XML 62 R51.htm IDEA: XBRL DOCUMENT v3.21.2
Capital - Incentive and Share-based Compensation (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Aug. 31, 2021
USD ($)
vesting_installment
shares
Sep. 30, 2021
USD ($)
shares
Dec. 31, 2020
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
$ / shares
shares
Sep. 30, 2020
USD ($)
May 16, 2019
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Retirement age (in years)     65 years 60 years 65 years    
Expected volatility rate look-back period (in years)         6 years    
Weighted-average per unit or share fair value (in USD per share) | $ / shares         $ 8.52    
Period of service, upon completion of which, grantee's LTIP unit and restricted stock awards will immediately vest (in years)         10 years    
Minimum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Age of grantee at which LTIP unit and restricted stock awards immediately vest (in years)         60 years    
Maximum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Age of grantee at which LTIP unit and restricted stock awards immediately vest (in years)         65 years    
Awards that meet age and service requirements for vesting              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Noncash share-based compensation expense recognized   $ 700   $ 400 $ 2,100 $ 2,300  
Unrecognized compensation expense   2,300     $ 2,300    
Unrecognized compensation expense, period for recognition (in years)         2 years 6 months    
Awards that do not meet age and service requirements for vesting              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Noncash share-based compensation expense recognized   4,700   $ 5,100 $ 13,300 $ 17,900  
Unrecognized compensation expense   $ 28,100     $ 28,100    
Unrecognized compensation expense, period for recognition (in years)         2 years 4 months 24 days    
Long-term incentive plan units and restricted stock              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Fair value of share-based awards granted in period         $ 20,000    
Weighted-average per unit or share fair value (in USD per share) | $ / shares         $ 8.52    
Dividend rate (as a percent)         2.60%    
Risk free interest rate, minimum (as a percent)         0.12%    
Risk free interest rate, maximum (as a percent)         0.32%    
Expected price volatility, minimum (as a percent)         36.00%    
Expected price volatility, maximum (as a percent)         53.00%    
Long-term incentive plan units and restricted stock | Minimum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Expected term (in years)         2 years    
Long-term incentive plan units and restricted stock | Maximum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Expected term (in years)         5 years 3 months 18 days    
Time based long-term incentive plan unit              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Threshold of continuous service for retirement eligibility (in years)         10 years    
Time based long-term incentive plan unit | Minimum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period (in years)         3 years    
Time based long-term incentive plan unit | Maximum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period (in years)         5 years    
Time based long-term incentive plan unit | Median              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period (in years)         4 years    
Time based long-term incentive plan unit | 2019 Plan Units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of vesting installments | vesting_installment 3            
Award vesting period (in years) 4 years            
Time based long-term incentive plan unit | Executive officer | 2019 Plan Units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares granted (in shares) | shares 8,772            
Fair value of share-based awards granted in period $ 75            
Market based long-Term incentive plan unit | August 2021 Awards              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period (in years) 3 years            
Market based long-Term incentive plan unit | Minimum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period (in years)         3 years    
Market based long-Term incentive plan unit | Maximum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period (in years)         4 years    
Market based long-Term incentive plan unit | 2019 Plan Units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of vesting installments | vesting_installment 2            
Market based long-Term incentive plan unit | Executive officer | 2019 Plan Units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares granted (in shares) | shares 26,930            
Fair value of share-based awards granted in period $ 150            
2019 Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares authorized under the plan (in shares) | shares   11,000,000     11,000,000   11,000,000
Number of shares that remain available for future issuance (in shares) | shares   7,700,000     7,700,000