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Subsequent Events (Narrative) (Detail) (USD $)
Sep. 30, 2012
Jun. 30, 2012
Sep. 30, 2012
M-Cubed Technologies Inc [Member]
Nov. 01, 2012
Subsequent Event [Member]
M-Cubed Technologies Inc [Member]
Oct. 31, 2012
Subsequent Event [Member]
M-Cubed Technologies Inc [Member]
Subsequent Event [Line Items]          
Total cost of acquisition       $ 71,400,000  
Working capital adjustment       2,500,000  
Transaction - related expenses attributable to acquisition     500,000    
Credit facility 50,000,000       50,000,000
Line of credit facility, maximum borrowing capacity 80,000,000       80,000,000
Total long-term debt following the acquisition $ 17,865,000 $ 12,769,000 $ 82,000,000