Quarterly report pursuant to Section 13 or 15(d)

Equity - Summary of Unvested Shares (Details)

v3.23.1
Equity - Summary of Unvested Shares (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2023
Dec. 31, 2022
Restricted Shares of Common Stock    
Shares    
Beginning Balance (in shares) 168,452 193,548
Granted (in shares) 65,678 71,911
Vested (in shares) (81,918) (93,646)
Forfeited (in shares) (541) (3,361)
Ending Balance (in shares) 151,671 168,452
Weighted Average Grant Date Fair Value    
Beginning Balance (in usd per share) $ 33.59 $ 38.66
Granted (in usd per share) 31.23 37.32
Vested (in usd per share) 26.01 46.46
Forfeited (in usd per share) 36.58 46.83
Ending Balance (in usd per share) $ 36.65 $ 33.59
Value    
Beginning Balance $ 5.7 $ 7.5
Granted 2.0 2.7
Vested (2.1) (4.3)
Forfeited 0.0 (0.2)
Ending Balance $ 5.6 $ 5.7
Restricted stock units    
Shares    
Beginning Balance (in shares) 58,404 78,366
Granted (in shares) 62,310 24,790
Vested (in shares) (17,449) (79,460)
Forfeited (in shares) (10,686) (5,022)
Ending Balance (in shares) 99,884 58,404
Weighted Average Grant Date Fair Value    
Beginning Balance (in usd per share) $ 51.03 $ 35.32
Granted (in usd per share) 39.29 58.77
Vested (in usd per share) 34.63 25.12
Forfeited (in usd per share) 21.03 49.00
Ending Balance (in usd per share) $ 48.58 $ 51.03
Value    
Beginning Balance $ 3.0 $ 2.8
Granted 2.4 1.5
Vested (0.6) (2.1)
Forfeited (0.2) (0.2)
Ending Balance $ 4.9 $ 3.0
Restricted stock units | Minimum    
Value    
Award vesting percentage (as a percent) 0.00%  
Restricted stock units | Maximum    
Value    
Award vesting percentage (as a percent) 200.00%  
Incremental performance shares granted    
Shares    
Granted (in shares) 7,305 39,730
Weighted Average Grant Date Fair Value    
Granted (in usd per share) $ 34.63 $ 25.12
Value    
Granted $ 0.3 $ 1.0
LTIP time-based vesting units    
Shares    
Beginning Balance (in shares) 276,766 384,046
Granted (in shares) 322,349 174,340
Vested (in shares) (69,869) (279,123)
Forfeited (in shares) 0 (2,497)
Ending Balance (in shares) 529,246 276,766
Weighted Average Grant Date Fair Value    
Beginning Balance (in usd per share) $ 42.21 $ 43.15
Granted (in usd per share) 30.31 44.08
Vested (in usd per share) 34.64 44.64
Forfeited (in usd per share) 0 46.08
Ending Balance (in usd per share) $ 35.96 $ 42.21
Value    
Beginning Balance $ 11.7 $ 16.6
Granted 9.8 7.7
Vested (2.4) (12.5)
Forfeited 0.0 (0.1)
Ending Balance $ 19.1 $ 11.7
LTIP market-based vesting units    
Shares    
Beginning Balance (in shares) 324,028 347,478
Granted (in shares) 282,034 125,550
Vested (in shares) (96,496) (298,000)
Forfeited (in shares) (56,102) 0
Ending Balance (in shares) 493,858 324,028
Weighted Average Grant Date Fair Value    
Beginning Balance (in usd per share) $ 42.84 $ 31.61
Granted (in usd per share) 39.29 54.77
Vested (in usd per share) 19.94 26.70
Forfeited (in usd per share) 4.56 0
Ending Balance (in usd per share) $ 47.76 $ 42.84
Value    
Beginning Balance $ 13.9 $ 11.0
Granted 11.1 6.9
Vested (1.9) (8.0)
Forfeited (0.3) 0.0
Ending Balance $ 23.6 $ 13.9
LTIP market-based vesting units | Minimum    
Value    
Award vesting percentage (as a percent) 0.00%  
LTIP market-based vesting units | Maximum    
Value    
Award vesting percentage (as a percent) 200.00%  
Incremental performance shares granted    
Shares    
Granted (in shares) 40,394 149,000
Weighted Average Grant Date Fair Value    
Granted (in usd per share) $ 19.94 $ 26.70
Value    
Granted $ 0.8 $ 4.0