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Commitments and Contingencies (Details) - USD ($)
$ in Thousands
8 Months Ended 12 Months Ended
Aug. 23, 2016
Dec. 18, 2014
Aug. 31, 2015
Aug. 31, 2016
Aug. 31, 2015
Feb. 25, 2015
Operating lease agreements            
Outstanding deposits maintained for noncancellable operating leases     $ 87 $ 83 $ 87  
Lease expense related to operating leases       462 545  
Loss Contingency            
Amount received from sale of common stock $ 2,885     2,885    
Future noncancellable minimum rental payments            
2017       487    
2018       289    
2019       120    
2020       102    
2021       34    
Total       1,032    
Purchase Obligations            
Purchase commitments for inventory, property, plant and equipment     2,600 $ 1,500 $ 2,600  
Xiaoqing Han.            
Loss Contingency            
Amount received from sale of common stock     $ 261      
Purchase price as per agreement   $ 5,000        
Liquidating damages owed to entity if buyer does not purchase common stock           $ 3,000