Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 01, 2016	Jan. 02, 2015	Jan. 03, 2014
Noncash investing and financing activities:
Common stock contributed to 401(k) Plan	$ 3,920	$ 4,341	$ 2,477
Property, plant and equipment purchases included in accounts payable	7,401	2,926	2,103
Common stock issued in connection with Lake Region Medical acquisition	245,368	0	0
Replacement stock options issued in connection with Lake Region Medical acquisition	4,508	0	0
Purchase of non-controlling interests in subsidiaries included in accrued expenses	6,818	0	0
Cash paid during the year for:
Interest	13,057	3,521	4,989
Income taxes	6,312	13,565	44,165
Acquisition of noncash assets	2,013,604	22,434	0
Liabilities assumed	$ 1,340,339	$ 6,432	$ 0