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Accounting Policies	3 Months Ended
Accounting Policies	Mar. 31, 2019
Accounting Policies [Abstract]
Accounting Policies	Accounting Policies Leases The following policy resulted from our adoption of the provisions of ASC Topic 842, “Leases,” effective January 1, 2019, as described above in “Accounting Pronouncements Adopted on January 1, 2019.” If we determine that an arrangement is or contains a lease, we recognize a right-of-use (ROU) asset and lease liability at the commencement date of the lease. ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. The operating lease ROU asset also includes any lease payments made and excludes lease incentives. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term. We have elected to not account for the lease and non-lease components separately for most of our asset classes with the exception of real-estate. We have also elected to exclude all lease agreements with an initial term of 12 months or less from the lease recognition requirements.