Recent Accounting Pronouncements	9 Months Ended
Sep. 30, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements Recently Adopted: In May 2014, the FASB issued ASU No. 2014-09, "Revenue from Contracts with Customers (Topic 606)." This standard clarifies the principles for recognizing revenue and developed a common revenue standard. The core principle of the standard is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and services. To achieve that core principle, an entity should apply the following steps: (i) identify the contract or contracts with a customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract and (v) recognize revenue when (or as) the entity satisfies a performance obligation. The FASB also issued several amendments to the standard, including clarifications relating to performance obligations and licensing implementation guidance and reporting gross versus net revenue. The Company adopted the standard effective January 1, 2018 using the modified retrospective approach, but did not record a cumulative effect adjustment to opening retained earnings given the immaterial impact. As part of the adoption, the Company evaluated the terms of the contracts that supported each of the revenue streams that were within the scope of ASU 2014-09 and determined that the adoption did not significantly change the way the Company recognizes revenue from each stream (see Note M - Contracts with Customers). In January 2016, the FASB issued ASU No. 2016-01, "Financial Instruments—Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities." This standard makes several modifications to Subtopic 825-10 including the elimination of the available-for-sale classification of equity investments, and requires equity investments with readily determinable fair values to be measured at fair value with changes in fair value recognized in net income. This ASU became effective for the Company for interim and annual periods on January 1, 2018. During the nine months ended September 30, 2018, a $1.2 million gain was recognized in other income in the consolidated statements of income as a result of the change in the fair value of equity and perpetual preferred securities due to the adoption of ASU 2016-01. Additionally, $2.7 million, net of deferred taxes, was reclassified from other comprehensive income to retained earnings on the consolidated balance sheets to recognize the prior period unrealized gain position of these securities (see Note C - Investments and Note J - Accumulated Other Comprehensive Loss). In January 2017, the FASB issued ASU No. 2017-01, "Business Combinations (Topic 805): Clarifying the Definition of a Business." This amendment 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. This ASU became effective for the Company on January 1, 2018. The adoption of ASU No. 2017-01 did not have a material impact on the Company's financial statements. In March 2017, the FASB issued ASU No. 2017-07, "Compensation—Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost." This amendment requires that an employer disaggregate the service cost component from the other components of net benefit cost and also provides explicit guidance on how to present the service cost component and the other components of net benefit cost in the income statement. This ASU became effective for the Company on January 1, 2018. The adoption of ASU No. 2017-07 did not have a material impact on the Company's financial statements. In May 2017, the FASB issued ASU No. 2017-09, "Compensation—Stock Compensation (Topic 718): Scope of Modification Accounting." This amendment provides guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in ASU No. 2016-09. This ASU became effective for the Company on January 1, 2018. The adoption of ASU No. 2017-09 did not have a material impact on the Company’s financial statements. In September 2017, the FASB issued ASU No. 2017-13, "Revenue Recognition (Topic 605), Revenue from Contracts with Customers (Topic 606), Leases (Topic 840), and Leases (Topic 842)." This amendment provides modifications to previously issued ASUs 2014-09 and 2016-02. The adoption of ASU No. 2017-13 did not have a material impact on the Company's financial statements. In November 2017, the FASB issued ASU No. 2017-14, "Income Statement—Reporting Comprehensive Income (Topic 220), Revenue Recognition (Topic 605), and Revenue from Contracts with Customers (Topic 606)." This amendment supersedes various SEC paragraphs and amends an SEC paragraph pursuant to the issuance of Staff Accounting Bulletin No. 116. The adoption of ASU No. 2017-14 did not have a material impact on the Company's financial statements. In February 2018, the FASB issued ASU No. 2018-02, "Income Statement—Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income." This amendment permits entities to reclassify tax effects stranded in accumulated other comprehensive income as a result of the Tax Cuts and Jobs Act ("TCJA") to retained earnings. The guidance is effective for all entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years, with early adoption permissible. The Company elected to early adopt this amendment as of December 31, 2017 and the December 31, 2017 balance sheet reflects this adoption. Pending Adoption: In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842).” This standard requires organizations to recognize lease assets and lease liabilities on the balance sheet and disclose key information about leasing requirements for leases that were historically classified as operating leases under previous generally accepted accounting principals. This ASU will become effective for the Company for interim and annual periods on January 1, 2019. The Company's preliminary evaluation indicates that the adoption of ASU 2016-02 will have an immaterial impact on the Company's consolidated balance sheet. However, the Company continues to evaluate the extent of the potential impact the new guidance will have on the Company's consolidated financial statements. In June 2016, the FASB issued ASU No. 2016-13, "Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments." This standard replaces 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 inform credit loss estimates. The amendments in this update require a financial asset (or a group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The new current expected credit losses model (CECL) will apply to the allowance for loan losses, available-for-sale and held-to-maturity debt securities, purchased financial assets with credit deterioration and certain off-balance sheet credit exposures. This ASU will become effective for the Company for interim and annual periods on January 1, 2020. Management is currently evaluating the potential impact of ASU No. 2016-13 on the Company's financial statements. In January 2017, the FASB issued ASU No. 2017-04, "Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment." This amendment simplifies the measurement of goodwill by eliminating Step 2 from the goodwill impairment test. This ASU will become effective for the Company on January 1, 2020. The adoption of ASU No. 2017-04 is not expected to have a material impact on the Company's financial statements. In March 2017, the FASB issued ASU No. 2017-08, "Receivables—Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities." The amendments in this update shorten the amortization period for certain callable debt securities held at a premium and require the premium to be amortized to the earliest call date. This ASU will become effective for the Company on January 1, 2019. The adoption of ASU No. 2017-08 is not expected to have a material impact on the Company's financial statements. In August 2017, the FASB issued ASU No. 2017-12, "Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities." This amendment expands and refines hedge accounting for both nonfinancial and financial risk components and aligns the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. This ASU will become effective for the Company on January 1, 2019. The adoption of ASU No. 2017-12 is not expected to have a material impact on the Company's financial statements. In July 2018, the FASB issued ASU No. 2018-10, "Codification Improvements to Topic 842, Leases." This amendment provides improvements to specific sections of previously issued lease guidance, including a package of three practical expedients regarding the reassessment of prior period leases. This ASU will become effective for the Company on January 1, 2019. The adoption of ASU No. 2018-10 is not expected to have a material impact on the Company's financial statements. In July 2018, the FASB issued ASU No. 2018-11, "Leases (Topic 842): Targeted Improvements." This amendment offers a practical expedient that allows the Company to recognize the prior period balance sheet impacts in the period of adoption and will not require adjustments to the prior period financial statements when adopting ASU No. 2016-02 described above. This ASU will become effective for the Company on January 1, 2019. The adoption of ASU No. 2018-11 is not expected to have a material impact on the Company's financial statements. In August 2018, the FASB issued ASU No. 2018-13, "Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement." This amendment removes, modifies, and clarifies the disclosure requirements on fair value measurements in Topic 820, Fair Value Measurement. This ASU will become effective for the Company on January 1, 2020. The adoption of ASU No. 2018-13 is not expected to have a material impact on the Company's financial statements. In August 2018, the FASB issued ASU No. 2018-14, "Compensation-Retirement Benefits-Defined Benefit Plans-General (Subtopic 715-20): Disclosure Framework-Changes to the Disclosure Requirements for Defined Benefit Plans." This amendment removes, modifies, and clarifies certain disclosure requirements for defined benefit plans and other post-employment benefit plans. This ASU will become effective for the Company on January 1, 2021. The adoption of ASU No. 2018-14 is not expected to have a material impact on the Company's financial statements.

