XML 112 R104.htm IDEA: XBRL DOCUMENT v3.22.2.2
Equity Compensation and Other Benefit Plans - Restricted Stock Units (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
RSUs With Service Condition      
RSUs With Service Condition      
Outstanding at beginning of year (in shares) 457,376 344,933 301,627
Granted (in shares) 379,281 234,765 115,382
Settled (in shares) (124,497) (94,822) (67,326)
Cancelled, forfeited or expired (in shares) 0 (27,500) (4,750)
Outstanding at end of year (in shares) 712,160 457,376 344,933
RSUs vested but not settled at end of year (in shares) 285,734 290,115 202,433
RSUs unvested at end of year (in shares) 426,426 167,261 142,500
Weighted Average Grant Date Fair Value      
Outstanding at beginning of year (in dollars per share) $ 24.76 $ 30.47 $ 30.27
Granted (in dollars per share) 16.63 19.54 29.41
Settled (in dollars per share) 25.98 30.99 27.71
Cancelled/forfeited (in dollars per share) 0 30.36 30.88
Outstanding at end of year (in dollars per share) 20.22 24.76 30.47
RSUs vested but not settled at end of year (in dollars per share) 20.89 21.49 30.79
Weighted average grant date fair value (in dollars per share) $ 19.77 $ 30.43 $ 30.01
RSUs With Market and Service Conditions      
RSUs With Service Condition      
Outstanding at beginning of year (in shares) 405,806 325,332 287,831
Granted (in shares) 602,156 190,800 112,752
Settled (in shares) (102,254) (110,326) (72,501)
Cancelled, forfeited or expired (in shares) 0 0 (2,750)
Outstanding at end of year (in shares) 905,708 405,806 325,332
RSUs vested but not settled at end of year (in shares) 112,752 102,254 110,326
RSUs unvested at end of year (in shares) 792,956 303,552 215,006
Weighted Average Grant Date Fair Value      
Outstanding at beginning of year (in dollars per share) $ 25.03 $ 27.13 $ 24.85
Granted (in dollars per share) 13.60 21.98 27.86
Settled (in dollars per share) 27.62 25.93 19.22
Cancelled/forfeited (in dollars per share) 0 0 26.85
Outstanding at end of year (in dollars per share) 17.14 25.03 27.13
RSUs vested but not settled at end of year (in dollars per share) 27.86 27.62 25.93
Weighted average grant date fair value (in dollars per share) $ 15.62 $ 24.16 $ 27.75
Expected term 1 year    
RSUs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation cost $ 12.3 $ 6.8  
Period for recognizing unrecognized compensation cost 1 year 9 months 18 days    
RSUs With Service Condition      
Outstanding at beginning of year (in shares) 863,182 670,265 589,458
Granted (in shares) 981,437 425,565 228,134
Settled (in shares) (226,751) (205,148) (139,827)
Cancelled, forfeited or expired (in shares) 0 (27,500) (7,500)
Outstanding at end of year (in shares) 1,617,868 863,182 670,265
RSUs vested but not settled at end of year (in shares) 398,486 392,369 312,759
RSUs unvested at end of year (in shares) 1,219,382 470,813 357,506
Weighted Average Grant Date Fair Value      
Outstanding at beginning of year (in dollars per share) $ 24.89 $ 28.85 $ 27.62
Granted (in dollars per share) 14.77 20.63 28.64
Settled (in dollars per share) 26.72 28.27 23.31
Cancelled/forfeited (in dollars per share) 0 30.36 29.40
Outstanding at end of year (in dollars per share) 18.50 24.89 28.85
RSUs vested but not settled at end of year (in dollars per share) 22.86 23.09 29.08
Weighted average grant date fair value (in dollars per share) $ 17.07 $ 26.39 $ 28.65
RSUs with Service Condition, weighted average grant date fair value based on share closing price      
RSUs With Service Condition      
Granted (in shares) 621,312 113,148 40,007
Weighted Average Grant Date Fair Value      
Weighted average volatility estimated 48.00%    
Expected term 3 years    
Weighted average risk-free rate 0.17%    
Share price (dollars per share)   $ 9.28 $ 29.12
RSUs With Service Condition, Weighted Average Grant Date Fair Value Based on Share Closing Price      
RSUs With Service Condition      
Granted (in shares) 306,134 11,231  
Weighted Average Grant Date Fair Value      
Weighted average volatility estimated 54.00%    
Expected term 2 years 6 months    
Weighted average risk-free rate 0.36%    
Share price (dollars per share)   $ 10.24  
Remaining RSUs With Service Condition, Weighted Average Grant Date Fair Value Based on Share Closing Price      
RSUs With Service Condition      
Granted (in shares) 53,991    
Weighted Average Grant Date Fair Value      
Share price (dollars per share) $ 18.80    
RSUs with Service Condition and both Service and Market Conditions      
RSUs With Service Condition      
Granted (in shares)   301,186 188,127
Weighted Average Grant Date Fair Value      
Weighted average volatility estimated   14.00% 15.00%
Expected term   3 years 3 years
Weighted average risk-free rate   1.36% 2.47%