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Term Loan - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
1 Months Ended 12 Months Ended
Feb. 28, 2014
Sep. 30, 2012
Jun. 30, 2014
Sep. 08, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loan Agreement, principal amount       $ 25
Term of loan, in years     6 years  
Interest rate per annum   7.00% 6.00%  
Loan and interest outstanding, settled $ 25.9