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Debt (Details)
1 Months Ended 12 Months Ended
Oct. 31, 2023
Nov. 30, 2022
USD ($)
$ / shares
shares
Apr. 30, 2020
USD ($)
Dec. 31, 2023
USD ($)
D
$ / shares
shares
Dec. 31, 2022
USD ($)
$ / shares
shares
Dec. 31, 2021
USD ($)
Sep. 30, 2023
$ / shares
shares
Jun. 30, 2023
USD ($)
Jul. 31, 2021
$ / shares
shares
Dec. 31, 2020
USD ($)
Sep. 30, 2015
USD ($)
Debt Instrument [Line Items]                      
Proceeds from Convertible Note, net of issuance costs           $ 278,300,000          
Remaining borrowing capacity       $ 20,000,000.0              
Borrowings under credit facility         $ 30,000,000            
Collateral amount       $ 150,000,000.0              
Common Stock, Par or Stated Value Per Share | $ / shares       $ 0.0001 $ 0.0001            
Common stock, shares issued | shares   13,144,500   119,581,000 111,255,000   4,550,000   5,175,000    
Stock issued (in dollars per share) | $ / shares   $ 35         $ 55   $ 113    
Carrying value       $ 282,945,000 $ 281,653,000            
Debt, repayment amount           79,200,000          
Accrued Interest       1,078,000 1,078,000            
Amortization of debt discount and issuance cost       1,292,000 1,259,000 1,227,000          
Interest expense       12,638,000 9,319,000 8,305,000          
Convertible Notes                      
Debt Instrument [Line Items]                      
Aggregate principal amount     $ 287,500,000 $ 287,500,000              
Per annum interest rate (as a percent)     2.25% 2.25%              
Interest expense       $ 7,761,000 7,728,000 7,696,000          
Debt instrument, term       7 years              
Effective interest rate (as a percent)       2.72%              
Principal amount per convertible note     $ 1,000 $ 1,000              
Threshold business days | D       5              
Conversion price (in dollars per share) | $ / shares       $ 38.79              
Initial conversion rate       25.7785              
Convertible to shares of common stock       7,411,704              
Percentage of principal amount converted       100.00%              
Commencing after September 30, 2020 | Convertible Notes                      
Debt Instrument [Line Items]                      
Threshold trading days | D       30              
Percentage of conversion price       130.00%              
5 consecutive trading day period | Convertible Notes                      
Debt Instrument [Line Items]                      
Threshold trading days | D       5              
Percentage of conversion price       98.00%              
Redeemable for cash on or after May 2024 | Convertible Notes                      
Debt Instrument [Line Items]                      
Threshold trading days | D       30              
Percentage of conversion price       130.00%              
Percentage of principal amount converted       100.00%              
Level 2                      
Debt Instrument [Line Items]                      
Fair value of long-term debt       $ 491,800,000 358,400,000            
Minimum | Commencing after September 30, 2020 | Convertible Notes                      
Debt Instrument [Line Items]                      
Threshold trading days | D       20              
Minimum | Redeemable for cash on or after May 2024 | Convertible Notes                      
Debt Instrument [Line Items]                      
Threshold trading days | D       20              
Line Of Credit-UBS                      
Debt Instrument [Line Items]                      
Maximum borrowing capacity               $ 100,000,000.0   $ 150,000,000.0 $ 50,000,000.0
Outstanding balance       $ 80,400,000 80,400,000            
Credit facility drawn down       80,000,000.0              
Remaining borrowing capacity       20,000,000.0              
Borrowings under credit facility   $ 30,000,000.0                  
Collateral amount       150,000,000.0              
Interest expense       4,900,000 1,600,000 600,000          
Interest paid       $ 4,900,000 $ 1,600,000 $ 600,000          
Effective interest rate (as a percent)       5.84%              
Line Of Credit-UBS | London Interbank Offered Rate Member                      
Debt Instrument [Line Items]                      
Spread on interest rate (as a percent)         1.10%            
Line Of Credit-UBS | SOFR                      
Debt Instrument [Line Items]                      
Spread on interest rate (as a percent) 0.50%     0.50% 1.21%