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Debt - Schedule of Outstanding Borrowings (Detail) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Debt Instrument [Line Items]    
Sale and leaseback financing obligation $ 20,400 $ 19,931
Finance lease liabilities 1,793 1,065
Outstanding borrowings 47,900 37,243
Debt – current portion (18,849) (12,436)
Long-term debt 29,051 24,807
Revolving Credit Facility [Member]    
Debt Instrument [Line Items]    
Long term debt 16,516 6,000
Industrial Revenue Bonds [Member]    
Debt Instrument [Line Items]    
Long term debt 9,191 9,191
Minority Shareholder Loan [Member]    
Debt Instrument [Line Items]    
Long term debt $ 0 $ 1,056