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Subsequent Events - Additional Information (Detail) - USD ($)
May 11, 2017
Mar. 25, 2017
Dec. 31, 2016
Subsequent Event [Line Items]      
Line of credit     $ 110,000,000
Lease Financing [Member]      
Subsequent Event [Line Items]      
Borrowed   $ 2,200,000  
Subsequent Event [Member] | Lease Financing [Member]      
Subsequent Event [Line Items]      
Line of credit $ 4,750,000