CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017
Statement of Cash Flows [Abstract]
Payments of Debt Issuance Costs	$ (2,322)	$ 0
Cash flows from operating activities:
Net earnings	75,160	87,283
Adjustments to reconcile net earnings to net cash flows from operations:
Depreciation and amortization	41,657	41,754
Noncash loss on trading securities	229	188
Stock-based compensation	5,374	4,590
Defined benefit pension plan expense (benefit)	(1,159)	314
Contribution to defined benefit pension plan	(731)	(25,379)
(Gain)/loss on sale of property, plant and equipment	(287)	(64)
Equity in earnings of nonconsolidated subsidiaries	0	0
Deferred income taxes	2,500	7,347
Changes in assets and liabilities:
Receivables	10,664	(49,416)
Inventories	(20,592)	(24,963)
Prepaid expenses and other assets	(34,096)	(5,892)
Accounts payable	(18,645)	10,715
Accrued expenses	(10,523)	5,252
Other noncurrent liabilities	(480)	1,973
Income taxes refundable	(4,288)	2,028
Net cash flows from operating activities	53,658	55,730
Cash flows from investing activities:
Purchase of property, plant and equipment	(31,816)	(26,183)
Proceeds from sale of assets	64,393	890
Payments to Acquire Businesses, Net of Cash Acquired	(9,300)	0
Settlement of net investment hedges	(1,621)	5,123
Other, net	2,404	(2,467)
Net cash flows from investing activities	24,060	(22,637)
Cash flows from financing activities:
Proceeds/(payments) under short-term agreements	130	(369)
Principal payments on long-term borrowings	(495)	(434)
Dividends paid	(17,003)	(16,913)
Dividends to noncontrolling interest	(4,852)	(2,889)
Purchase of noncontrolling interest	(5,510)	0
Purchase of treasury shares	(43,999)	0
Proceeds from exercises under stock plans	5,711	10,168
Purchase of common treasury shares—stock plan exercises	(1,769)	(3,056)
Net cash flows from financing activities	165,065	(13,493)
Effect of exchange rate changes on cash and cash equivalents	(13,000)	16,106
Net change in cash and cash equivalents	229,783	35,706
Cash, cash equivalents, and restricted cash—beginning of year	492,805	412,516
Cash, cash equivalents, and restricted cash—end of period	722,588	448,222
Restructuring Costs	2,791	0
Asset Impairment Charges	$ 6,084	$ 0