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Subsequent Events - Additional Information (Detail) - Subsequent Event [Member] - USD ($)
Jan. 03, 2017
Jan. 18, 2017
Subsequent Event [Line Items]    
Debt Instrument, Face Amount $ 5,000,000  
Loans Receivable, Description of Variable Rate Basis the rate of the Prime Rate plus 1%  
APA ACO, Inc [Member]    
Subsequent Event [Line Items]    
Equity Method Investment, Ownership Percentage   50.00%