XML 52 R42.htm IDEA: XBRL DOCUMENT v3.24.1.u1
Share-Based Compensation (Restricted Share Activity) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 193,708 185,093 196,857
Granted (1) 63,050 89,795  
Vested (45,475) (96,304)  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period (8,960) (5,255)  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value $ 34.93 $ 32.38 $ 29.32
Granted (1) 32.78 34.96  
Vested 29.09 28.60  
Forfeited $ 32.91 $ 31.17  
Deferred compensation expense yet to be recognized $ 5,179    
Period of time that deferred compensation expense will be recognized 2 years 7 months 6 days    
Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 34,655 71,951 133,317
Granted (1) 0 0  
Vested (32,211) (56,931)  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period (5,085) (4,435)  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value $ 29.81 $ 28.53 $ 27.95
Granted (1) 0 0  
Vested 26.87 27.03  
Forfeited $ 30.33 $ 30.20  
Deferred compensation expense yet to be recognized $ 911    
Period of time that deferred compensation expense will be recognized 1 year 7 months 2 days    
Performance Shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 73,180 56,155 57,435
Granted (1) 17,025 34,840  
Vested 0 (36,120)  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period 0 0  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value $ 37.37 $ 35.70 $ 32.89
Granted (1) 42.89 35.79  
Vested 0 31.31  
Forfeited $ 0 $ 0  
Deferred compensation expense yet to be recognized $ 1,559    
Period of time that deferred compensation expense will be recognized 2 years 1 month 24 days    
Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 85,873 56,987 6,105
Granted (1) 46,025 54,955  
Vested (13,264) (3,253)  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period (3,875) (820)  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value $ 34.92 $ 33.97 $ 25.92
Granted (1) 36.08 34.43  
Vested 34.47 26.06  
Forfeited $ 36.30 $ 36.42  
Deferred compensation expense yet to be recognized $ 2,709    
Period of time that deferred compensation expense will be recognized 3 years 2 months 12 days