Recent Accounting Pronouncements

Recently Adopted:

In May 2014, the FASB issued ASU No. 2014-09, "Revenue from Contracts with Customers (Topic 606)." This standard clarifies the principles for recognizing revenue and developed a common revenue standard. The core principle of the standard is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and services. To achieve that core principle, an entity should apply the following steps: (i) identify the contract or contracts with a customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract and (v) recognize revenue when (or as) the entity satisfies a performance obligation. The FASB also issued several amendments to the standard, including clarifications relating to performance obligations and licensing implementation guidance and reporting gross versus net revenue. The Company adopted the standard effective January 1, 2018 using the modified retrospective approach, but did not record a cumulative effect adjustment to opening retained earnings given the immaterial impact. As part of the adoption, the Company evaluated the terms of the contracts that supported each of the revenue streams that were within the scope of ASU 2014-09 and determined that the adoption did not significantly change the way the Company recognizes revenue from each stream (see Note M - Contracts with Customers).

In January 2016, the FASB issued ASU No. 2016-01, "Financial Instruments—Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities." This standard makes several modifications to Subtopic 825-10 including the elimination of the available-for-sale classification of equity investments, and requires equity investments with readily determinable fair values to be measured at fair value with changes in fair value recognized in net income. This ASU became effective for the Company for interim and annual periods on January 1, 2018. During the nine months ended September 30, 2018, a $1.2 million gain was recognized in other income in the consolidated statements of income as a result of the change in the fair value of equity and perpetual preferred securities due to the adoption of ASU 2016-01. Additionally, $2.7 million, net of deferred taxes, was reclassified from other comprehensive income to retained earnings on the consolidated balance sheets to recognize the prior period unrealized gain position of these securities (see Note C - Investments and Note J - Accumulated Other Comprehensive Loss).

In January 2017, the FASB issued ASU No. 2017-01, "Business Combinations (Topic 805): Clarifying the Definition of a Business." This amendment 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. This ASU became effective for the Company on January 1, 2018. The adoption of ASU No. 2017-01 did not have a material impact on the Company's financial statements.

In March 2017, the FASB issued ASU No. 2017-07, "Compensation—Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost." This amendment requires that an employer disaggregate the service cost component from the other components of net benefit cost and also provides explicit guidance on how to present the service cost component and the other components of net benefit cost in the income statement. This ASU became effective for the Company on January 1, 2018. The adoption of ASU No. 2017-07 did not have a material impact on the Company's financial statements.

