New Accounting Standards (Policies)	6 Months Ended
Jun. 30, 2017
Accounting Changes and Error Corrections [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	Standards Updates Issued Not Yet Effective 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." Under the new guidance, employers must present the service cost component of the net periodic benefit cost in the same income statement line item(s) as other employee compensation costs arising from services rendered during the period. In addition, only the service cost component will be eligible for capitalization in assets. The other components of net periodic benefit cost must be reported separately from the line item(s) that includes the service cost component and outside of any subtotal of operating income, if one is presented. Employers will have to disclose the line(s) used to present the other components of net periodic benefit cost, if the components are not presented separately in the income statement. The guidance on the income statement presentation of the components of net periodic benefit cost must be applied retrospectively, while the guidance limiting the capitalization of net periodic benefit cost in assets to the service cost component must be applied prospectively. For public business entities, the guidance is effective for fiscal years beginning after December 15, 2017, and interim periods within those years. Early adoption is permitted as of the beginning of an annual period for which interim financial statements have not been issued. The Company is currently evaluating the impact the adoption of ASU No. 2017-07 will have on its consolidated financial statements. In August 2016, the FASB issued ASU No. 2016-15, "Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments," to reduce the existing diversity in practice related to how certain cash receipts and cash payments are presented and classified in the statement of cash flows under Topic 230. The amendments in ASU No. 2016-15 address eight specific cash flow issues and apply to all entities that are required to present a statement of cash flows under Topic 230. The provisions of ASU No. 2016-15 must be applied retrospectively to all periods presented with limited exceptions. For public companies, the amendments in ASU No. 2016-15 are effective for fiscal years beginning after December 15, 2017, and interim periods within those years. Early adoption is permitted, including adoption in an interim period. The Company does not expect the adoption of ASU No. 2016-15 to have a material impact on its consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, "Leases (Topic 842)," which requires that lessees recognize assets and liabilities for leases with lease terms greater than twelve months in the statement of financial position. ASU No. 2016-02 also requires additional disclosures to help users of financial statements better understand the amount, timing and uncertainty of cash flows arising from leases. The provisions of ASU No. 2016-02 are to be applied using a modified retrospective approach, and are effective for fiscal years beginning after December 15, 2018, including interim reporting periods within that reporting period. Early adoption is permitted. The Company is currently evaluating the impact that the adoption of ASU No. 2016-02 will have on its consolidated financial statements, but the Company expects that most existing operating lease commitments will be recognized as operating lease obligations and right-of-use assets as a result of adoption. In May 2014, the FASB issued ASU No. 2014-09, "Revenue from Contracts with Customers (Topic 606)," related to revenue recognition. The underlying principle of the new standard is that a business or other organization will recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects what it expects in exchange for the goods or services. The standard also requires more detailed disclosures and provides additional guidance for transactions that were not addressed completely in prior accounting guidance. The ASU permits the use of either the retrospective or modified retrospective (cumulative-effect) transition method of adoption. ASU No. 2015-14, "Deferral of the Effective Date," was issued in August 2015 to defer the effective date of ASU No. 2014-09 for public companies until annual reporting periods beginning after December 15, 2017. Early adoption is permitted for annual reporting periods beginning after December 15, 2016. In 2016, the FASB issued ASU No. 2016-08, “Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net),” ASU No. 2016-10, “Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing,” ASU No. 2016-12, "Revenue from Contracts with Customers (Topic 606), Narrow-Scope Improvements and Practical Expedients," and ASU No. 2016-20, "Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers," which provide supplemental adoption guidance and clarification to ASU No. 2014-09. ASU No. 2016-08, ASU No. 2016-10, ASU No. 2016-12 and ASU No. 2016-20 must be adopted concurrently with the adoption of ASU No. 2014-09. The Company continues to evaluate the impact of these ASU's on its consolidated financial statements and disclosures, and plans to adopt these ASU's in the first quarter of 2018 using the modified retrospective transition method.

