CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 29, 2013	Dec. 29, 2012
Current assets:
Cash and cash equivalents	$ 47,440	$ 102,808	[1]
Short-term investments	6,789	7,421	[1]
Accounts receivable, net	60,364	36,986	[1]
Inventories:
Raw materials and purchased parts	40,496	37,140	[1]
Work in process	18,618	14,958	[1]
Finished goods	8,552	10,234	[1]
Total inventories	67,666	62,332	[1]
Deferred income taxes	5,896	4,746	[1]
Other current assets	6,914	6,790	[1]
Total current assets	195,069	221,083	[1]
Property, plant and equipment, at cost:
Land and land improvements	12,035	12,106	[1]
Buildings and building improvements	31,734	31,209	[1]
Machinery and equipment	41,877	40,108	[1]
Property plant and equipment, gross	85,646	83,423	[1]
Less accumulated depreciation and amortization	(50,045)	(47,959)	[1]
Net property, plant and equipment	35,601	35,464	[1]
Goodwill	76,853	58,756	[1]
Intangible assets, net	39,838	18,977	[1]
Other assets	876	593	[1]
Total consolidated assets	348,237	334,873	[1]
Current liabilities:
Accounts payable	21,594	13,217	[1]
Accrued compensation and benefits	13,714	10,271	[1]
Accrued warranty	5,811	4,692	[1]
Deferred profit	6,949	2,139	[1]
Income taxes payable	1,970	1,109	[1]
Other accrued liabilities	8,388	4,952	[1]
Total current liabilities	58,426	36,380	[1]
Other accrued liabilities	14,132	5,847	[1]
Deferred income taxes	13,223	11,747	[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, 24,908 shares issued and outstanding in 2013 and 24,632 shares in 2012	24,908	24,632	[1]
Paid-in capital	86,738	83,547	[1]
Retained earnings	151,816	170,937	[1]
Accumulated other comprehensive income (loss)	(1,006)	1,783	[1]
Total stockholders' equity	262,456	280,899	[1]
Total liabilities and stockholders' equity	$ 348,237	$ 334,873	[1]

[1] Derived from December 29, 2012 audited financial statements