Recent Accounting Pronouncements (Policies)	6 Months Ended
Jun. 30, 2018
Accounting Policies [Abstract]
Adopted Pronouncements and Pronouncements Not Yet Effective	Adopted Pronouncements: FASB ASU 2014-9 (Topic 606), “Revenue from Contracts with Customers” The Corporation adopted ASU 2014-9 Revenue from Contracts with Customers and all subsequent amendments to the ASU (collectively, “ASC 606”), which (i) creates a single framework for recognizing revenue from contracts with customers that fall within its scope and (ii) revises when it is appropriate to recognize a gain (loss) from the transfer of nonfinancial assets, such as OREO. The majority of the Corporation’s revenues come from interest income and other sources, including loans, leases, investment securities and derivatives, that are outside the scope of ASC 606. The Corporation’s services that fall within the scope of ASC 606 are presented within noninterest income and are recognized as revenue as the Corporation satisfies its obligation to the customer. Services within the scope of ASC 606 include service charges on deposits, interchange income, wealth management fees, investment brokerage fees, and the net gain on sale of OREO. Refer to Note 17 Revenue from Contracts with Customers for further discussion on the Corporation’s accounting policies for revenue sources within the scope of ASC 606. The adoption of this ASU did not have an impact to our Consolidated Financial Statements. FASB ASU 2017-1 (Topic 805), “Business Combinations” The Corporation adopted ASU 2017-1, which clarifies the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The definition of a business affects many areas of accounting including acquisitions, disposals, goodwill, and consolidation. The adoption of this ASU did not have a material impact on our Consolidated Financial Statements and related disclosures. FASB ASU 2016-15 (Topic 320), “Classification of Certain Cash Receipts and Cash Payments” The Corporation adopted ASU 2016-15, which provides guidance on eight specific cash flow issues and their disclosure in the consolidated statements of cash flows. The issues addressed include debt prepayment, settlement of zero-coupon debt, contingent consideration in business combinations, proceeds from settlement of insurance claims, proceeds from settlement of BOLI, distributions received from equity method investees, beneficial interests in securitization transactions, and separately identifiable cash flows and application of the predominance principle. The adoption of this ASU did not have a material impact on our Consolidated Financial Statements and related disclosures. FASB ASU 2016-1 (Subtopic 825-10), “Financial Instruments – Overall, Recognition and Measurement of Financial Assets and Financial Liabilities” The Corporation adopted ASU 2016-1 which requires that equity investments be measured at fair value with changes in fair value recognized in net income. The Corporation’s equity investments with a readily determinable fair value are currently included within trading securities and are measured at fair value with changes in fair value recognized in net income. In connection with the adoption of this ASU, the Corporation elected the practicability exception to fair value measurement for investments in equity securities without a readily determinable fair value (other than our Federal Home Loan Bank (“FHLB”), Federal Reserve Bank ("FRB"), and Atlantic Central Bankers Bank stock, which are outside of the scope of this ASU). Under the practicability exception, the investments are measured at cost, less impairment, plus or minus observable price changes (in orderly transactions) of an identical or similar investment of the same issuer. The adoption of this ASU did not have a material impact on our Consolidated Financial Statements. FASB ASU 2017-7 – Compensation – Retirement Benefits (Topic 715): “Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost” On January 1, 2018, the Corporation adopted ASU 2017-7 and all subsequent amendments to the ASU, which requires that an employer report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the income statement separately from the service cost component and outside a subtotal of income from operations, if one is presented. If a separate line item or items are used to present the other components of net benefit cost, that line item or items must be appropriately described. If a separate line item or items are not used, the line item or items used in the income statement to present the other components of net benefit cost must be disclosed. The amendments in this update also allow only the service cost component to be eligible for capitalization when applicable (for example, as a cost of internally manufactured inventory or a self-constructed asset). Upon adoption, the components of net periodic benefit cost other than the service cost component were reclassified retrospectively from “Employee benefits” to “Other operating expenses” in the Consolidated Statements of Income. Since both “Employee benefits” and “Other operating expenses” line items of these income statement line items are within “Noninterest expenses”, there was no impact to total “Noninterest expenses” or “Net income.” The components of net periodic benefit cost are currently disclosed in Note 17 – “Pension and Postretirement Benefit Plans” in the Notes to Consolidated Financial Statements found in our 2017 Annual Report. Additionally, the Corporation does not currently capitalize any components of its net periodic benefit costs. The adoption of this ASU did not have