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Long Term Debt - Additional Information (Detail) - USD ($)
Dec. 23, 2016
Dec. 31, 2016
Debt Instrument [Line Items]    
Long term debt, net   $ 204,000,000
Revolving Credit Facility [Member]    
Debt Instrument [Line Items]    
Loans maximum borrowing capacity $ 300,000,000  
Aggregate principal amount of loan $ 205,000,000  
Maturity Date Dec. 23, 2021  
Upfront fees $ 700,000  
Debt issuance costs 300,000  
Long term debt, net 204,000,000  
Scheduled principal payments prior to maturity date 0  
Swingline Loans and Letters of Credit [Member]    
Debt Instrument [Line Items]    
Sublimits of loan $ 10,000,000