Fair Value Measurements - Additional Information (Detail) (USD $)	3 Months Ended
	Sep. 30, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset impairment charges	$ 28,100,000
Fixed asset impairment charges	23,300,000
Intangibles asset impairment charges	4,800,000
SurModics Pharmaceuticals [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-lived assets on the current valuation of the assets	30,000,000
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Maximum fair value of mortgage-backed and asset-backed securities available for sale	$ 50,000