Quarterly report pursuant to Section 13 or 15(d)

Organization (Details)

v3.5.0.2
Organization (Details) - USD ($)
 1 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
ZH USA, LLC owns an aggregate of Company's outstanding common stock 1,426,656 1,426,656   250,000
Stock Issued During Period, Shares, New Issues 15,000,000      
Payments of Stock Issuance Costs $ 1,369,565 $ 358,365 $ 0  
Llc Owns An Aggregate Of Company Outstanding Common Stock 1,425,481 1,425,481    
Llc Owns An Aggregate Of Company Outstanding Common Stock In Percentage 99.90% 99.90%    
Noninterest Expense Offering Cost $ 1,581,259      
IPO [Member]        
Stock Issued During Period, Shares, New Issues 13,043,479      
Stock Issued During Period, Value, New Issues $ 130,434,790 $ 130,434,790    
Proceeds from Issuance Initial Public Offering $ 120,773,630      
Shares Issued, Price Per Share $ 10.00 $ 10.00    
Payments of Stock Issuance Costs $ 9,661,160      
Over-Allotment Option [Member]        
Stock Issued During Period, Shares, New Issues 1,956,521      
Stock Issued During Period, Value, New Issues $ 19,565,210      
Proceeds from Issuance Initial Public Offering $ 18,195,645      
Shares Issued, Price Per Share $ 10.00 $ 10.00    
Payments of Stock Issuance Costs $ 1,369,565      
Noninterest Expense Offering Cost $ 1,581,259      
ZH International Holdings Limited [Member]        
ZH USA, LLC owns an aggregate of Company's outstanding common stock 1,425,481 1,425,481