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Debt and Lease Obligations - Summary of Balances of Debt (Detail) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Debt Instrument [Line Items]    
Current portion of mortgage $ 70 $ 779
Current portion of bank loan 697  
Current portion of finance and capital lease obligations 191 182
Current portion of operating lease obligations 2,810  
Long-term portion of finance and capital lease obligations 277 422
Long-term portion of operating lease obligations 7,579  
Long-term portion of mortgage 670  
Total 64,028 46,764
Chongqing Maliu Credit Agreement    
Debt Instrument [Line Items]    
Chongqing Maliu Credit Agreement 5,583  
Senior Secured Loan    
Debt Instrument [Line Items]    
Senior secured loan, net of debt discount and financing fees of $3,849 and $4,619, respectively $ 46,151 $ 45,381