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Nature of Operations and Summary of Significant Accounting Policies - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands | 6 Months Ended
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Jul. 04, 2015 | Jun. 28, 2014
Non-Cash Investing Activities: |  |
Fair Value of Assets Acquired | $ 0 | $ 5,602
Cash Paid for Acquired Businesses | 0 | (3,444)
Liabilities Assumed of Acquired Businesses | 0 | 2,158
Non-Cash Financing Activities: |  |
Issuance of Company Common Stock | 2,967 | 2,718
Dividends Declared but Unpaid | $ 1,852 | $ 1,640

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