Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 26, 2015	Dec. 27, 2014
Current assets:
Cash and cash equivalents	$ 115,370	$ 70,885
Short-term investments	1,652	1,155
Accounts receivable, net	59,832	70,490
Inventories:
Raw materials and purchased parts	24,423	26,239
Work in process	20,124	19,044
Finished goods	6,801	3,917
Net inventory	51,348	49,200
Other current assets	$ 6,261	8,363
Current assets of discontinued operations (Note 2)		10,318
Total current assets	$ 234,463	210,411
Property plant and equipment, net	19,000	31,854
Goodwill	60,264	63,132
Intangible assets, net	25,297	33,087
Other assets	6,322	6,281
Total assets	345,346	344,765
Current liabilities:
Accounts payable	27,290	25,119
Accrued compensation and benefits	15,628	18,687
Accrued warranty	3,785	4,846
Deferred profit	3,730	6,941
Income taxes payable	4,195	3,133
Other accrued liabilities	$ 8,563	6,708
Current liabilities of discontinued operations (Note 2)		2,783
Total current liabilities	$ 63,191	68,217
Accrued retirement benefits	15,397	$ 13,180
Noncurrent deferred gain on sale of facility (Note 3)	13,142
Deferred income taxes	6,954	$ 7,269
Noncurrent income tax liabilities	6,761	7,321
Other accrued liabilities	$ 1,764	1,004
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, 26,240 shares issued and outstanding in 2015 and 25,692 shares in 2014	$ 26,240	$ 25,692
Paid-in capital	105,516	97,938
Retained earnings	128,153	134,152
Accumulated other comprehensive loss	(21,772)	(10,714)
Total stockholders' equity	238,137	247,068
	$ 345,346	$ 344,765