Supplemental Balance Sheet Information (Tables)

6 Months Ended

Jun. 30, 2012

Supplemental Balance Sheet Information [Abstract]

Inventories

(In thousands)	June  30, 2012		December  31, 2011
Raw materials and purchased parts	$	65,117	$	65,054
Work in process		18,619		19,257
Finished goods		24,982		28,657
	$	108,718	$	112,968

Accrued Warranty Obligations

	Six Months Ended
(In thousands)	June 30, 2012			July 2, 2011
Balance at beginning of year	$	4,466		$	4,105
Additions charged to cost of sales		1,290			1,862
Additions from acquisitions		21			—
Warranty claims		(1,749	)		(1,936	)
Balance at end of period	$	4,028		$	4,031

Accrued Expenses and Other Current Liabilities

(In thousands)	June 30, 2012		December 31, 2011
Deferred revenue	$	11,034	$	12,383
Accrued and deferred tax liabilities		6,397		4,379
Deferred lease liability		5,148		5,201
Short-term accrued warranty obligations		3,889		4,342
Other		11,159		13,495
	$	37,627	$	39,800

Accumulated Other Comprehensive Loss

(In thousands)	June 30, 2012			December 31, 2011
Cumulative foreign currency translation losses	$	(7,684	)	$	(5,804	)
Unrecognized net pension losses		(919	)		(1,005	)
Unrealized gains on marketable securities		713			820
	$	(7,890	)	$	(5,989	)