Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jan. 01, 2016	Jan. 02, 2015	Jan. 03, 2014
Cash flows from operating activities:
Net income (loss)	$ (7,594)	$ 55,458	$ 36,267
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	44,632	37,197	35,966
Debt related charges included in interest expense	11,320	773	6,366
Inventory step-up amortization	22,986	260	0
Stock-based compensation	9,376	13,186	14,101
Non-cash (gain) loss on cost and equity method investments, net	(275)	4,370	(694)
Other non-cash (gains) losses, net	1,093	(3,214)	255
Deferred income taxes	(10,298)	531	(29,856)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	3,684	(11,731)	7,379
Inventories	(25,752)	(6,726)	(11,508)
Prepaid expenses and other assets	(1,861)	(3,281)	(353)
Accounts payable	3,129	(970)	1,307
Accrued expenses	(28,605)	1,214	(1,176)
Income taxes payable	(9,906)	2,949	(2,687)
Net cash provided by operating activities	12,479	81,276	56,755
Cash flows from investing activities:
Proceeds from sale of orthopaedic product lines	0	2,655	4,746
Acquisition of property, plant and equipment	(44,616)	(24,827)	(18,858)
Proceeds from sale of property, plant and equipment	746	4	300
Proceeds from sale (purchase of) cost and equity method investments, net	(6,300)	2,248	(3,732)
Acquisitions, net of cash acquired	(423,389)	(16,002)	0
Other investing activities, net	0	0	(740)
Net cash used in investing activities	(473,559)	(35,922)	(18,284)
Cash flows from financing activities:
Principal payments of long-term debt	(1,232,175)	(10,000)	(458,282)
Proceeds from issuance of long-term debt, net of discount	1,749,750	0	425,000
Issuance of common stock	6,583	8,278	12,807
Payment of debt issuance costs	(45,933)	0	(2,802)
Purchase of non-controlling interests	(9,875)	0	0
Other financing activities, net	(440)	(655)	(81)
Net cash provided by (used in) financing activities	467,910	(2,377)	(23,358)
Effect of foreign currency exchange rates on cash and cash equivalents	(1,176)	(1,618)	68
Net increase in cash and cash equivalents	5,654	41,359	15,181
Cash and cash equivalents, beginning of year	76,824	35,465	20,284
Cash and cash equivalents, end of year	$ 82,478	$ 76,824	$ 35,465