Income Taxes Deferred Tax Summary (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Abstract]
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	$ 6,006	$ 4,535
Deferred Tax Liabilities, Noncurrent	(93,698)	(71,041)
Deferred Tax Liabilities, Net	$ (87,692)	$ (66,506)