SIGNIFICANT ACCOUNTING POLICIES AND ESTIMATES (Policies)	6 Months Ended
Jun. 30, 2019
Accounting Policies [Abstract]
Accounting Standards Not Yet Adopted in this Report	Recent Accounting Developments ASU 2016-13. In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments that will change how companies measure credit losses for most financial assets and certain other instruments that aren’t measured at fair value through net income. The standard will replace today’s “incurred loss” approach with an “expected loss” model for instruments measured at amortized cost. For available-for-sale debt securities, entities will be required to record allowances rather than reduce the carrying amount. The amendments in this update will be effective for annual periods beginning after December 15, 2019 and interim periods within those annual periods. Early adoption is permitted for annual periods beginning after December 15, 2018. The Company is evaluating the effect of this standard on our consolidated financial statements. ASU 2016-02. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which replaced the existing lease guidance. The new standard is intended to provide enhanced transparency and comparability by requiring lessees to record right-of-use assets and corresponding lease liabilities on the balance sheet. Additional disclosure requirements include qualitative disclosures along with specific quantitative disclosures with the objective of enabling users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. ASU 2016-02 is effective for the Company for annual reporting periods beginning after December 15, 2018, including interim periods within those fiscal years, with early adoption permitted. As part of our assessment we have created additional internal controls over financial reporting and made changes in business practices and processes related to the ASU. Key has elected the new prospective “Comparatives Under 840” transition method as defined in ASU 2018-11 and adopted the new standard as of January 1, 2019. As part of the adoption, the Company elected several practical expedients which, for contracts that existed at the time of the adoption, allowed the Company to not reassess whether existing contracts are or contained leases, classification of a lease (i.e., operating leases will remain operating leases), initial direct costs and land easement arrangements. As part of the adoption, the Company also made several accounting policy elections which allow the Company to not apply the standard to short term leases as well as to choose not to separate non-lease components from lease components and instead account for all components as a single lease component. The adoption of this standard did not have an impact on our consolidated statement of operations or consolidated statement of cash flows and had an immaterial impact on our consolidated balance sheet. Right of use assets obtained in exchange for operating leases liabilities was $4.1 million at the time of the adoption of the standard.

Recent Accounting Developments

ASU 2016-13. In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments that will change how companies measure credit losses for most financial assets and certain other instruments that aren’t measured at fair value through net income. The standard will replace today’s “incurred loss” approach with an “expected loss” model for instruments measured at amortized cost. For available-for-sale debt securities, entities will be required to record allowances rather than reduce the carrying amount. The amendments in this update will be effective for annual periods beginning after December 15, 2019 and interim periods within those annual periods. Early adoption is permitted for annual periods beginning after December 15, 2018. The Company is evaluating the effect of this standard on our consolidated financial statements.

ASU 2016-02. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which replaced the existing lease guidance. The new standard is intended to provide enhanced transparency and comparability by requiring lessees to record right-of-use assets and corresponding lease liabilities on the balance sheet. Additional disclosure requirements include qualitative disclosures along with specific quantitative disclosures with the objective of enabling users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. ASU 2016-02 is effective for the Company for annual reporting periods beginning after December 15, 2018, including interim periods within those fiscal years, with early adoption permitted. As part of our assessment we have created additional internal controls over financial reporting and made changes in business practices and processes related to the ASU. Key has elected the new prospective “Comparatives Under 840” transition method as defined in ASU 2018-11 and adopted the new standard as of January 1, 2019. As part of the adoption, the Company elected several practical expedients which, for contracts that existed at the time of the adoption, allowed the Company to not reassess whether existing contracts are or contained leases, classification of a lease (i.e., operating leases will remain operating leases), initial direct costs and land easement arrangements. As part of the adoption, the Company also made several accounting policy elections which allow the Company to not apply the standard to short term leases as well as to choose not to separate non-lease components from lease components and instead account for all components as a single lease component. The adoption of this standard did not have an impact on our consolidated statement of operations or consolidated statement of cash flows and had an immaterial impact on our consolidated balance sheet. Right of use assets obtained in exchange for operating leases liabilities was $4.1 million at the time of the adoption of the standard.