SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	3 Months Ended
Mar. 31, 2018
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Organization The Corporation, through its wholly-owned subsidiaries, the Bank and CFS, provides a wide range of banking, financing, fiduciary and other financial services to its clients. The Corporation and the Bank are subject to the regulations of certain federal and state agencies and undergo periodic examinations by those regulatory authorities. CRM, a wholly-owned subsidiary of the Corporation, which was formed and began operations on May 31, 2016, is a Nevada-based captive insurance company which insures against certain risks unique to the operations of the Corporation and its subsidiaries and for which insurance may not be currently available or economically feasible in today's insurance marketplace. CRM pools resources with several other similar insurance company subsidiaries of financial institutions to spread a limited amount of risk among themselves. CRM is subject to regulations of the State of Nevada and undergoes periodic examinations by the Nevada Division of Insurance. Basis of Presentation The accompanying unaudited consolidated financial statements have been prepared in conformity with GAAP for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Article 10 of Regulation S-X of the Exchange Act. These financial statements include the accounts of the Corporation and its subsidiaries, and all significant intercompany balances and transactions are eliminated in consolidation. Amounts in the prior periods' consolidated financial statements are reclassified whenever necessary to conform to the current period's presentation. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and disclosures provided, and actual results could differ. In the opinion of management, all adjustments (consisting of normal recurring adjustments) and disclosures necessary for the fair presentation of the accompanying consolidated financial statements have been included. The unconsolidated financial statements should be read in conjunction with the Corporation's 2017 Annual Report on Form 10-K for the year ended December 31, 2017. The results of operations for any interim periods are not necessarily indicative of the results which may be expected for the entire year. Reclassifications Some items in the prior year financial statements were reclassified to conform to the current presentation. Reclassifications had no effect on prior year net income or shareholders' equity. Recent Accounting Pronouncements In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). ASU 2016-02 requires companies that lease valuable assets to recognize on their balance sheets the assets and liabilities generated by contracts longer than a year. The amendments in this update are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018, though early adoption is permitted. The Corporation intends to adopt the new lease guidance as of January 1, 2019 and is currently evaluating the impact that adoption of these updates will have on its consolidated financial statements. Currently, the Corporation believes the implementation of this ASU will create a right of use asset of less than $10.0 million for the Corporation's 15 leased facilities and a related capital obligation of the same amount as of January 1, 2019. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The objective of the ASU is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date by replacing the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to form credit loss estimates. The amendments in this ASU are effective for public companies for fiscal years beginning after December 15, 2019, though entities may adopt the amendments earlier for fiscal years beginning after December 15, 2018. The Corporation is currently evaluating the impact of the adoption of this guidance on its consolidated financial statements. The Corporation anticipates that the adoption of the CECL model will result in an increase to the Corporation's allowance for loan losses. The Corporation has established a committee to oversee the implementation of CECL and has selected a vendor to assist in the implementation process. In 2018 the committee plans to begin establishing parameters which will be used in the CECL model with the selected vendor. The Corporation further plans to run its current incurred loss model and a CECL model concurrently for twelve months prior to the adoption of this guidance on January 1, 2020. In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. The objective of the ASU is to simplify the manner in which an entity is required to test goodwill for impairment by eliminating Step 2 from the goodwill impairment test. Additionally, the ASU removes the requirement for any reporting unit with a zero or negative carrying amount to perform a qualitative assessment and, if it fails such qualitative test, to perform Step 2 of the goodwill impairment test. The amendments in this ASU are effective for annual, or any interim, goodwill impairment tests in fiscal years beginning after December 15, 2019. The adoption of the ASU is not expected to have a significant impact on the Corporation's consolidated financial statements. In March 2017, the FASB issued ASU 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities. The objective of the ASU is to align the amortization period of premiums and discounts to expectations incorporated in market pricing on the underlying securities. The amendment requires that the premium be amortized to the earliest call date, but does not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. The amendments in this ASU are effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2018. The adoption of the ASU is not expected to have a significant impact on the Corporation's consolidated financial statements. Adoption of New