Leases - Topic 842 Adjustments (Details) - USD ($) $ in Thousands	Dec. 28, 2019	Dec. 30, 2018	Dec. 29, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property, plant and equipment, net		$ 168,434	$ 342,820
Operating lease right-of-use assets	$ 68,081	78,855
Other non-current assets	27,182	9,965	14,849
Accrued expenses and other current liabilities		124,548	131,891
Long-term financing lease obligation	2,394	0	193,538
Other long-term liabilities	69,194	63,175	68,082
Operating lease liabilities - short-term	18,106	19,209	0
Operating lease liabilities - long-term	64,210	62,467
Accumulated deficit	$ 1,319,891	933,273	$ 956,970
ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property, plant and equipment, net		(174,386)
Operating lease right-of-use assets		78,855
Other non-current assets		(4,884)
Accrued expenses and other current liabilities		(7,343)
Long-term financing lease obligation		(193,538)
Other long-term liabilities		(4,907)
Operating lease liabilities - short-term		19,209
Operating lease liabilities - long-term		62,467
Accumulated deficit		$ (23,697)