Subsequent Events	6 Months Ended
	Jun. 28, 2020
Subsequent Events [Abstract]
Subsequent Events	Subsequent EventsWe completed the sale of Grass Valley to Black Dragon Capital on July 2, 2020 for gross cash consideration of $120.0 million, or approximately $67.0 million net of cash delivered with the business. The cash consideration is subject to certain working capital adjustments. The sale also included deferred consideration consisting of a $175.0 million five-year seller’s note, up to $88 million in PIK (payment-in-kind) interest on the seller’s note over its five-year term, and $178.0 million in potential earn-out payments. As part of the transaction, we also invested $3.0 million for a 9% equity interest in Grass Valley with the right to put the equity back to Black Dragon Capital at any time on or before October 31, 2020. We deconsolidated Grass Valley as of July 2, 2020 and are accounting for our equity interest under the cost method.