Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jul. 02, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 15,649	$ 34,681
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	21,365	8,714
Amortization of discount on convertible subordinated notes	12	2,081
Gain on sale of assets	(5,323)	(619)
Foreign currency gain		(7,198)
Provision for losses on inventories	3,790	2,177
Stock-based compensation expense	4,092	3,170
Provision for doubtful accounts	191	319
Loss on disposal of property and equipment	130	94
Deferred income taxes	1,361	278
Increase (decrease) in cash, net of acquisition, due to changes in:
Accounts and notes receivable	(3,915)	(1,185)
Inventories	(1,803)	(12,547)
Prepaid expenses and other assets	448	(217)
Accounts payable	703	(7,049)
Accrued payroll and related expenses	(6,604)	(6,077)
Accrued expenses and other liabilities	(1,963)	2,036
Other long-term liabilities	180	185
Net cash provided by operating activities	28,313	18,843
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(6,186)	(5,209)
Restricted cash	9,412
Gain on sale of assets	5,323	619
Business acquisition, net of cash acquired	(8,939)
Purchase of marketable securities	(1,206)	(74,731)
Proceeds from the sale of marketable securities	1,161	86,330
Net cash provided by (used in) investing activities	(435)	7,009
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from long-term debt		2,440
Repayment of long-term debt and obligations under capital leases	(15,420)	(87)
Proceeds from short-term borrowings	5,207	14,812
Repayment of short-term borrowings	(22,250)	(17,923)
Proceeds from the issuance of common stock under employee plans	2,403	2,426
Tax withholding payments related to net share settlement of equity awards	(3,053)	(3,435)
Net cash used in financing activities	(33,113)	(1,767)
Impact of foreign exchange rate changes on cash balances	(748)	1,574
Net increase (decrease) in cash and cash equivalents	(5,983)	25,659
Cash and cash equivalents at beginning of period	55,701	90,992
Cash and cash equivalents at end of period	49,718	116,651
Cash paid during the period for:
Interest	3,501	1,758
Income taxes, net	2,837	1,124
Property and equipment accrued in accounts payable	$ 138	$ 122