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Indebtedness, net (Narrative) (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended
Jan. 18, 2023
USD ($)
May 31, 2021
USD ($)
day
$ / shares
Mar. 31, 2023
USD ($)
Mar. 31, 2022
USD ($)
Debt Instrument [Line Items]        
Amortization of principal     $ 468 $ 523
Gain (loss) on extinguishment of debt     2,318 0
Net proceeds from long-term debt     0 70,500
Mortgages | Mortgage Loan 12        
Debt Instrument [Line Items]        
Repayments of long-term debt $ 54,000      
Gain (loss) on extinguishment of debt     $ 2,300  
Convertible Senior Notes | Convertible senior notes        
Debt Instrument [Line Items]        
Face amount of debt   $ 86,250    
Interest rate (as a percent)   4.50% 4.50%  
Net proceeds from long-term debt   $ 82,800    
Coupon interest expense     $ 970 970
Discount amortization     $ 144 $ 132
Conversion rate   0.1577909    
Conversion price (in dollars per share) | $ / shares   $ 6.34    
Threshold percentage of stock price trigger   130.00%    
Threshold trading days | day   20    
Threshold consecutive trading days | day   30    
Redemption price, percentage (as a percent)   100.00%