Basis of Presentation (Details) - USD ($) $ in Thousands		9 Months Ended
	Jan. 01, 2019	Sep. 30, 2019	Dec. 31, 2018
ASC 842 Implementation [Abstract]
Lease, Practical Expedients, Package [true false]	true
Operating Lease, Liability	$ 24,792	$ 27,556
Separation of Lease and Nonlease Components [Policy Text Block]		We have also elected the practical expedient to not separate lease and non-lease components for the majority of our leases and the election to keep leases with an initial term of 12 months or less off of the balance sheet.
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	0
Operating Lease, Right-of-Use Asset	$ 22,066	$ 24,520	$ 0