Condensed Consolidated Balance Sheets (USD $) In Thousands	Sep. 24, 2011	Dec. 25, 2010
Current assets:
Cash and cash equivalents	$ 51,146	$ 45,921	[1]
Short-term investments	50,540	52,254	[1]
Accounts receivable, net	50,037	66,801	[1]
Inventories:
Raw materials and purchased parts	46,611	34,922	[1]
Work in process	18,658	17,470	[1]
Finished goods	18,916	10,832	[1]
Total inventories	84,185	63,224	[1]
Deferred income taxes	6,384	5,991	[1]
Other current assets	6,218	6,026	[1]
Total current assets	248,510	240,217	[1]
Property, plant and equipment, at cost:
Land and land improvements	12,187	12,057	[1]
Buildings and building improvements	31,422	31,117	[1]
Machinery and equipment	38,895	41,630	[1]
Property plant and equipment, gross	82,504	84,804	[1]
Less accumulated depreciation and amortization	(44,257)	(45,000)	[1]
Net property, plant and equipment	38,247	39,804	[1]
Goodwill	59,478	58,498	[1]
Intangible assets, net	23,789	26,523	[1]
Other assets	1,060	1,001	[1]
Total assets	371,084	366,043	[1]
Current liabilities:
Accounts payable	22,465	18,198	[1]
Accrued compensation and benefits	14,541	16,944	[1]
Accrued warranty	6,284	5,016	[1]
Customer advances	574	767	[1]
Deferred profit	5,751	14,834	[1]
Income taxes payable	2,457	8,802	[1]
Other accrued liabilities	6,973	6,973	[1]
Total current liabilities	59,045	71,534	[1]
Other accrued liabilities	6,265	5,931	[1]
Deferred income taxes	13,148	13,853	[1]
Commitments and contingencies			[1]
Stockholders' equity:
Preferred stock, $1 par value; 1,000 shares authorized, none issued			[1]
Common stock, $1 par value; 60,000 shares authorized, 24,161 shares issued and outstanding in 2011 and shares 23,989 in 2010	24,161	23,989	[1]
Paid-in capital	76,140	71,799	[1]
Retained earnings	189,793	179,134	[1]
Accumulated other comprehensive income (loss)	2,532	(197)	[1]
Total stockholders' equity	292,626	274,725	[1]
Total liabilities and stockholders' equity	$ 371,084	$ 366,043	[1]

[1] Derived from December 25, 2010 audited financial statements.