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Nature of Operations and Summary of Significant Accounting Policies - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Oct. 02, 2021	Sep. 26, 2020
Accounting Policies [Abstract]
Cash Paid for Interest	$ 3,091	$ 5,518
Cash Paid for Income Taxes, Net of Refunds	19,320	9,953
Non-Cash Investing Activities:
Fair value of assets acquired	185,424	9,295
Cash paid for acquired businesses	(149,961)	(7,565)
Liabilities Assumed of Acquired Businesses	35,463	1,730
Purchases of property, plant, and equipment in accounts payable	914	101
Non-Cash Financing Activities:
Issuance of Company common stock upon vesting of restricted stock units	3,841	4,557
Dividends declared but unpaid	$ 2,901	$ 2,762

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Future cash outflow to pay for purchases of fixed assets that have occurred.

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