a material impact on our Consolidated Financial Statements and related disclosures. Pronouncements Not Yet Effective: FASB ASU 2018-07: Compensation - Stock Compensation (Topic 718), “Improvements to Nonemployee Share-Based Payment Accounting” Issued in June 2018, the FASB issued ASU 2018-07: Compensation - Stock Compensation (Topic 718), “Improvements to Nonemployee Share-Based Payment Accounting.” The amendments in this update expand the scope of Topic 718 to include share-based payment transactions for acquiring goods and services from nonemployees. An entity should apply the requirements of Topic 718 to nonemployee awards except for specific guidance on inputs to an option pricing model and the attribution of cost (that is, the period of time over which share-based payment awards vest and the pattern of cost recognition over that period). The amendments specify that Topic 718 applies to all share-based payment transactions in which a grantor acquires goods or services to be used or consumed in a grantor’s own operations by issuing share-based payment awards. The amendments also clarify that Topic 718 does not apply to share-based payments used to effectively provide (1) financing to the issuer or (2) awards granted in conjunction with selling goods or services to customers as part of a contract accounted for under Topic 606, Revenue from Contracts with Customers. The amendments in this update are effective for public business entities for fiscal years beginning after December 15, 2018, including interim periods within that fiscal year. The Corporation has not historically granted share based payment awards to nonemployees other than to the Corporation’s Board of Directors, who are treated as employees for share-based payment accounting. As a result, Management does not expect the adoption of this ASU to have an impact on our Consolidated Financial Statements and related disclosures. FASB ASU 2017-4 (Topic 350), “Intangibles – Goodwill and Others” Issued in January 2017, ASU 2017-4 simplifies how an entity is required to test goodwill for impairment by eliminating Step 2 from the goodwill impairment test. Step 2 measures a goodwill impairment loss by comparing the implied fair value of a reporting unit’s goodwill with the carrying amount of that goodwill. ASU 2017-4 is effective for annual periods beginning after December 15, 2019 including interim periods within those periods. Management does not expect the adoption of this ASU to have a material impact on our Consolidated Financial Statements and related disclosures. FASB ASU 2016-13 (Topic 326), “Measurement of Credit Losses on Financial Instruments” Issued in June 2016, ASU 2016-13 significantly changes how companies measure and recognize credit impairment for many financial assets. The new current expected credit loss (“CECL”) model will require companies to immediately recognize an estimate of credit losses expected to occur over the remaining life of the financial assets that are in the scope of the standard. The ASU also makes targeted amendments to the current impairment model for available-for-sale debt securities. ASU 2016-13 is effective for the annual and interim periods in fiscal years beginning after December 15, 2019, with early adoption permitted. Adoption of this new guidance can be applied only on a prospective basis as a cumulative-effect adjustment to retained earnings. It is expected that the new model will include different assumptions used in calculating credit losses, such as estimating losses over the estimated life of a financial asset, and will consider expected future changes in macroeconomic conditions. The adoption of this ASU may result in an increase to the Corporation’s allowance for credit losses, which will depend upon the nature and characteristics of the Corporation 's portfolio at the adoption date, as well as the macroeconomic conditions and forecasts at the adoption date. The Corporation has engaged the services of a third-party consultant as well as invested in software designed to assist management in the development and implementation of the new CECL model. Management is currently in the process of validating historical data uploaded within the third-party software. The adoption of this ASU will also require the addition of an allowance for held-to-maturity debt securities. The Corporation currently does not intend to early adopt this new guidance. FASB ASU 2016-2 (Topic 842), “Leases” Issued in February 2016, ASU 2016-2 revises the accounting related to lessee accounting. Under the new guidance, lessees will be required to recognize a lease liability and a right-of-use asset for all leases. The new lease guidance also simplifies the accounting for sale and leaseback transactions primarily because lessees must recognize lease assets and lease liabilities. ASU 2016-2 is effective for the first interim period within annual periods beginning after December 15, 2018, with early adoption permitted. The standard is required to be adopted using the modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. Management is in-process of refining and reviewing the key assumptions needed to finalize the calculation of the lease liability and a right-of-use asset for all existing leases of the Corporation. Management is aware that the adoption of this ASU will impact the Corporation’s balance sheet for the recording of assets and liabilities for operating leases. Any additional assets recorded as a result of implementation will have a negative impact on the Corporation and Bank capital ratios under current regulatory guidance.

