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OTHER ACCRUED EXPENSES:
3 Months Ended
Jun. 30, 2018
Other Accrued Expenses [Abstract].  
OTHER ACCRUED EXPENSES
OTHER ACCRUED EXPENSES:
 
Other accrued expenses consist of the following (dollars in thousands):
 
 
June 30, 2018
 
March 31,
2018
Liabilities of non-qualified retirement plan
 
14,344

 
13,551

Other accrued expenses
 
44,594

 
42,314

Other accrued expenses
 
$
58,938

 
$
55,865