Leases Leases (Policies)	3 Months Ended
Mar. 31, 2019
Leases [Abstract]
Lessee, Leases [Policy Text Block]	As an accounting policy election, the Company does not apply the recognition requirements of Topic 842 to short-term leases in all of its underlying asset categories. The Company recognizes short-term lease payments in earnings on a straight-line basis over the lease term, and variable lease payments in the period in which the obligation for those payments is incurred.

Disclosure of accounting policy for leasing arrangement entered into by lessee.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918666-209980

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Balance Type:	na
Period Type:	duration