Acquisitions (Schedule Of Allocation Of Acquisition Costs To Assets Acquired And Liabilities Assumed) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Business Acquisition [Line Items]
Accounts receivable	$ 26,685
Inventory	58,513
Other current assets, net of cash acquired	7,552
Current assets, net of cash acquired		24,679
Property, plant and equipment	36,558	18,344
Goodwill	231,189	45,915
Intangible assets	136,929	29,861
Other assets	5,210	2,906
Total assets acquired	502,636	121,705
Total liabilities assumed	(56,275)	(30,439)
Net assets acquired	446,361	91,266
Advanced Thin Films, LLC [Member]
Business Acquisition [Line Items]
Accounts receivable	947
Inventory	852
Other current assets, net of cash acquired	73
Property, plant and equipment	5,019
Goodwill	18,187
Intangible assets	11,435
Other assets	2,704
Total assets acquired	39,217
Total liabilities assumed	(4,706)
Net assets acquired	34,511
Microfluidics International Corporation [Member]
Business Acquisition [Line Items]
Accounts receivable	1,760
Inventory	2,226
Other current assets, net of cash acquired	852
Property, plant and equipment	567
Goodwill	5,740
Intangible assets	9,717
Other assets	563
Total assets acquired	21,425
Total liabilities assumed	(2,889)
Net assets acquired	18,536
CVI Melles Griot [Member]
Business Acquisition [Line Items]
Accounts receivable	23,978
Inventory	55,435
Other current assets, net of cash acquired	6,627
Property, plant and equipment	30,972
Goodwill	207,262
Intangible assets	115,777
Other assets	1,943
Total assets acquired	441,994
Total liabilities assumed	(48,680)
Net assets acquired	$ 393,314