Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:
Net income	$ 41,275	$ 19,944
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation	19,841	17,554
Amortization	2,358	2,021
Deferred income taxes	6,674	4,338
(Gain) loss on the sale of property, plant and equipment	541	(1,226)
Asset impairments	0	3,854
Thailand flood insurance recovery	(550)	0
Stock-based compensation expense	3,680	3,420
Excess tax benefits from stock-based compensation	(538)	(184)
Changes in operating assets and liabilities, net of effects from businss acquisition:
Accounts receivable	60,259	5,238
Inventories	(24,738)	(12,150)
Prepaid expenses and other assets	(5,673)	5,578
Accounts payable	(21,060)	20,254
Accrued liabilities	6,805	(3,597)
Income taxes	(3,180)	(3,826)
Net cash provided by operations	85,694	61,218
Cash flows from investing activities:
Proceeds from sales and redemptions of investments	57	25
Additions to property, plant and equipment	(29,442)	(11,870)
Proceeds from the sale of property, plant and equipment	202	1,660
Additions to purchased software	(855)	(1,441)
Business acquisition, net of cash acquired	750	(19,270)
Thailand flood property insurance proceeds	550	0
Other	359	0
Net cash used in investing activities	(28,379)	(30,896)
Cash flows from financing activities:
Proceeds from stock options exercised	10,768	5,767
Excess tax benefits from stock-based compensation	538	184
Principal payments on capital lease obligations	(281)	(240)
Share repurchases	(11,895)	(21,247)
Net cash used in financing activities	(870)	(15,536)
Effect of exchange rate changes	(131)	(463)
Net increase in cash and cash equivalents	56,314	14,323
Cash and cash equivalents at beginning of year	345,555	384,579
Cash and cash equivalents at end of period	$ 401,869	$ 398,902