraft fees, online banking fees, and other transaction fees. All of these fees are attributable to specific performance obligations of the Company where the revenue is recognized at a defined point in time or at the completion of the requested service/transaction. Fiduciary/trust fees – Typical contracts for trust services are based on a fixed percentage of assets earned ratably over a defined period and billed on a monthly or quarterly basis. Fees charged to customers’ accounts are recognized as revenue over the period during which the Company fulfills its performance obligation under the contract (i.e. holding client assets in a managed fiduciary trust account). For these accounts, the performance obligation of the Company is typically satisfied by holding and managing the customer’s assets over time. Other fees related to specific customer requests are attributable to specific performance obligations of the Company where the revenue is recognized at a defined point in time or at the completion of the requested service/transaction. The Company has evaluated the nature of its contracts with customers and determined that further disaggregation of revenue from contracts with customers into more granular categories beyond what is presented in the Consolidated Statements of Income was not necessary. The Company generally fully satisfies its performance obligations on its contracts with customers as services are rendered and the transaction prices are typically fixed; charged either on a periodic basis or based on activity.

2.Revenue Recognition

Effective January 1, 2018, the Company adopted ASU 2014-09 Revenue from Contracts with Customers – Topic 606 and all subsequent ASCs that modified ASC 606. The Company has elected to apply the standard utilizing the modified retrospective approach with a cumulative effect of adoption for the impact from uncompleted contracts as the date of adoption. The implementation of the new standard had no material impact to the measurement or recognition of revenue of prior periods.

Management determined that the primary sources of revenue emanating from interest income on loans and investments along with noninterest revenue resulting from investment security gains, loan servicing, gains on the sale of loans, commitment fees, and fees from financial guarantees are not within the scope of ASC 606. As a result, no changes were made during the period related to these sources of revenue, which cumulatively comprise 94.2% percent of the total revenue of the Company.

The main types of noninterest income within the scope of the standard are as follows:

Service charges on deposit accounts – The Company has contracts with its deposit customers where fees are charged if the account balance falls below predetermined levels defined as compensating balances. The agreements can be cancelled at any time by either the Company or the deposit customer. Revenue from the transactions is recognized on a monthly basis as the Company has an unconditional right to the fee consideration. The Company also has transaction fees related to specific transactions or activities resulting from a customer request or activity that include overdraft fees, online banking fees, and other transaction fees. All of these fees are attributable to specific performance obligations of the Company where the revenue is recognized at a defined point in time or at the completion of the requested service/transaction.

Fiduciary/trust fees – Typical contracts for trust services are based on a fixed percentage of assets earned ratably over a defined period and billed on a monthly or quarterly basis. Fees charged to customers’ accounts are recognized as revenue over the period during which the Company fulfills its performance obligation under the contract (i.e. holding client assets in a managed fiduciary trust account). For these accounts, the performance obligation of the Company is typically satisfied by holding and managing the customer’s assets over time. Other fees related to specific customer requests are attributable to specific performance obligations of the Company where the revenue is recognized at a defined point in time or at the completion of the requested service/transaction.

The Company has evaluated the nature of its contracts with customers and determined that further disaggregation of revenue from contracts with customers into more granular categories beyond what is presented in the Consolidated Statements of Income was not necessary. The Company generally fully satisfies its performance obligations on its contracts with customers as services are rendered and the transaction prices are typically fixed; charged either on a periodic basis or based on activity.