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RETIREMENT PLANS (Tables)
3 Months Ended
Jun. 30, 2018
Retirement Benefits [Abstract]  
Schedule of Net Pension Benefit
The following tables set forth the combined net pension benefit recognized in our condensed consolidated financial statements for all plans (in thousands):
Three Months Ended June 30, 
2018 2017 
Service cost, benefits earned during the period $19 $14 
Interest cost on projected benefit obligation 528 636 
Expected return on assets (663)(980)
Amortization of net actuarial loss 10 
Net pension benefit $(106)$(323)