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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. 29, 2018
Dec. 30, 2017
Dec. 31, 2016
Accounting Policies [Abstract]      
Cash Paid for Interest $ 7,550 $ 2,624 $ 1,183
Cash Paid for Income Taxes, Net of Refunds 25,654 20,559 15,632
Non-Cash Investing Activities:      
Estimated post-closing adjustment 397 0 0
Fair value of assets of acquired 0 242,048 84,969
Cash paid for acquired businesses 0 (206,950) (58,894)
Liabilities Assumed of Acquired Businesses 0 35,098 26,075
Non-cash additions to property, plant, and equipment 917 4,620 379
Non-Cash Financing Activities:      
Issuance of Company common stock upon vesting of RSUs 4,231 3,192 3,463
Dividends declared but unpaid $ 2,444 $ 2,316 $ 2,078