Acquisitions (Schedule Of Allocation Of Acquisition Costs To Assets Acquired And Liabilities Assumed) (Details) (USD $) In Thousands	Sep. 30, 2011
Business Acquisition [Line Items]
Accounts receivable	$ 26,772
Inventory	61,064
Other current assets, net of cash acquired	7,026
Property, plant and equipment	37,836
Goodwill	227,876
Intangible assets	136,929
Other assets	4,057
Total assets acquired	501,560
Total liabilities assumed	(52,764)
Net assets acquired	448,796
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	16,688
Intangible assets	11,435
Other assets	24
Total assets acquired	35,038
Total liabilities assumed	(527)
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	1,087
Property, plant and equipment	567
Goodwill	4,305
Intangible assets	9,717
Other assets	1,915
Total assets acquired	21,577
Total liabilities assumed	(3,043)
Net assets acquired	18,534
CVI Melles Griot [Member]
Business Acquisition [Line Items]
Accounts receivable	24,065
Inventory	57,986
Other current assets, net of cash acquired	5,866
Property, plant and equipment	32,250
Goodwill	206,883
Intangible assets	115,777
Other assets	2,118
Total assets acquired	444,945
Total liabilities assumed	(49,194)
Net assets acquired	$ 395,751