Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Apr. 01, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 85,321	$ 95,108
Short-term investments	203	170
Accounts receivable, net	112,837	139,737
Inventories	107,745	103,622
Current deferred tax assets, net	8,422	84,541
Other current assets	29,117	24,226
Total current assets	343,645	447,404
Deferred tax assets, net	7,889	141,064
Goodwill	128,585	143,510
Intangible assets, net	57,303	61,996
Property, plant and equipment, net	44,821	47,086
Other assets, net	27,786	28,230
Total assets	610,029	869,290
Current liabilities:
Accounts payable	75,818	92,607
Payroll and related expenses	23,872	32,540
Deferred revenue	54,598	47,234
Accrued expenses	28,928	35,118
Total current liabilities	183,216	207,499
Long-term debt	85,000	85,000
Pension and other postretirement benefits liabilities	125,901	124,058
Long-term deferred revenue	28,567	28,960
Other long-term liabilities	16,298	15,344
Commitments and contingencies
Shareholders' equity:
Common stock (250,000 shares authorized, 63,096 and 62,956 shares issued and 59,847 and 59,717 outstanding)	636	636
Additional paid-in capital	700,912	697,597
Accumulated deficit	(452,417)	(210,327)
Accumulated other comprehensive loss	(78,084)	(79,477)
Total shareholders' equity	171,047	408,429
Total liabilities and shareholders' equity	$ 610,029	$ 869,290