XML 72 R45.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
SHORT-TERM INVESTMENTS (Contracted Maturities) (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Mar. 31, 2019
Debt Securities, Available-for-sale, Maturity, Amortized Cost, Rolling Maturity [Abstract]    
Amortized cost, Due in 1 year or less $ 576,141  
Amortized cost, Due in 1-2 years 122,083  
Cost or Amortized Cost 698,224 $ 743,892
Debt Securities, Available-for-sale, Maturity, Fair Value, Rolling Maturity [Abstract]    
Fair value, Due in 1 year or less 576,830  
Fair value, Due in 1-2 years 122,439  
Total fair value $ 699,269 $ 744,485