Consolidated Variable Interest Entities - Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Sep. 27, 2020	Jun. 28, 2020	Mar. 29, 2020	Dec. 31, 2019
Assets
Total assets	$ 1,829,370	$ 1,428,962	$ 1,411,032	$ 1,382,958	$ 1,371,299
Liabilities and stockholders’ equity
Total liabilities	1,723,185	1,314,420	1,318,166	1,272,639	1,383,208
Total equity	73,949	79,525	58,436	78,150	(43,760)
Total liabilities and equity	1,829,370	$ 1,428,962	$ 1,411,032	$ 1,382,958	1,371,299
Variable Interest Entity, Primary Beneficiary
Assets
Total assets	145,664				127,742
Liabilities and stockholders’ equity
Total liabilities	96,318				80,151
Total equity	49,346				47,591
Total liabilities and equity	$ 145,664				$ 127,742