Adopted Pronouncements:

FASB ASU 2014-9 (Topic 606), “Revenue from Contracts with Customers”

The Corporation adopted ASU 2014-9 Revenue from Contracts with Customers and all subsequent amendments to the ASU (collectively, “ASC 606”), which (i) creates a single framework for recognizing revenue from contracts with customers that fall within its scope and (ii) revises when it is appropriate to recognize a gain (loss) from the transfer of nonfinancial assets, such as OREO. The majority of the Corporation’s revenues come from interest income and other sources, including loans, leases, investment securities and derivatives, that are outside the scope of ASC 606. The Corporation’s services that fall within the scope of ASC 606 are presented within noninterest income and are recognized as revenue as the Corporation satisfies its obligation to the customer. Services within the scope of ASC 606 include service charges on deposits, interchange income, wealth management fees, investment brokerage fees, and the net gain on sale of OREO. Refer to Note 17 Revenue from Contracts with Customers for further discussion on the Corporation’s accounting policies for revenue sources within the scope of ASC 606. The adoption of this ASU did not have an impact to our Consolidated Financial Statements.

FASB ASU 2017-1 (Topic 805), “Business Combinations”

The Corporation adopted ASU 2017-1, which clarifies the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The definition of a business affects many areas of accounting including acquisitions, disposals, goodwill, and consolidation. The adoption of this ASU did not have a material impact on our Consolidated Financial Statements and related disclosures.

FASB ASU 2016-15 (Topic 320), “Classification of Certain Cash Receipts and Cash Payments”

The Corporation adopted ASU 2016-15, which provides guidance on eight specific cash flow issues and their disclosure in the consolidated statements of cash flows. The issues addressed include debt prepayment, settlement of zero-coupon debt, contingent consideration in business combinations, proceeds from settlement of insurance claims, proceeds from settlement of BOLI, distributions received from equity method investees, beneficial interests in securitization transactions, and separately identifiable cash flows and application of the predominance principle. The adoption of this ASU did not have a material impact on our Consolidated Financial Statements and related disclosures.

FASB ASU 2016-1 (Subtopic 825-10), “Financial Instruments – Overall, Recognition and Measurement of Financial Assets and Financial Liabilities”

The Corporation adopted ASU 2016-1 which requires that equity investments be measured at fair value with changes in fair value recognized in net income. The Corporation’s equity investments with a readily determinable fair value are currently included within trading securities and are measured at fair value with changes in fair value recognized in net income. In connection with the adoption of this ASU, the Corporation elected the practicability exception to fair value measurement for investments in equity securities without a readily determinable fair value (other than our Federal Home Loan Bank (“FHLB”), Federal Reserve Bank ("FRB"), and Atlantic Central Bankers Bank stock, which are outside of the scope of this ASU). Under the practicability exception, the investments are measured at cost, less impairment, plus or minus observable price changes (in orderly transactions) of an identical or similar investment of the same issuer. The adoption of this ASU did not have a material impact on our Consolidated Financial Statements.

FASB ASU 2017-7 – Compensation – Retirement Benefits (Topic 715): “Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost”

On January 1, 2018, the Corporation adopted ASU 2017-7 and all subsequent amendments to the ASU, which requires that an employer report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the income statement separately from the service cost component and outside a subtotal of income from operations, if one is presented. If a separate line item or items are used to present the other components of net benefit cost, that line item or items must be appropriately described. If a separate line item or items are not used, the line item or items used in the income statement to present the other components of net benefit cost must be disclosed. The amendments in this update also allow only the service cost component to be eligible for capitalization when applicable (for example, as a cost of internally manufactured inventory or a self-constructed asset).

Upon adoption, the components of net periodic benefit cost other than the service cost component were reclassified retrospectively from “Employee benefits” to “Other operating expenses” in the Consolidated Statements of Income. Since both “Employee benefits” and “Other operating expenses” line items of these income statement line items are within “Noninterest expenses”, there was no impact to total “Noninterest expenses” or “Net income.” The components of net periodic benefit cost are currently disclosed in Note 17 – “Pension and Postretirement Benefit Plans” in the Notes to Consolidated Financial Statements found in our 2017 Annual Report. Additionally, the Corporation does not currently capitalize any components of its net periodic benefit costs. The adoption of this ASU did not have a material impact on our Consolidated Financial Statements and related disclosures.

