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OTHER ACCRUED EXPENSES:
 3 Months Ended
Jun. 30, 2019
Other Accrued Expenses [Abstract].  
OTHER ACCRUED EXPENSES OTHER ACCRUED EXPENSES:
 
Other accrued expenses consist of the following (dollars in thousands):
June 30, 2019March 31, 2019
Liabilities of non-qualified retirement plan $15,263 $14,970 
Short-term lease liabilities8,443 — 
PDP performance plan liability19,500 — 
Other miscellaneous accrued expenses 27,723 25,946 
Other accrued expenses $70,929 $40,916