Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019
Cash Flows from Operating Activities:
Net income	$ 113,268	$ 26,824
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation expense from property, plant and equipment and financing leases	117,203	119,145
Amortization of intangible assets and deferred proceeds, net	17,286	17,271
Fair value adjustment of acquisition related contingent consideration	35,068	62,017
Impairment of property, plant and equipment	7,908	4,144
Deferred income taxes	5,302	5,254
Loss on sale of property, plant and equipment	3,656	5,474
Amortization of debt costs	778	1,032
Stock compensation expense	0	2,045
Change in current assets less current liabilities	69,975	(54,263)
Change in other noncurrent assets	16,360	12,581
Change in other noncurrent liabilities	(11,451)	2,611
Other	1,048	448
Total adjustments	263,133	177,759
Net cash provided by operating activities	376,401	204,583
Cash Flows from Investing Activities:
Additions to property, plant and equipment	(110,717)	(96,747)
Proceeds from the sale of property, plant and equipment	2,397	1,028
Investment in CONA Services LLC	(1,770)	(1,713)
Other distribution agreements	0	(4,654)
Net cash used in investing activities	(110,090)	(102,086)
Cash Flows from Financing Activities:
Payments on revolving credit facility	(280,000)	(376,339)
Borrowings under revolving credit facility	235,000	331,339
Payments on term loan facility and senior notes	(22,500)	(132,500)
Proceeds from issuance of senior notes	0	100,000
Payments of acquisition related contingent consideration	(31,999)	(18,784)
Cash dividends paid	(7,030)	(7,026)
Payments on financing lease obligations	(4,428)	(6,441)
Debt issuance fees	(145)	(305)
Net cash used in financing activities	(111,102)	(110,056)
Net increase (decrease) in cash during period	155,209	(7,559)
Cash at beginning of period	9,614	13,548
Cash at end of period	164,823	5,989
Significant non-cash investing and financing activities:
Additions to leased property under financing leases	61,121	0
Right-of-use assets obtained in exchange for operating lease obligations	38,317	39,213
Additions to property, plant and equipment accrued and recorded in accounts payable, trade	25,477	8,909
Class B Common Stock
Significant non-cash investing and financing activities:
Issuance of Class B Common Stock in connection with stock award	$ 0	$ 4,776