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Nature of Operations and Summary of Significant Accounting Policies - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands | 3 Months Ended
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Apr. 03, 2021 | Mar. 28, 2020
Accounting Policies [Abstract] |  |
Cash Paid for Interest | $ 892 | $ 2,212
Cash Paid for Income Taxes, Net of Refunds | 5,344 | 4,698
Non-Cash Investing Activities: |  |
Non-cash additions to property, plant, and equipment | 169 | 128
Non-Cash Financing Activities: |  |
Issuance of Company common stock upon vesting of restricted stock units | 3,203 | 3,670
Dividends declared but unpaid | $ 2,894 | $ 2,753

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