Accounting Standards On December 31, 2017, the Corporation elected for early adoption of ASU 2018-02, Income Statement - Reporting Comprehensive Income: Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income ("ASC 220"). The objective of ASC 220 was to allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Act passed in December 2017. Adoption of ASC 220 eliminated the stranded tax effects within accumulated other comprehensive income resulting from the revaluation of the net deferred tax asset. Results for the three and twelve months ended December 31, 2017 were presented in accordance with ASC 220, with a reclassification of $1.8 million from accumulated other comprehensive income to retained earnings. The adoption of ASC 220 did not result in any adjustments during the first quarter of 2018 and the Corporation does not expect any adjustments going forward. On January 1, 2018, the Corporation adopted ASU 2014-09 Revenue from Contracts with Customers and all subsequent amendments to the ASU (collectively, "ASC 606"), which (1) creates a single framework for recognizing revenue from contracts with customers that fall within its scope and (2) revises when it is appropriate to recognize a gain (loss) from the transfer of nonfinancial assets, such as other real estate owned. The majority of the Corporation's revenues come from interest income and other sources, including loans, leases, 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 Non-interest income and are recognized as revenue as the Corporation satisfies its obligation to the customer. Services within the scope of ASC 606 include deposit service charges on deposits, interchange income, wealth management fees, investment brokerage fees, and the sale of other real estate owned. Refer to Note 10 Revenue from Contracts with Customers for further discussion on the Corporation's accounting policies for revenue sources within the scope of ASC 606. The Corporation adopted ASC 606 using the modified retrospective method applied to all contracts not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under ASC 606, while prior period amounts continue to be reported in accordance with legacy GAAP. The adoption of ASC 606 did not result in a change to the accounting for any of the in-scope revenue streams; as such, no cumulative effect adjustment was recorded. On January 1, 2018, the Corporation adopted ASU 2016-01, an amendment to Recognition and Measurement of Financial Assets and Financial Liabilities ("ASC 825"). The objectives of the ASC 825 were (1) require equity investments to be measured at fair value, with changes in fair value recognized in net income, (2) simplify the impairment assessment of equity investments without readily determinable fair values, (3) eliminate the requirement to disclose methods and significant assumptions used to estimate fair value for financial instruments measured at amortized cost on the balance sheet, (4) require the use of the exit price notion when measuring the fair value of financial instruments, and (5) clarify the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity’s other deferred tax assets. The Corporation adopted ASC 825 using the modified retrospective method applied to equity investments as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under ASC 825, with comparable consolidated balance sheets also reported. The adjustments to opening retained earnings and accumulated other comprehensive loss related to the adoption of ASC 825 and are immaterial to the financial statements. On January 1, 2018, the Corporation adopted ASU 2016-15, Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments ("ASC 230"). The objective of ASC 230 was to reduce the existing diversity in practice relating to eight specific cash flow issues: (1) debt prepayment or debt extinguishment costs, (2) settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing, (3) contingent consideration payments made after a business combination, (4) proceeds from the settlement of insurance claims, (5) proceeds from the settlement of corporate-owned life insurance policies, including bank-owned life insurance policies, (6) distributions received from equity method investees, (7) beneficial interests in securitization transactions, and (8) separately identifiable cash flows and application of the predominance principal. Results for reporting periods beginning after January 1, 2018 are presented under ASC 230, while prior periods amounts continue to be reported in accordance with legacy GAAP. The adoption of ASC 230 did not result in a change to how the Corporation accounts for its cash flows. On January 1, 2018, the Corporation adopted ASU 2017-07, Compensation - Retirement Benefits - Improving the Presentation of Net Periodic Cost and Net Periodic Postretirement Benefit Cost ("ASC 715"). The objective of ASC 715 was to improve guidance related to the presentation of defined benefit costs in the income statement. Specifically, ASC 715 required that an employer report the service cost component in the same line item(s) 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. Additionally, ASC 715 allows only the service cost component to be eligible for capitalization, when applicable. Results for reporting periods beginning after January 1, 2018 are presented under ASC 715, while prior period amounts continue to be reported in accordance with legacy GAAP, with comparable periods presented retrospectively for the presentation of the service cost and net periodic postretirement benefit cost in the income statement. The Corporation elected the practical expedient, which permits employers to use the amounts disclosed in its pension and other postretirement benefit plan note for the prior comparative periods as the estimation for applying retrospective presentation requirements.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Organization

