Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 26, 2015	Dec. 27, 2014
Current assets:
Cash and cash equivalents	$ 89,260	$ 70,885	[1]
Short-term investments	1,467	1,155	[1]
Accounts receivable, net	56,020	70,490	[1]
Inventories:
Raw materials and purchased parts	25,465	26,239	[1]
Work in process	18,105	19,044	[1]
Finished goods	7,300	3,917	[1]
Net inventory	50,870	49,200	[1]
Refundable income taxes	157	1,012	[1]
Deferred income taxes	3,254	4,406	[1]
Other current assets	$ 5,667	7,351	[1]
Current assets of discontinued operations (Note 2)		10,318	[1]
Total current assets	$ 206,695	214,817	[1]
Property, plant and equipment, at cost:
Land and land improvements	11,442	11,762	[1]
Buildings and building improvements	31,169	31,065	[1]
Machinery and equipment	30,705	32,356	[1]
Net property, plant and equipment	73,316	75,183	[1]
Less accumulated depreciation and amortization	(41,372)	(43,329)	[1]
Net property, plant and equipment	31,944	31,854	[1]
Goodwill	60,860	63,132	[1]
Intangible assets, net	27,367	33,087	[1]
Other assets	5,620	5,928	[1]
Assets	332,486	348,818	[1]
Current liabilities:
Accounts payable	25,848	25,119	[1]
Accrued compensation and benefits	16,502	18,687	[1]
Accrued warranty	3,991	4,846	[1]
Deferred profit	5,732	6,941
Income taxes payable	4,960	3,133	[1]
Other accrued liabilities	$ 6,134	6,969	[1]
Current liabilities of discontinued operations (Note 2)		2,783	[1]
Total current liabilities	$ 63,167	68,478	[1]
Accrued retirement benefits	14,793	13,180	[1]
Deferred income taxes	9,793	11,062	[1]
Noncurrent income tax liabilities	6,542	7,321	[1]
Other accrued liabilities	$ 1,865	1,003	[1]
Noncurrent liabilities of discontinued operations (Note 2)		$ 706	[1]
Commitments and contingencies
Stockholders' equity:
Preferred stock, $1 par value; 1,000 shares authorized, none issued			[1]
Common stock, $1 par value; 60,000 shares authorized, 26,128 shares issued and outstanding in 2015 and 25,692 shares in 2014	$ 26,128	$ 25,692
Paid-in capital	102,922	97,938	[1]
Retained earnings	127,777	134,152	[1]
Accumulated other comprehensive loss	(20,501)	(10,714)
Total stockholders' equity	236,326	247,068	[1]
Total Liabilities and Stockholders Equity	$ 332,486	$ 348,818

[1] Derived from December 27, 2014 audited financial statements