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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Statement of Comprehensive Income [Abstract]        
Change in unrealized loss on available-for-sale-securities, tax $ 0 $ 0 $ 0 $ 0