Income Taxes (Details) - USD ($) $ in Thousands		3 Months Ended
Sep. 27, 2017	Mar. 31, 2020	Mar. 31, 2019
Income Tax Examination [Line Items]
Current income tax		$ (9,718)	$ (15,934)
Net change in deferred taxes		2,678	5,916
Provision for income taxes		$ (7,040)	$ (10,018)
Estimated tax rate		30.00%	30.00%
Effective tax rate		30.00%	32.00%
Internal Revenue Service (IRS)
Income Tax Examination [Line Items]
Estimate of possible loss	$ 15,000

Effective Income Tax Rate Reconciliation, Estimated Tax Rate, Percent

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