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Long-term Debt - Narrative (Details)
Feb. 15, 2023
USD ($)
Dec. 13, 2022
Mar. 19, 2021
USD ($)
$ / shares
Feb. 10, 2021
USD ($)
Sep. 30, 2023
USD ($)
Sep. 30, 2022
Debt Instrument [Line Items]            
Letters of credit outstanding         $ 16,400,000  
Conversion price (in dollars per share) | $ / shares     $ 10.49      
4.75% Convertible Senior Notes            
Debt Instrument [Line Items]            
Debt instrument, face amount     $ 135,000,000      
Stated interest rate (as a percent)     4.75%      
Conversion ratio     0.0953516      
1.5% Convertible Unsecured Senior Notes            
Debt Instrument [Line Items]            
Stated interest rate (as a percent) 1.50%       1.50% 1.50%
Debt Instrument, principal amount repurchased $ 17,300,000          
Revolving Credit Facility Due January 2022            
Debt Instrument [Line Items]            
Long-term line of credit         $ 0  
Remaining borrowing capacity         $ 84,500,000  
Revolving Credit Facility Due January 2022 | Asset-based Revolving Credit Facility            
Debt Instrument [Line Items]            
Maximum borrowing capacity       $ 125,000,000    
Debt instrument, springing maturity, term (in days)       91 days    
Debt instrument, amount of indebtedness subject to springing maturity       $ 17,500,000    
Debt instrument, covenant, minimum fixed charge coverage ratio       1.0    
Debt instrument, percentage of borrowing base outstanding subject to covenant (as a percent)       15.00%    
Debt instrument, amount of borrowing base outstanding subject to covenant       $ 14,100,000    
Revolving Credit Facility Due January 2022 | Asset-based Revolving Credit Facility | Minimum            
Debt Instrument [Line Items]            
Commitment fee percentage (as a percent)   0.375%        
Revolving Credit Facility Due January 2022 | Asset-based Revolving Credit Facility | Maximum            
Debt Instrument [Line Items]            
Commitment fee percentage (as a percent)   0.50%        
Revolving Credit Facility Due January 2022 | Asset-based Revolving Credit Facility | SOFR            
Debt Instrument [Line Items]            
Basis spread on variable rate (as a percent)   0.00%        
Revolving Credit Facility Due January 2022 | Asset-based Revolving Credit Facility | SOFR | Minimum            
Debt Instrument [Line Items]            
Basis spread on variable rate (as a percent)   2.75%        
Revolving Credit Facility Due January 2022 | Asset-based Revolving Credit Facility | SOFR | Maximum            
Debt Instrument [Line Items]            
Basis spread on variable rate (as a percent)   3.25%        
Revolving Credit Facility Due January 2022 | Asset-based Revolving Credit Facility | Base Rate | Minimum            
Debt Instrument [Line Items]            
Basis spread on variable rate (as a percent)   1.75%        
Revolving Credit Facility Due January 2022 | Asset-based Revolving Credit Facility | Base Rate | Maximum            
Debt Instrument [Line Items]            
Basis spread on variable rate (as a percent)   2.25%        
Letter of Credit | Asset-based Revolving Credit Facility            
Debt Instrument [Line Items]            
Maximum borrowing capacity       $ 50,000,000