Income Taxes (Details) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
Mar. 27, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Taxes
Effective tax rate (as a percent)		15.60%		7.70%
Provision for income taxes		$ (7,384)	$ 72	$ (7,834)	$ 194
Unrecognized tax benefits		18,700	$ 13,600	$ 18,700	$ 13,600
CARES net operating losses carryback period	5 years
Provision for income taxes from CARES		$ (400)

Duration of operating loss carrybacks under the Coronavirus Aid Relief And Economic Security Act.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations from the Coronavirus Aid Relief And Economic Security Act.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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