Related Party Transations (Table Text Block)	3 Months Ended	9 Months Ended
Dec. 31, 2022	Dec. 31, 2022
Related Party Revenue [Abstract]
Related Party Revenue	Quarter Ended December 31, 2022 2021 (Unaudited) (In thousands) U-Haul management fee revenue from Blackwater $ 7,170 $ 6,972 U-Haul management fee revenue from Mercury 2,910 2,679 $ 10,080 $ 9,651	Nine Months Ended December 31, 2022 2021 (Unaudited) (In thousands) U-Haul management fee revenue from Blackwater $ 22,726 $ 21,580 U-Haul management fee revenue from Mercury 5,770 5,267 $ 28,496 $ 26,847
Related Party costs and expenses	Quarter Ended December 31, 2022 2021 (Unaudited) (In thousands) U-Haul lease expenses to Blackwater $ 604 $ 604 U-Haul commission expenses to Blackwater 20,016 21,086 $ 20,620 $ 21,690	Nine Months Ended December 31, 2022 2021 (Unaudited) (In thousands) U-Haul lease expenses to Blackwater $ 1,812 $ 1,841 U-Haul commission expenses to Blackwater 71,283 70,502 $ 73,095 $ 72,343
Related party assets		December 31, March 31, 2022 2022 (Unaudited) (In thousands) U-Haul receivable from Blackwater $ 64,055 $ 41,364 U-Haul receivable from Mercury 11,961 5,708 Other (a) (467) 779 $ 75,549 $ 47,851

The Company has not provided financial or other support explicitly or implicitly during the period ended to any of these entities that it was not previously contractually required to provide. The carrying amount and the classification of assets and liabilities in the Company's balance sheet that related to the Company's variable interest in the Blackwater's entities are noted here, which approximate the maximum exposure to loss as a result of the Company's involvement with these entities.

No definition available.

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