Nature of Operations and Summary of Significant Accounting Policies - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	6 Months Ended
	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