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Notes Payable and Long-Term Debt - China Line of Credit (Details)
$ in Thousands
1 Months Ended 2 Months Ended 12 Months Ended
Oct. 30, 2014
May. 31, 2016
USD ($)
Mar. 31, 2016
USD ($)
Mar. 31, 2016
CNY (¥)
Dec. 31, 2015
USD ($)
Oct. 15, 2015
USD ($)
Oct. 15, 2015
CNY (¥)
Sep. 30, 2015
CNY (¥)
Jun. 30, 2015
USD ($)
Dec. 31, 2013
CNY (¥)
China Credit Agreement                    
Debt Instrument [Line Items]                    
Debt Instrument Covenant Percentage of Facility Amount in United States Dollars Guaranteed     110.00% 110.00%            
Second Amended China Credit Facility                    
Debt Instrument [Line Items]                    
Long-term Line of Credit     $ 14,000              
Maximum | China Credit Agreement                    
Debt Instrument [Line Items]                    
Debt Instrument Covenant Borrowings Allowed in Third and Fourth Quarters of Fiscal Year         $ 10,000     ¥ 60,000,000    
Debt Instrument Covenant Borrowings Allowed in First and Second Quarters of Fiscal Year       ¥ 20,000,000         $ 3,300  
Current borrowing capacity | ¥                   ¥ 60,000,000
Maximum | Amended China Credit Agreement                    
Debt Instrument [Line Items]                    
Debt Instrument, Term 18 months                  
Minimum | Amended China Credit Agreement                    
Debt Instrument [Line Items]                    
Debt Instrument, Term 12 months                  
Revolving Credit Facility | Line of Credit | Second Amended China Credit Facility                    
Debt Instrument [Line Items]                    
Additional available credit           $ 23,000 ¥ 150,000      
Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases           $ 8,000 ¥ 50,000      
Long-term Line of Credit     23,000              
Repayments of Lines of Credit     $ 14,100              
Debt Instrument, Interest Rate, Effective Percentage     4.35% 4.35%            
Subsequent Event | Second Amended China Credit Facility                    
Debt Instrument [Line Items]                    
Long-term Line of Credit   $ 9,200                
Repayments of Lines of Credit   $ 4,800