Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012		Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 178,692		$ 164,016
Short-term investments	19,022		13,997
Accounts receivable, less allowances	106,985		92,088
Inventories	77,729		75,575
Deferred income taxes	12,815		11,895
Prepaid expenses and other current assets	14,797		14,219
Assets held for sale	6,658		6,592
Total current assets	416,698		378,382
Property, plant and equipment:
Land	5,075		4,888
Buildings	53,577		52,730
Equipment	285,711		281,521
	344,363		339,139
Accumulated depreciation	(227,704)		(220,255)
Net property, plant and equipment	116,659		118,884
Intangible assets, net of amortization:
Patents, licenses and software	10,500		10,753
Distribution network	18,998		19,307
Customer lists, trademarks and tradenames	14,505		14,523
Goodwill	116,693		115,697
Investments	16,918		14,867
Deferred income taxes	3,761		4,191
Other assets	1,852		1,820
Total assets	716,584		678,424
Current liabilities:
Accounts payable	28,650		19,934
Accrued payroll	15,534		23,048
Accrued expenses	8,772		8,861
Accrued severance	1,743		1,843
Accrued income taxes	13,214		10,591
Current portion of long-term debt	96,500		85,000
Total current liabilities	164,413		149,277
Accrued post-retirement benefits	10,544		15,292
Other long-term liabilities	12,270		12,752
Total equity	529,357	[1]	501,103	[1]
Total liabilities and equity	$ 716,584		$ 678,424

[1] Common shares issued and outstanding of 21,668,819 and 21,552,529, at March 31, 2012 and December 31, 2011, respectively.