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EMPLOYEE BENEFIT PLANS (Tables)
 3 Months Ended
Mar. 31, 2019
Retirement Benefits [Abstract]  
Schedule of Net Periodic Pension Cost (Credit)
Net periodic pension credit includes the following components (in thousands):
 
Three Months Ended March 31,
 
2019
 
2018
 
(unaudited)
 
(unaudited)
Service cost
$
—

 
$
24

Interest cost
593

 
601

Expected return on plan assets
(607
)
 
(970
)
Amortization of net actuarial loss
8

 
—

Net periodic pension credit
$
(6
)
 
$
(345
)