CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016
Cash flows from operating activities:
Net income	$ 70,726	$ 61,514
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	28,418	26,752
Share-based compensation	6,043	5,912
Deferred income taxes	(2,377)	2,585
Loss on disposals of plant and equipment	229	200
Gain on equity investment	(5,165)	0
Foreign exchange (income)/expense	(296)	(637)
Changes in assets and liabilities, net of acquisitions
Receivables	8,449	(22,088)
Inventory	(35,758)	(14,910)
Accounts payable and accrued expenses	(17,942)	9,333
Income taxes	(4,895)	3,451
Employee benefit plans	(2,699)	(4,825)
Other, net	(4,369)	3,578
Net cash flows from operating activities	40,364	70,865
Cash flows from investing activities:
Additions to property, plant, and equipment	(22,517)	(30,109)
Proceeds from sale of property, plant, and equipment	207	5,839
Cash paid for acquisitions, net of cash acquired	(51,783)	(1,007)
Other, net	149	174
Net cash flows from investing activities	(73,944)	(25,103)
Cash flows from financing activities:
Proceeds from issuance of debt	176,024	63,984
Repayment of debt	(170,430)	(94,610)
Proceeds from issuance of common stock	3,770	3,192
Purchases of common stock	(3,263)	(6,193)
Dividends paid	(15,245)	(14,483)
Purchase of redeemable noncontrolling shares	(5,047)	0
Net cash flows from financing activities	(14,191)	(48,110)
Effect of exchange rate changes on cash	3,569	(232)
Net change in cash and equivalents	(44,202)	(2,580)
Cash and equivalents at beginning of period	104,331	81,561
Cash and equivalents at end of period	60,129	78,981
Cash paid for income taxes, net of refunds	21,547	16,673
Cash paid for interest	7,138	7,139
Additions to property, plant, and equipment, not yet paid	427	591
Payable to seller of Bombas Leao	$ 0	$ 24