Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 29, 2014	Jun. 30, 2013
NET CASH PROVIDED BY OPERATING ACTIVITIES	$ 1,541	$ 15,366
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to property, plant and equipment	(55,478)	(17,140)
Proceeds from life insurance policy	352	297
Proceeds from sales and maturities of investments	2,800	2,800
Purchase of investments	(2,800)	(2,800)
Other	164	2
NET CASH USED IN INVESTING ACTIVITIES	(54,962)	(16,841)
CASH FLOWS FROM FINANCING ACTIVITIES:
Cash dividends paid	(9,776)	0
Cash paid for common stock repurchase	(12,979)	0
Proceeds from exercise of stock options	3,471	1,133
Excess tax benefits from exercise of stock options	26	324
NET CASH (USED IN) PROVIDED BY FINANCING ACTIVITIES	(19,258)	1,457
Effect of exchange rate changes on cash	75	(810)
Net decrease in cash and cash equivalents	(72,604)	(828)
Cash and cash equivalents at the beginning of the period	199,301	203,364
Cash and cash equivalents at the end of period	$ 126,697	$ 202,536