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Business Acquisitions (Schedule of Estimated Purchase Price Allocation) (Details) (USD $)
In Thousands
Jun. 30, 2011
Business Combinations  
Current assets $ 14,627
Investments in marketable securities 8,463
Property, plant, and equipment 1,954
Goodwill 24,188
Intangible assets 11,882
Total assets acquired 61,114
Other current liabilities 5,505
Warranty accrual 2,250
Postretirement benefits 434
Deferred tax liabilities 2,472
Other tax - noncurrent 3,292
Total liabilities assumed 13,953
Net assets acquired $ 47,161