Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands	Jul. 02, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 31,890	$ 109,520
Short-term investments	43,171	4,994
Trade, note and other accounts receivable, net of allowances of $55 at both July 2, 2011 and December 31, 2010	26,360	25,911
Inventories	19,190	20,671
Prepaid expenses and other current assets	7,084	6,630
Deferred income tax assets	3,445	3,124
Total current assets	131,140	170,850
Property, plant and equipment, net	15,301	13,918
Long-term investments	48,226	22,866
Goodwill	18,389	18,389
Other intangible assets, net of amortization of $2,073 at July 2, 2011 and $1,801 at December 31, 2010	6,712	6,984
Deferred income taxes and other long-term assets	22,188	18,764
Total assets	241,956	251,771
Current liabilities:
Accounts payable	5,816	5,562
Accrued payroll and related liabilities	4,984	11,365
Other accrued liabilities	11,066	11,104
Customer advances	7,101	4,867
Total current liabilities	28,967	32,898
Other long-term liabilities	11,376	11,630
Stockholders' equity:
Common stock, $0.001 par value	23	23
Additional paid-in capital	143,625	139,824
Accumulated other comprehensive income	474	255
Retained earnings	57,491	67,141
Total stockholders' equity	201,613	207,243
Total liabilities and stockholders' equity	$ 241,956	$ 251,771