Quarterly report pursuant to Section 13 or 15(d)

Equity - Summary of Unvested Shares (Details)

v3.20.1
Equity - Summary of Unvested Shares (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Restricted Shares of Common Stock    
Shares    
Beginning Balance (in shares) 750,242 1,386,756
Granted (in shares) 189,541 150,493
Vested (in shares) (480,213) (781,218)
Forfeited (in shares) 0 (5,789)
Ending Balance (in shares) 459,570 750,242
Weighted Average Grant Date Fair Value    
Beginning Balance (in usd per share) $ 20.08 $ 19.00
Granted (in usd per share) 33.01 23.99
Vested (in usd per share) 18.57 18.91
Forfeited (in usd per share) 0 20.62
Ending Balance (in usd per share) $ 27.00 $ 20.08
Value    
Beginning Balance $ 15.1 $ 26.4
Granted 6.2 3.6
Vested (8.9) (14.8)
Forfeited 0.0 (0.1)
Ending Balance $ 12.4 $ 15.1
Restricted stock units    
Shares    
Beginning Balance (in shares) 435,578 393,148
Granted (in shares) 23,342 46,586
Vested (in shares) (433,864) (1,380)
Forfeited (in shares) 0 (2,776)
Ending Balance (in shares) 241,988 435,578
Weighted Average Grant Date Fair Value    
Beginning Balance (in usd per share) $ 20.12 $ 19.55
Granted (in usd per share) 27.18 25.10
Vested (in usd per share) 18.99 21.68
Forfeited (in usd per share) 0 22.23
Ending Balance (in usd per share) $ 21.81 $ 20.12
Value    
Beginning Balance $ 8.8 $ 7.7
Granted 0.6 1.2
Vested (8.2) 0.0
Forfeited 0.0 (0.1)
Ending Balance $ 5.3 $ 8.8
Restricted stock units | Minimum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting percentage 0.00%  
Restricted stock units | Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting percentage 200.00%  
Incremental performance shares granted    
Shares    
Granted (in shares) 216,932  
Weighted Average Grant Date Fair Value    
Granted (in usd per share) $ 18.99  
Value    
Granted $ 4.1  
LTIP Time-Based Vesting Units    
Shares    
Beginning Balance (in shares) 201,310 0
Granted (in shares) 0 209,330
Vested (in shares) 0 (8,020)
Forfeited (in shares) 0 0
Ending Balance (in shares) 201,310 201,310
Weighted Average Grant Date Fair Value    
Beginning Balance (in usd per share) $ 25.84 $ 0
Granted (in usd per share) 0 25.84
Vested (in usd per share) 0 25.82
Forfeited (in usd per share) 0 0
Ending Balance (in usd per share) $ 25.84 $ 25.84
Value    
Beginning Balance $ 5.2 $ 0.0
Granted 0.0 5.4
Vested 0.0 (0.2)
Forfeited 0.0 0.0
Ending Balance $ 5.2 $ 5.2
LTIP Market-Based Vesting Units    
Shares    
Beginning Balance (in shares) 180,500 0
Granted (in shares) 0 180,500
Vested (in shares) 0 0
Forfeited (in shares) 0 0
Ending Balance (in shares) 180,500 180,500
Weighted Average Grant Date Fair Value    
Beginning Balance (in usd per share) $ 26.70 $ 0
Granted (in usd per share) 0 26.70
Vested (in usd per share) 0 0
Forfeited (in usd per share) 0 0
Ending Balance (in usd per share) $ 26.70 $ 26.70
Value    
Beginning Balance $ 4.8 $ 0.0
Granted 0.0 4.8
Vested 0.0 0.0
Forfeited 0.0 0.0
Ending Balance $ 4.8 $ 4.8
LTIP Market-Based Vesting Units | Minimum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting percentage 0.00%  
LTIP Market-Based Vesting Units | Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting percentage 200.00%