Unaudited Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Apr. 03, 2016	Mar. 29, 2015
Cash flows from operating activities:
Net income	$ 16,589	$ 8,011
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	8,508	9,215
Purchase premium amortization/discount accretion on investments, net	20	(30)
Non-cash stock-based compensation	4,411	4,348
Income tax impact associated with stock option exercises	(24)	(262)
Excess tax benefit from stock-based compensation	(165)	(88)
Deferred income taxes	489	(386)
Changes in assets and liabilities:
Accounts receivable	72,221	20,945
Inventories	(2,189)	21,934
Prepaid expenses and other assets	3,784	120
Accounts payable	(16,101)	(38,939)
Accrued employee compensation	(6,297)	(1,680)
Other accrued liabilities	(18,591)	(19,860)
Deferred revenue	(2,726)	(5,819)
Income taxes payable	1,930	2,126
Net Cash Provided by (Used in) Operating Activities	61,859	(365)
Cash flows from investing activities:
Purchases of short-term investments	(30,148)	(24,961)
Proceeds from sales and maturities of short-term investments	20,143	40,000
Purchase of property and equipment	(2,056)	(5,633)
Net Cash Provided by (Used in) Investing Activities	(12,061)	9,406
Cash flows from financing activities:
Purchase and retirement of common stock	(10,356)	(8,572)
Proceeds from exercise of stock options	3,661	3,108
Proceeds from issuance of common stock under employee stock purchase plan	1,645	1,502
Excess tax benefit from stock-based compensation	165	88
Net Cash Used in Financing Activities	(4,885)	(3,874)
Net increase in cash and cash equivalents	44,913	5,167
Cash and cash equivalents, at beginning of period	181,945	141,234
Cash and cash equivalents, at end of period	$ 226,858	$ 146,401