Condensed Consolidated Statements of Cash Flows - Unaudited - USD ($) $ in Thousands	9 Months Ended
	Sep. 29, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net income (loss)	$ 12,341	$ (1,972)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	74,584	67,414
Debt related amortization included in interest expense	8,850	5,387
Stock-based compensation	9,895	7,179
Other non-cash losses	10,666	1,938
Deferred income taxes	(6,821)	(12,519)
Changes in operating assets and liabilities:
Accounts receivable	(13,958)	12,510
Inventories	(20,259)	(10,010)
Prepaid expenses and other current assets	8,460	(4,663)
Accounts payable	12,905	4,885
Accrued expenses	4,191	(5,650)
Income taxes	14,716	7,300
Net cash provided by operating activities	115,570	71,799
Cash flows from investing activities:
Acquisition of property, plant and equipment	(34,059)	(46,968)
Purchase of cost and equity method investments	(1,316)	(2,917)
Other investing activities	673	(1,000)
Net cash used in investing activities	(34,702)	(50,885)
Cash flows from financing activities:
Principal payments of long-term debt	(156,526)	(28,750)
Proceeds from issuance of long-term debt	50,000	57,000
Proceeds from the exercise of stock options	17,074	723
Payment of debt issuance costs	(1,789)	(781)
Distribution of cash and cash equivalents to Nuvectra Corporation	0	(76,256)
Purchase of non-controlling interests	0	(6,818)
Other financing activities	(76)	(3,983)
Net cash used in financing activities	(91,317)	(58,865)
Effect of foreign currency exchange rates on cash and cash equivalents	1,970	468
Net decrease in cash and cash equivalents	(8,479)	(37,483)
Cash and cash equivalents, beginning of period	52,116	82,478
Cash and cash equivalents, end of period	$ 43,637	$ 44,995