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Revolving Credit Facilities and Mortgage Payable - China Line of Credit (Details)
1 Months Ended 12 Months Ended
Oct. 31, 2015
USD ($)
Oct. 30, 2014
Aug. 31, 2013
Mar. 31, 2017
USD ($)
May 30, 2017
USD ($)
Oct. 31, 2016
USD ($)
Oct. 31, 2016
CNY (¥)
Oct. 31, 2015
CNY (¥)
Jun. 30, 2014
USD ($)
Jun. 30, 2014
CNY (¥)
Mar. 31, 2014
USD ($)
Mar. 31, 2014
CNY (¥)
Dec. 31, 2013
USD ($)
Dec. 31, 2013
CNY (¥)
Sep. 30, 2013
USD ($)
Sep. 30, 2013
CNY (¥)
China Credit Agreement                                
Debt Instrument [Line Items]                                
Debt instrument covenant percentage of facility amount in United States dollars guaranteed       108.50%                        
Amended China Credit Agreement                                
Debt Instrument [Line Items]                                
Debt instrument term 12 months 18 months 12 months                          
Maximum | China Credit Agreement                                
Debt Instrument [Line Items]                                
Current borrowing capacity                 $ 3,000,000 ¥ 20,000,000 $ 3,000,000 ¥ 20,000,000 $ 9,000,000 ¥ 60,000,000 $ 9,000,000 ¥ 60,000,000
Revolving Credit Facility | Line of Credit | Second Amended China Credit Facility                                
Debt Instrument [Line Items]                                
Current borrowing capacity       $ 0                        
Percentage of People's Bank of China rate       110.00%                        
Interest rate, effective percentage       4.35%                        
Long-term line of credit       $ 35,000,000                        
Repayments of lines of credit       48,000,000                        
Amount available under the credit agreement       $ 44,000,000                        
Subsequent Event | Line of Credit | Second Amended China Credit Facility                                
Debt Instrument [Line Items]                                
Long-term line of credit         $ 0                      
Amount available under the credit agreement         44,000,000                      
Subsequent Event | Revolving Credit Facility | Line of Credit | Second Amended China Credit Facility                                
Debt Instrument [Line Items]                                
Long-term line of credit         $ 0                      
Line of Credit | Revolving Credit Facility | Amended China Credit Agreement                                
Debt Instrument [Line Items]                                
Additional available credit $ 22,000,000             ¥ 150,000,000                
Line of Credit | Revolving Credit Facility | Second Amended China Credit Facility                                
Debt Instrument [Line Items]                                
Additional available credit           $ 44,000,000 ¥ 300,000,000                  
Capacity available for specific purpose other than for trade purchases $ 7,000,000         $ 7,000,000 ¥ 50,000,000 ¥ 50,000,000