In May 2017, the FASB issued ASU No. 2017-09, "Compensation—Stock Compensation (Topic 718): Scope of Modification Accounting." This amendment provides guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in ASU No. 2016-09. This ASU became effective for the Company on January 1, 2018. The adoption of ASU No. 2017-09 did not have a material impact on the Company’s financial statements.

In September 2017, the FASB issued ASU No. 2017-13, "Revenue Recognition (Topic 605), Revenue from Contracts with Customers (Topic 606), Leases (Topic 840), and Leases (Topic 842)." This amendment provides modifications to previously issued ASUs 2014-09 and 2016-02. The adoption of ASU No. 2017-13 did not have a material impact on the Company's financial statements.

In November 2017, the FASB issued ASU No. 2017-14, "Income Statement—Reporting Comprehensive Income (Topic 220), Revenue Recognition (Topic 605), and Revenue from Contracts with Customers (Topic 606)." This amendment supersedes various SEC paragraphs and amends an SEC paragraph pursuant to the issuance of Staff Accounting Bulletin No. 116. The adoption of ASU No. 2017-14 did not have a material impact on the Company's financial statements.

In February 2018, the FASB issued ASU No. 2018-02, "Income Statement—Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income." This amendment permits entities to reclassify tax effects stranded in accumulated other comprehensive income as a result of the Tax Cuts and Jobs Act ("TCJA") to retained earnings. The guidance is effective for all entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years, with early adoption permissible. The Company elected to early adopt this amendment as of December 31, 2017 and the December 31, 2017 balance sheet reflects this adoption.

Pending Adoption:

In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842).” This standard requires organizations to recognize lease assets and lease liabilities on the balance sheet and disclose key information about leasing requirements for leases that were historically classified as operating leases under previous generally accepted accounting principals. This ASU will become effective for the Company for interim and annual periods on January 1, 2019. The Company's preliminary evaluation indicates that the adoption of ASU 2016-02 will have an immaterial impact on the Company's consolidated balance sheet. However, the Company continues to evaluate the extent of the potential impact the new guidance will have on the Company's consolidated financial statements.

In June 2016, the FASB issued ASU No. 2016-13, "Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments." This standard replaces 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 inform credit loss estimates. The amendments in this update require a financial asset (or a group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The new current expected credit losses model (CECL) will apply to the allowance for loan losses, available-for-sale and held-to-maturity debt securities, purchased financial assets with credit deterioration and certain off-balance sheet credit exposures. This ASU will become effective for the Company for interim and annual periods on January 1, 2020. Management is currently evaluating the potential impact of ASU No. 2016-13 on the Company's financial statements.

In January 2017, the FASB issued ASU No. 2017-04, "Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment." This amendment simplifies the measurement of goodwill by eliminating Step 2 from the goodwill impairment test. This ASU will become effective for the Company on January 1, 2020. The adoption of ASU No. 2017-04 is not expected to have a material impact on the Company's financial statements.

In March 2017, the FASB issued ASU No. 2017-08, "Receivables—Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities." The amendments in this update shorten the amortization period for certain callable debt securities held at a premium and require the premium to be amortized to the earliest call date. This ASU will become effective for the Company on January 1, 2019. The adoption of ASU No. 2017-08 is not expected to have a material impact on the Company's financial statements.

In August 2017, the FASB issued ASU No. 2017-12, "Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities." This amendment expands and refines hedge accounting for both nonfinancial and financial risk components and aligns the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. This ASU will become effective for the Company on January 1, 2019. The adoption of ASU No. 2017-12 is not expected to have a material impact on the Company's financial statements.

In July 2018, the FASB issued ASU No. 2018-10, "Codification Improvements to Topic 842, Leases." This amendment provides improvements to specific sections of previously issued lease guidance, including a package of three practical expedients regarding the reassessment of prior period leases. This ASU will become effective for the Company on January 1, 2019. The adoption of ASU No. 2018-10 is not expected to have a material impact on the Company's financial statements.

In July 2018, the FASB issued ASU No. 2018-11, "Leases (Topic 842): Targeted Improvements." This amendment offers a practical expedient that allows the Company to recognize the prior period balance sheet impacts in the period of adoption and will not require adjustments to the prior period financial statements when adopting ASU No. 2016-02 described above. This ASU will become effective for the Company on January 1, 2019. The adoption of ASU No. 2018-11 is not expected to have a material impact on the Company's financial statements.

In August 2018, the FASB issued ASU No. 2018-13, "Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement." This amendment removes, modifies, and clarifies the disclosure requirements on fair value measurements in Topic 820, Fair Value Measurement. This ASU will become effective for the Company on January 1, 2020. The adoption of ASU No. 2018-13 is not expected to have a material impact on the Company's financial statements.

In August 2018, the FASB issued ASU No. 2018-14, "Compensation-Retirement Benefits-Defined Benefit Plans-General (Subtopic 715-20): Disclosure Framework-Changes to the Disclosure Requirements for Defined Benefit Plans." This amendment removes, modifies, and clarifies certain disclosure requirements for defined benefit plans and other post-employment benefit plans. This ASU will become effective for the Company on January 1, 2021. The adoption of ASU No. 2018-14 is not expected to have a material impact on the Company's financial statements.