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Debt - Additional Information (Detail) - USD ($)
3 Months Ended 12 Months Ended
Apr. 12, 2017
Jun. 30, 2017
Dec. 31, 2019
Sep. 18, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Apr. 11, 2017
Debt Instrument [Line Items]                    
Debt covenant mandatory prepayment         $ 4,200,000          
Revolving Credit Facility         $ 0   $ 0 $ 0 $ 7,500,000  
Revolving Credit Facility                    
Debt Instrument [Line Items]                    
Debt instrument fee     $ 600,000     $ 700,000        
Term Loan Facility                    
Debt Instrument [Line Items]                    
Book value of the outstanding debt     156,400,000              
Term Loan Facility | Line of Credit                    
Debt Instrument [Line Items]                    
Revolving credit facility $ 175,000,000                  
Term Loan Facility | Secured Debt                    
Debt Instrument [Line Items]                    
Basis spread (as a percent) 0.50%                  
Accrued interest     100,000              
Debt instrument fee     1,700,000              
Debt instrument discount     1,800,000              
Book value of the outstanding debt     $ 156,384,000     $ 163,758,000        
Weighted average interest rate (as a percent)     8.29%     8.09%        
Quarterly debt principal payment     $ 1,100,000              
Term Loan Facility | Base Rate Loans | Secured Debt                    
Debt Instrument [Line Items]                    
Basis spread (as a percent) 5.00%                  
Term Loan Facility | LIBOR Revolver Loans | Secured Debt                    
Debt Instrument [Line Items]                    
Basis spread (as a percent) 6.00%                  
Term Loan Facility | LIBOR Revolver Loans | Secured Debt | Minimum                    
Debt Instrument [Line Items]                    
Basis spread (as a percent) 1.00%                  
7.875% senior secured notes due April 15, 2019 | Senior Notes                    
Debt Instrument [Line Items]                    
Cash payment for debt redemption $ 74,000,000                  
Interest (as a percent) 7.875%                  
Write off of deferred financing fees   $ 1,600,000                
Interest costs   $ 1,500,000                
Third ARLS Agreement | Line of Credit | Revolving Credit Facility                    
Debt Instrument [Line Items]                    
Revolving credit facility $ 65,000,000     $ 90,000,000.0           $ 40,000,000
Capacity available for inventory       7,000,000.0            
Maximum borrowing capacity, incremental commitments       $ 20,000,000.0            
Availability of borrowing     $ 55,100,000              
Commitment fee (as a percent)     0.25%              
Third ARLS Agreement | Line of Credit | Letter of Credit                    
Debt Instrument [Line Items]                    
Revolving credit facility $ 10,000,000.0                  
Fixed charge coverage ratio 100.00%                  
Revolving Credit Facility     $ 1,600,000     $ 1,700,000        
Borrowing availability maintenance amount $ 5,000,000                  
Borrowing availability maintenance (as a percent) 10.00%                  
Borrowing availability compliance threshold period     60 days