Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 26, 2020	Dec. 28, 2019	Sep. 28, 2019
Assets:
Accounts Receivable, Allowance for Credit Loss, Current	$ 10,491	$ 8,802
Property, plant and equipment, accumulated depreciation	1,604,081	1,438,388
Intangible assets, accumulated amortization	$ 532,124	$ 482,442
Stockholders’ equity:
Common stock, par value (in usd per share)	$ 0.01	$ 0.01	$ 0.01
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	169,578,370	168,620,314
Treasury stock, shares	7,511,271	4,845,203

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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