The Corporation, through its wholly-owned subsidiaries, the Bank and CFS, provides a wide range of banking, financing, fiduciary and other financial services to its clients. The Corporation and the Bank are subject to the regulations of certain federal and state agencies and undergo periodic examinations by those regulatory authorities.

CRM, a wholly-owned subsidiary of the Corporation, which was formed and began operations on May 31, 2016, is a Nevada-based captive insurance company which insures against certain risks unique to the operations of the Corporation and its subsidiaries and for which insurance may not be currently available or economically feasible in today's insurance marketplace. CRM pools resources with several other similar insurance company subsidiaries of financial institutions to spread a limited amount of risk among themselves. CRM is subject to regulations of the State of Nevada and undergoes periodic examinations by the Nevada Division of Insurance.

Basis of Presentation

The accompanying unaudited consolidated financial statements have been prepared in conformity with GAAP for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Article 10 of Regulation S-X of the Exchange Act. These financial statements include the accounts of the Corporation and its subsidiaries, and all significant intercompany balances and transactions are eliminated in consolidation. Amounts in the prior periods' consolidated financial statements are reclassified whenever necessary to conform to the current period's presentation.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and disclosures provided, and actual results could differ. In the opinion of management, all adjustments (consisting of normal recurring adjustments) and disclosures necessary for the fair presentation of the accompanying consolidated financial statements have been included. The unconsolidated financial statements should be read in conjunction with the Corporation's 2017 Annual Report on Form 10-K for the year ended December 31, 2017. The results of operations for any interim periods are not necessarily indicative of the results which may be expected for the entire year.

Reclassifications

Some items in the prior year financial statements were reclassified to conform to the current presentation. Reclassifications had no effect on prior year net income or shareholders' equity.

Recent Accounting Pronouncements

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). ASU 2016-02 requires companies that lease valuable assets to recognize on their balance sheets the assets and liabilities generated by contracts longer than a year. The amendments in this update are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018, though early adoption is permitted. The Corporation intends to adopt the new lease guidance as of January 1, 2019 and is currently evaluating the impact that adoption of these updates will have on its consolidated financial statements. Currently, the Corporation believes the implementation of this ASU will create a right of use asset of less than $10.0 million for the Corporation's 15 leased facilities and a related capital obligation of the same amount as of January 1, 2019.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The objective of the ASU is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date by replacing the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to form credit loss estimates. The amendments in this ASU are effective for public companies for fiscal years beginning after December 15, 2019, though entities may adopt the amendments earlier for fiscal years beginning after December 15, 2018. The Corporation is currently evaluating the impact of the adoption of this guidance on its consolidated financial statements. The Corporation anticipates that the adoption of the CECL model will result in an increase to the Corporation's allowance for loan losses. The Corporation has established a committee to oversee the implementation of CECL and has selected a vendor to assist in the implementation process. In 2018 the committee plans to begin establishing parameters which will be used in the CECL model with the selected vendor. The Corporation further plans to run its current incurred loss model and a CECL model concurrently for twelve months prior to the adoption of this guidance on January 1, 2020.

In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. The objective of the ASU is to simplify the manner in which an entity is required to test goodwill for impairment by eliminating Step 2 from the goodwill impairment test. Additionally, the ASU removes the requirement for any reporting unit with a zero or negative carrying amount to perform a qualitative assessment and, if it fails such qualitative test, to perform Step 2 of the goodwill impairment test. The amendments in this ASU are effective for annual, or any interim, goodwill impairment tests in fiscal years beginning after December 15, 2019. The adoption of the ASU is not expected to have a significant impact on the Corporation's consolidated financial statements.

In March 2017, the FASB issued ASU 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities. The objective of the ASU is to align the amortization period of premiums and discounts to expectations incorporated in market pricing on the underlying securities. The amendment requires that the premium be amortized to the earliest call date, but does not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. The amendments in this ASU are effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2018. The adoption of the ASU is not expected to have a significant impact on the Corporation's consolidated financial statements.

