Quarterly report pursuant to Section 13 or 15(d)

Short-Term Borrowings and Credit Lines (Details)

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Short-Term Borrowings and Credit Lines (Details) - 3 months ended Sep. 30, 2018
CNY (¥)
USD ($)
LIBOR    
Line of Credit Facility [Line Items]    
Description of variable rate LIBOR  
Basis spread on variable rate 1.80%  
PBOC Base Rate    
Line of Credit Facility [Line Items]    
Description of variable rate PBOC base rate  
Basis spread on variable rate 110.00%  
China Subsidiary | Unsecured and Uncommitted Line of Credit    
Line of Credit Facility [Line Items]    
Maximum borrowing capacity ¥ 137,806,000 $ 20,000,000
Long-term line of credit outstanding ¥ 57,266,000 $ 8,311,000