Pronouncements Not Yet Effective:

FASB ASU 2018-07: Compensation - Stock Compensation (Topic 718), “Improvements to Nonemployee Share-Based Payment Accounting”

Issued in June 2018, the FASB issued ASU 2018-07: Compensation - Stock Compensation (Topic 718), “Improvements to Nonemployee Share-Based Payment Accounting.” The amendments in this update expand the scope of Topic 718 to include share-based payment transactions for acquiring goods and services from nonemployees. An entity should apply the requirements of Topic 718 to nonemployee awards except for specific guidance on inputs to an option pricing model and the attribution of cost (that is, the period of time over which share-based payment awards vest and the pattern of cost recognition over that period). The amendments specify that Topic 718 applies to all share-based payment transactions in which a grantor acquires goods or services to be used or consumed in a grantor’s own operations by issuing share-based payment awards. The amendments also clarify that Topic 718 does not apply to share-based payments used to effectively provide (1) financing to the issuer or (2) awards granted in conjunction with selling goods or services to customers as part of a contract accounted for under Topic 606, Revenue from Contracts with Customers. The amendments in this update are effective for public business entities for fiscal years beginning after December 15, 2018, including interim periods within that fiscal year. The Corporation has not historically granted share based payment awards to nonemployees other than to the Corporation’s Board of Directors, who are treated as employees for share-based payment accounting. As a result, Management does not expect the adoption of this ASU to have an impact on our Consolidated Financial Statements and related disclosures.

FASB ASU 2017-4 (Topic 350), “Intangibles – Goodwill and Others”

Issued in January 2017, ASU 2017-4 simplifies how an entity is required to test goodwill for impairment by eliminating Step 2 from the goodwill impairment test. Step 2 measures a goodwill impairment loss by comparing the implied fair value of a reporting unit’s goodwill with the carrying amount of that goodwill. ASU 2017-4 is effective for annual periods beginning after December 15, 2019 including interim periods within those periods. Management does not expect the adoption of this ASU to have a material impact on our Consolidated Financial Statements and related disclosures.

FASB ASU 2016-13 (Topic 326), “Measurement of Credit Losses on Financial Instruments”

Issued in June 2016, ASU 2016-13 significantly changes how companies measure and recognize credit impairment for many financial assets. The new current expected credit loss (“CECL”) model will require companies to immediately recognize an estimate of credit losses expected to occur over the remaining life of the financial assets that are in the scope of the standard. The ASU also makes targeted amendments to the current impairment model for available-for-sale debt securities. ASU 2016-13 is effective for the annual and interim periods in fiscal years beginning after December 15, 2019, with early adoption permitted. Adoption of this new guidance can be applied only on a prospective basis as a cumulative-effect adjustment to retained earnings.

It is expected that the new model will include different assumptions used in calculating credit losses, such as estimating losses over the estimated life of a financial asset, and will consider expected future changes in macroeconomic conditions. The adoption of this ASU may result in an increase to the Corporation’s allowance for credit losses, which will depend upon the nature and characteristics of the Corporation 's portfolio at the adoption date, as well as the macroeconomic conditions and forecasts at the adoption date. The Corporation has engaged the services of a third-party consultant as well as invested in software designed to assist management in the development and implementation of the new CECL model. Management is currently in the process of validating historical data uploaded within the third-party software. The adoption of this ASU will also require the addition of an allowance for held-to-maturity debt securities. The Corporation currently does not intend to early adopt this new guidance.

FASB ASU 2016-2 (Topic 842), “Leases”

Issued in February 2016, ASU 2016-2 revises the accounting related to lessee accounting. Under the new guidance, lessees will be required to recognize a lease liability and a right-of-use asset for all leases. The new lease guidance also simplifies the accounting for sale and leaseback transactions primarily because lessees must recognize lease assets and lease liabilities. ASU 2016-2 is effective for the first interim period within annual periods beginning after December 15, 2018, with early adoption permitted. The standard is required to be adopted using the modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. Management is in-process of refining and reviewing the key assumptions needed to finalize the calculation of the lease liability and a right-of-use asset for all existing leases of the Corporation. Management is aware that the adoption of this ASU will impact the Corporation’s balance sheet for the recording of assets and liabilities for operating leases. Any additional assets recorded as a result of implementation will have a negative impact on the Corporation and Bank capital ratios under current regulatory guidance.