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Employee Benefit Plans - Schedule of Fair Value of Plan Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets $ 48,167 $ 43,824
Quoted Prices in Active Markets for Identical Assets (Level 1)    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Significant Other Observable Inputs (Level 2)    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 48,167 43,824
Significant Unobservable Inputs (Level 3)    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Cash and cash equivalents    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 337 274
Cash and cash equivalents | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Cash and cash equivalents | Significant Other Observable Inputs (Level 2)    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 337 274
Cash and cash equivalents | Significant Unobservable Inputs (Level 3)    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fixed income funds    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 47,830 43,550
Fixed income funds | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fixed income funds | Significant Other Observable Inputs (Level 2)    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 47,830 43,550
Fixed income funds | Significant Unobservable Inputs (Level 3)    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets $ 0 $ 0