Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2016	Mar. 28, 2015
Operating activities:
Net income	$ 19,289	$ 19,995
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	7,230	7,365
Amortization of intangibles	3,796	3,053
Stock-based compensation	2,204	$ 1,802
Loss on product line sale	1,391
Excess tax benefit on share-based compensation	(706)	$ (672)
Loss on sale of assets	27	105
Accounts receivable	(10,413)	(3,910)
Inventories	(3,484)	149
Accounts payable	3,716	(2,963)
Accrued expenses (including post-retirement)	3,500	2,689
Accrued payroll and severance	(9,351)	(8,894)
Accrued and deferred taxes	(5,312)	932
Prepaid expenses and other	(2,395)	3,579
Net cash provided by operating activities	9,492	$ 23,230
Investing activities:
Acquisition of businesses, net of cash acquired	(264,098)
Purchases of property, plant, and equipment	(9,139)	$ (12,279)
Proceeds from sale of assets	18	6
Net cash used in investing activities	(273,219)	(12,273)
Financing activities:
Proceeds from revolving credit facility	258,000	$ 7,000
Proceeds from term loan	125,000
Payments of revolving credit facility	(90,500)	$ (11,000)
Payments of term loan	(85,000)	$ (1,250)
Debt issuance costs	(1,700)
Cash dividends paid	(6,483)	$ (5,635)
Proceeds from exercise of stock options	3,710	1,768
Excess tax benefit on share-based compensation	706	672
Net cash provided by (used in) financing activities	203,733	(8,445)
Effect of exchange rate changes on cash and cash equivalents	4,072	(6,452)
Decrease in cash and cash equivalents	(55,922)	(3,940)
Cash and cash equivalents at beginning of period	328,786	297,571
Cash and cash equivalents at end of period	272,864	$ 293,631
Supplemental disclosure of non-cash investing activities:
Consideration payable upon certain Chinese regulatory approvals	$ 70,000