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Nature of Operations and Summary of Significant Accounting Policies - Supplemental Cash Flow Information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 28, 2019
Dec. 29, 2018
Dec. 30, 2017
Accounting Policies [Abstract]      
Cash Paid for Interest $ 12,344 $ 7,550 $ 2,624
Cash Paid for Income Taxes, Net of Refunds 24,533 25,654 20,559
Non-Cash Investing Activities:      
Fair value of assets of acquired 207,223 0 242,399
Cash paid for acquired businesses (179,693) 0 (206,785)
Liabilities Assumed of Acquired Businesses 27,530 0 35,614
Non-cash additions to property, plant, and equipment 626 917 4,620
Non-Cash Financing Activities:      
Issuance of Company common stock upon vesting of RSUs 4,100 4,231 3,192
Dividends declared but unpaid $ 2,628 $ 2,444 $ 2,316