XML 94 R81.htm IDEA: XBRL DOCUMENT v3.24.0.1
EMPLOYEE BENEFITS - Pension Plan Asset Categories (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Retirement Plan        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets $ 81,551 $ 76,735 $ 97,439 $ 90,419
Retirement Plan Acquired        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets 3,085 3,128 $ 3,871 $ 3,613
Level 1 | Retirement Plan | Cash        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets 1,428 605    
Level 1 | Retirement Plan | U.S. large cap equities        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [1] 28,506 23,032    
Level 1 | Retirement Plan | U.S. mid cap equities        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [2] 4,323 3,594    
Level 1 | Retirement Plan | U.S. small cap equities        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [3] 11,907 12,447    
Level 1 | Retirement Plan | International        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [4] 0 0    
Level 1 | Retirement Plan | Corporate bonds        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [5] 0 0    
Level 1 | Retirement Plan | International developed        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [6] 9,317 8,161    
Level 1 | Retirement Plan | International emerging        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [2] 1,964 1,841    
Level 1 | Retirement Plan | Real estate        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [7] 0 0    
Level 1 | Retirement Plan | US Treasury and Government        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [5] 148 233    
Level 1 | Retirement Plan Acquired | Cash        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets 0 0    
Level 1 | Retirement Plan Acquired | U.S. large cap equities        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [1] 1,055 1,103    
Level 1 | Retirement Plan Acquired | U.S. mid cap equities        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [2] 125 135    
Level 1 | Retirement Plan Acquired | U.S. small cap equities        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [3] 64 66    
Level 1 | Retirement Plan Acquired | International        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [4] 540 547    
Level 1 | Retirement Plan Acquired | Corporate bonds        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [5] 1,078 1,027    
Level 1 | Retirement Plan Acquired | International developed        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [6] 0 0    
Level 1 | Retirement Plan Acquired | International emerging        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [2] 0 0    
Level 1 | Retirement Plan Acquired | Real estate        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [7] 223 250    
Level 1 | Retirement Plan Acquired | US Treasury and Government        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [5] 0 0    
Level 2 | Retirement Plan | Cash equivalents        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets 5,957 8,543    
Level 2 | Retirement Plan | Corporate bonds        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [5] 1,893 1,979    
Level 2 | Retirement Plan | U.S. government agencies        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [5] 4,871 4,380    
Level 2 | Retirement Plan | Municipal bonds        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [5] 11,119 11,774    
Level 2 | Retirement Plan | U.S. agency mortgage-backed securities        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [8] 118 146    
Level 2 | Retirement Plan Acquired | Cash equivalents        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets 0 0    
Level 2 | Retirement Plan Acquired | Corporate bonds        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [5] 0 0    
Level 2 | Retirement Plan Acquired | U.S. government agencies        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [5] 0 0    
Level 2 | Retirement Plan Acquired | Municipal bonds        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [5] 0 0    
Level 2 | Retirement Plan Acquired | U.S. agency mortgage-backed securities        
Defined Benefit Plan, Categories of Plan Assets [Abstract]        
Total fair value of plan assets [8] $ 0 $ 0    
[1] For the Retirement Plan, this category is comprised of broadly diversified “passive” and “active” mutual funds. The Acquired Retirement Plan assets in this category consist of pooled separate accounts invested in mutual funds and domestic stocks.
[2] For the Retirement Plan, this category is comprised of broadly diversified “active” mutual funds. The Acquired Retirement Plan assets in this category consist of pooled separate accounts invested in mutual funds.
[3] For the Retirement Plan, this category is comprised of broadly diversified “passive” and “active” mutual funds and shares of Southside Bancshares stock. The Acquired Retirement Plan assets in this category consist of pooled separate accounts invested in mutual funds.
[4] This category is comprised of pooled separate accounts invested in mutual funds and international stocks.
[5] For the Retirement Plan, this category is comprised of individual investment grade securities that are generally HTM. The Acquired Retirement Plan assets in this category consist of pooled separate accounts invested in mutual funds, bonds and fixed income securities.
[6] This category is comprised of a broadly diversified “passive” and “active” mutual funds.
[7] This category is comprised of a pooled separate account invested in commercial real estate and includes mortgage loans which are backed by the associated properties.
[8] This category is comprised of individual securities that are generally not HTM.