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EMPLOYEE BENEFIT PLANS - Schedule of Allocation of Plan Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]      
Plan assets   $ 11,026 $ 10,622
Pension Plans      
Defined Benefit Plan Disclosure [Line Items]      
After tax components of accumulated other comprehensive loss, not yet recognized in net periodic pension cost $ 573    
Plan assets 9,990 11,026  
Pension Plans | Recurring      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 9,990 11,025  
Pension Plans | Recurring | Large-cap      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 1,730 2,143  
Pension Plans | Recurring | Mid-cap      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 477 612  
Pension Plans | Recurring | Small-cap      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 469 613  
Pension Plans | Recurring | International      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 845 1,150  
Pension Plans | Recurring | Fixed-income - core plus      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 3,945 3,896  
Pension Plans | Recurring | Intermediate duration      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 1,321 1,316  
Pension Plans | Recurring | Common stock      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 506 610  
Pension Plans | Recurring | Common/collective trusts - large-cap      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 469 555  
Pension Plans | Recurring | Cash equivalents - money market      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 228 130  
Pension Plans | Level 1 | Recurring      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 9,521 10,470  
Pension Plans | Level 1 | Recurring | Large-cap      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 1,730 2,143  
Pension Plans | Level 1 | Recurring | Mid-cap      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 477 612  
Pension Plans | Level 1 | Recurring | Small-cap      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 469 613  
Pension Plans | Level 1 | Recurring | International      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 845 1,150  
Pension Plans | Level 1 | Recurring | Fixed-income - core plus      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 3,945 3,896  
Pension Plans | Level 1 | Recurring | Intermediate duration      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 1,321 1,316  
Pension Plans | Level 1 | Recurring | Common stock      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 506 610  
Pension Plans | Level 1 | Recurring | Common/collective trusts - large-cap      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 0 0  
Pension Plans | Level 1 | Recurring | Cash equivalents - money market      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 228 130  
Pension Plans | Level 2 | Recurring      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 469 555  
Pension Plans | Level 2 | Recurring | Large-cap      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 0 0  
Pension Plans | Level 2 | Recurring | Mid-cap      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 0 0  
Pension Plans | Level 2 | Recurring | Small-cap      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 0 0  
Pension Plans | Level 2 | Recurring | Fixed-income - core plus      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 0 0  
Pension Plans | Level 2 | Recurring | Intermediate duration      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 0 0  
Pension Plans | Level 2 | Recurring | Common stock      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 0 0  
Pension Plans | Level 2 | Recurring | Common/collective trusts - large-cap      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 469 555  
Pension Plans | Level 2 | Recurring | Cash equivalents - money market      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets 0 0  
Non-qualified Supplemental Executive Retirement Plan      
Defined Benefit Plan Disclosure [Line Items]      
After tax components of accumulated other comprehensive loss, not yet recognized in net periodic pension cost 317    
Plan assets $ 0 $ 0 $ 0