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Debt (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Mar. 31, 2021
USD ($)
D
$ / shares
Aug. 31, 2022
USD ($)
$ / shares
Aug. 31, 2021
USD ($)
$ / derivative
Aug. 31, 2022
USD ($)
$ / shares
Aug. 31, 2021
USD ($)
$ / derivative
Feb. 28, 2022
USD ($)
Nov. 06, 2020
USD ($)
Jul. 31, 2019
USD ($)
Debt Instrument [Line Items]                
Line of credit   $ 1,425   $ 1,425        
Convertible Senior Notes                
Debt Instrument [Line Items]                
Debt instrument, face amount $ 287,500              
Interest rate 0.50%              
Conversion rate | $ / shares $ 19.8088 $ 50.48   $ 50.48        
Principal amount denomination $ 1              
Threshold percentage of stock price trigger 130.00%              
Threshold trading days | D 20              
Threshold consecutive trading days | D 30              
Percentage of principal amount redeemed 100.00%              
Cap price | $ / derivative     76.20   76.20      
Proceeds from notes payable $ 279,132              
Payment of costs of the capped call transactions 34,443              
Cost which includes allocated pro-rata on capped call costs 8,428              
Long-term debt   $ 287,500   $ 287,500   $ 287,500    
Outstanding debt   281,500   281,500   280,666    
Debt issuance cost   6,000   6,000   $ 6,834    
Interest expenses   779 $ 773 1,558 $ 1,326      
Amortization of debt discount   417 415 834 $ 717      
Amount allocated to capped call $ 60              
Number of business day | D 5              
Number of consecutive trading day | D 10              
Percentage of average conversion value of note 98.00%              
Effective interest rate over period         1.10%      
Percentage of premium over last reported sale price         100.00%      
Amount allocated to the Notes $ 8,368              
Revolving Credit Facility, 2019                
Debt Instrument [Line Items]                
Maximum borrowing capacity             $ 50,000 $ 80,000
Long-term debt   78,575   78,575        
Outstanding debt   0   0        
Interest expenses   158 $ 74 210 $ 195      
Revolving Credit Facility, 2019 | Minimum                
Debt Instrument [Line Items]                
Threshold net cash for extension of debt term   $ 200   $ 200        
Revolving Credit Facility, 2019 | Bloomberg Short-Term Bank Yield Index                
Debt Instrument [Line Items]                
Debt instrument variable rate       3.50%        
Revolving Credit Facility, 2019 | BSBY Rate and Base Rate                
Debt Instrument [Line Items]                
Debt instrument variable rate       2.50%