Income Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 28, 2020	Mar. 30, 2019	Dec. 31, 2018	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Effective rate for continuing operations (percent)	123.80%	39.60%
Income tax expense	$ 1,197	$ 10,349	$ (10,058)
Discrete adjustments	800	1,300
Interest on income taxes expense	800	400
Tax benefit from stock option exercise		1,100
Other adjustments		$ 200
Unrecognized tax benefits	$ 19,800			$ 20,200