Accumulated Other Comprehensive Income (Loss)	6 Months Ended
	Sep. 30, 2020
Disclosure Text Block [Abstract]
6. Comprehensive Income (Loss)	16   amerco and consolidated subsidiaries notes to condensed consolidated financial statements - (continued) 6. Accumulated Other Comprehensive Income (Loss) A summary of accumulated other comprehensive income (loss) components, net of tax, were as follows:     Foreign Currency Translation   Unrealized Net Gain on Investments   Fair Market Value of Cash Flow Hedges   Postretirement Benefit Obligation Net Loss   Accumulated Other Comprehensive Income (Loss)     (Unaudited)     (In thousands) Balance at March 31, 2020 $ (47,235) $ 90,684 $ (6,196) $ (2,601) $ 34,652 Foreign currency translation   (2,627)   -   -   -   (2,627) Unrealized net gain on investments   -   45,340   -   -   45,340 Change in fair value of cash flow hedges   -   -   (497)   -   (497) Amounts reclassified into earnings on hedging activities   -   -   1,288   -   1,288 Other comprehensive income (loss)   (2,627)   45,340   791   -   43,504 Balance at September 30, 2020 $ (49,862) $ 136,024 $ (5,405) $ (2,601) $ 78,156