Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 27, 2015	Dec. 27, 2014
Current assets:
Cash and cash equivalents	$ 72,588	$ 70,885
Short-term investments	1,453	1,155
Accounts receivable, net	69,784	70,490
Inventories:
Raw materials and purchased parts	27,780	26,239
Work in process	18,766	19,044
Finished goods	6,667	3,917
	53,213	49,200
Refundable income taxes	114	1,012
Deferred income taxes	3,490	4,406
Other current assets	$ 8,091	7,351
Current assets of discontinued operations (Note 2)		10,318
Total current assets	$ 208,733	214,817
Property, plant and equipment, at cost:
Land and land improvements	11,433	11,762
Buildings and building improvements	31,265	31,065
Machinery and equipment	32,254	32,356
	74,952	75,183
Less accumulated depreciation and amortization	(43,994)	(43,329)
Net property, plant and equipment	30,958	31,854
Goodwill	61,295	63,132
Intangible assets, net	30,160	33,087
Other assets	5,633	5,928
	336,779	348,818
Current liabilities:
Accounts payable	28,681	25,119
Accrued compensation and benefits	13,508	18,687
Accrued warranty	3,308	4,846
Deferred profit	7,648	6,941
Income taxes payable	4,516	3,133
Other accrued liabilities	$ 6,099	6,969
Current liabilities of discontinued operations (Note 2)		2,783
Total current liabilities	$ 63,760	68,478
Accrued retirement benefits	15,215	13,180
Deferred income taxes	9,687	11,062
Noncurrent income tax liabilities	7,046	7,321
Other accrued liabilities	$ 1,904	1,003
Noncurrent liabilities of discontinued operations (Note 2)		$ 706
Commitments and contingencies
Stockholders' equity:
Preferred stock, $1 par value; 1,000 shares authorized, none issued
Common stock, $1 par value; 60,000 shares authorized, 26,108 shares issued and outstanding in 2015 and 25,692 shares in 2014	$ 26,108	$ 25,692
Paid-in capital	101,207	97,938
Retained earnings	128,231	134,152
Accumulated other comprehensive loss	(16,379)	(10,714)
Total stockholders' equity	239,167	247,068
	$ 336,779	$ 348,818