Standards Updates Issued Not Yet Effective

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." Under the new guidance, employers must present the service cost component of the net periodic benefit cost in the same income statement line item(s) as other employee compensation costs arising from services rendered during the period. In addition, only the service cost component will be eligible for capitalization in assets. The other components of net periodic benefit cost must be reported separately from the line item(s) that includes the service cost component and outside of any subtotal of operating income, if one is presented. Employers will have to disclose the line(s) used to present the other components of net periodic benefit cost, if the components are not presented separately in the income statement. The guidance on the income statement presentation of the components of net periodic benefit cost must be applied retrospectively, while the guidance limiting the capitalization of net periodic benefit cost in assets to the service cost component must be applied prospectively. For public business entities, the guidance is effective for fiscal years beginning after December 15, 2017, and interim periods within those years. Early adoption is permitted as of the beginning of an annual period for which interim financial statements have not been issued. The Company is currently evaluating the impact the adoption of ASU No. 2017-07 will have on its consolidated financial statements.

In August 2016, the FASB issued ASU No. 2016-15, "Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments," to reduce the existing diversity in practice related to how certain cash receipts and cash payments are presented and classified in the statement of cash flows under Topic 230. The amendments in ASU No. 2016-15 address eight specific cash flow issues and apply to all entities that are required to present a statement of cash flows under Topic 230. The provisions of ASU No. 2016-15 must be applied retrospectively to all periods presented with limited exceptions. For public companies, the amendments in ASU No. 2016-15 are effective for fiscal years beginning after December 15, 2017, and interim periods within those years. Early adoption is permitted, including adoption in an interim period. The Company does not expect the adoption of ASU No. 2016-15 to have a material impact on its consolidated financial statements.

In February 2016, the FASB issued ASU No. 2016-02, "Leases (Topic 842)," which requires that lessees recognize assets and liabilities for leases with lease terms greater than twelve months in the statement of financial position. ASU No. 2016-02 also requires additional disclosures to help users of financial statements better understand the amount, timing and uncertainty of cash flows arising from leases. The provisions of ASU No. 2016-02 are to be applied using a modified retrospective approach, and are effective for fiscal years beginning after December 15, 2018, including interim reporting periods within that reporting period. Early adoption is permitted. The Company is currently evaluating the impact that the adoption of ASU No. 2016-02 will have on its consolidated financial statements, but the Company expects that most existing operating lease commitments will be recognized as operating lease obligations and right-of-use assets as a result of adoption.

In May 2014, the FASB issued ASU No. 2014-09, "Revenue from Contracts with Customers (Topic 606)," related to revenue recognition. The underlying principle of the new standard is that a business or other organization will recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects what it expects in exchange for the goods or services. The standard also requires more detailed disclosures and provides additional guidance for transactions that were not addressed completely in prior accounting guidance. The ASU permits the use of either the retrospective or modified retrospective (cumulative-effect) transition method of adoption. ASU No. 2015-14, "Deferral of the Effective Date," was issued in August 2015 to defer the effective date of ASU No. 2014-09 for public companies until annual reporting periods beginning after December 15, 2017. Early adoption is permitted for annual reporting periods beginning after December 15, 2016. In 2016, the FASB issued ASU No. 2016-08, “Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net),” ASU No. 2016-10, “Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing,” ASU No. 2016-12, "Revenue from Contracts with Customers (Topic 606), Narrow-Scope Improvements and Practical Expedients," and ASU No. 2016-20, "Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers," which provide supplemental adoption guidance and clarification to ASU No. 2014-09. ASU No. 2016-08, ASU No. 2016-10, ASU No. 2016-12 and ASU No. 2016-20 must be adopted concurrently with the adoption of ASU No. 2014-09. The Company continues to evaluate the impact of these ASU's on its consolidated financial statements and disclosures, and plans to adopt these ASU's in the first quarter of 2018 using the modified retrospective transition method.