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FAIR VALUE OF FINANCIAL INSTRUMENTS: (Tables)
12 Months Ended
Mar. 31, 2019
Fair Value Disclosures [Abstract]  
Schedule of financial assets and liabilities measured at fair value
The following table presents the balances of assets measured at fair value as of March 31, 2019 and 2018 (dollars in thousands): 

As of March 31, 2019Level 1Level 2Level 3Total
Assets:    
Other current assets$14,970 $— $— $14,970 
Total assets$14,970 $— $— $14,970 
As of March 31, 2018Level 1Level 2Level 3Total
Assets:    
Other current assets$13,551 $— $— $13,551 
Total assets$13,551 $— $— $13,551