Adoption of New Accounting Standards

On December 31, 2017, the Corporation elected for early adoption of ASU 2018-02, Income Statement - Reporting Comprehensive Income: Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income ("ASC 220"). The objective of ASC 220 was to allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Act passed in December 2017. Adoption of ASC 220 eliminated the stranded tax effects within accumulated other comprehensive income resulting from the revaluation of the net deferred tax asset. Results for the three and twelve months ended December 31, 2017 were presented in accordance with ASC 220, with a reclassification of $1.8 million from accumulated other comprehensive income to retained earnings. The adoption of ASC 220 did not result in any adjustments during the first quarter of 2018 and the Corporation does not expect any adjustments going forward.

On January 1, 2018, the Corporation adopted ASU 2014-09 Revenue from Contracts with Customers and all subsequent amendments to the ASU (collectively, "ASC 606"), which (1) creates a single framework for recognizing revenue from contracts with customers that fall within its scope and (2) revises when it is appropriate to recognize a gain (loss) from the transfer of nonfinancial assets, such as other real estate owned. The majority of the Corporation's revenues come from interest income and other sources, including loans, leases, 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 Non-interest income and are recognized as revenue as the Corporation satisfies its obligation to the customer. Services within the scope of ASC 606 include deposit service charges on deposits, interchange income, wealth management fees, investment brokerage fees, and the sale of other real estate owned. Refer to Note 10 Revenue from Contracts with Customers for further discussion on the Corporation's accounting policies for revenue sources within the scope of ASC 606.

The Corporation adopted ASC 606 using the modified retrospective method applied to all contracts not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under ASC 606, while prior period amounts continue to be reported in accordance with legacy GAAP. The adoption of ASC 606 did not result in a change to the accounting for any of the in-scope revenue streams; as such, no cumulative effect adjustment was recorded.

On January 1, 2018, the Corporation adopted ASU 2016-01, an amendment to Recognition and Measurement of Financial Assets and Financial Liabilities ("ASC 825"). The objectives of the ASC 825 were (1) require equity investments to be measured at fair value, with changes in fair value recognized in net income, (2) simplify the impairment assessment of equity investments without readily determinable fair values, (3) eliminate the requirement to disclose methods and significant assumptions used to estimate fair value for financial instruments measured at amortized cost on the balance sheet, (4) require the use of the exit price notion when measuring the fair value of financial instruments, and (5) clarify the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity’s other deferred tax assets.

The Corporation adopted ASC 825 using the modified retrospective method applied to equity investments as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under ASC 825, with comparable consolidated balance sheets also reported. The adjustments to opening retained earnings and accumulated other comprehensive loss related to the adoption of ASC 825 and are immaterial to the financial statements.

On January 1, 2018, the Corporation adopted ASU 2016-15, Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments ("ASC 230"). The objective of ASC 230 was to reduce the existing diversity in practice relating to eight specific cash flow issues: (1) debt prepayment or debt extinguishment costs, (2) settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing, (3) contingent consideration payments made after a business combination, (4) proceeds from the settlement of insurance claims, (5) proceeds from the settlement of corporate-owned life insurance policies, including bank-owned life insurance policies, (6) distributions received from equity method investees, (7) beneficial interests in securitization transactions, and (8) separately identifiable cash flows and application of the predominance principal. Results for reporting periods beginning after January 1, 2018 are presented under ASC 230, while prior periods amounts continue to be reported in accordance with legacy GAAP. The adoption of ASC 230 did not result in a change to how the Corporation accounts for its cash flows.

On January 1, 2018, the Corporation adopted ASU 2017-07, Compensation - Retirement Benefits - Improving the Presentation of Net Periodic Cost and Net Periodic Postretirement Benefit Cost ("ASC 715"). The objective of ASC 715 was to improve guidance related to the presentation of defined benefit costs in the income statement. Specifically, ASC 715 required that an employer report the service cost component in the same line item(s) 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. Additionally, ASC 715 allows only the service cost component to be eligible for capitalization, when applicable. Results for reporting periods beginning after January 1, 2018 are presented under ASC 715, while prior period amounts continue to be reported in accordance with legacy GAAP, with comparable periods presented retrospectively for the presentation of the service cost and net periodic postretirement benefit cost in the income statement. The Corporation elected the practical expedient, which permits employers to use the amounts disclosed in its pension and other postretirement benefit plan note for the prior comparative periods as the estimation for applying retrospective presentation requirements.