Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net (loss) income	$ 1,890	$ (7,714)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	5,066	5,027
Change in deferred income tax provision	367	7,520
Stock-based compensation	1,912	1,624
Changes in assets and liabilities:
Accounts receivable, net	(9,037)	(15,820)
Inventories	439	433
Prepaid expenses and other assets	(361)	(3,367)
Accounts payable and accrued expenses (includes restructuring)	872	978
Accrued payroll obligations	1,976	(1,999)
Deferred income and allowances on sales to sell-through distributors	1,103	3,220
Other liabilities	(165)	155
Net cash provided by (used in) operating activities	4,062	(9,943)
Cash flows from investing activities:
Proceeds from sales or maturities of marketable securities	21,890	15,018
Purchase of marketable securities	(30,650)	(6,024)
Capital expenditures	(3,054)	(3,442)
Other investing activities, primarily time based software licenses	(4,194)	(1,082)
Net cash (used in) provided by investing activities	(16,008)	4,470
Cash flows from financing activities:
Net share settlement upon issuance of RSUs	(109)	(376)
Purchase of treasury stock	(2,452)	(1,558)
Net proceeds from issuance of common stock	1,465	2,491
Net cash (used in) provided by financing activities	(1,096)	557
Net (decrease) in cash and cash equivalents	(13,042)	(4,916)
Beginning cash and cash equivalents	118,536	141,423
Ending cash and cash equivalents	105,494	136,507
Supplemental disclosures of non-cash investing and financing activities:
Unrealized (loss) gain related to marketable securities, net, included in Accumulated other comprehensive loss	(75)	(65)
Income taxes paid, net of refunds	852	329
Distribution of deferred compensation from trust assets	$ 18	$ 65