Revenue Recognition (Table Text Block)	12 Months Ended
	Mar. 31, 2023
Revenue From Contract With Customer [Abstract]
Lease schedule over next five years and thereafter	Year Ended March 31,     2024   2025   2026   2027   2028   Thereafter           (In thousands)                           Self-moving equipment rentals $ 5,750 $ – $ – $ – $ – $ – Property lease revenues   19,223   12,378   9,552   7,680   5,050   38,998 Total$ 24,973 $ 12,378 $ 9,552 $ 7,680 $ 5,050 $ 38,998
Disaggregation of revenue	Years Ended March 31,     2023   2022   2021           (In thousands)               Revenues recognized over time $   320,822 $   284,401 $   182,278 Revenues recognized at a point in time   425,584   414,985   396,600 Total revenues recognized under ASC 606   746,406   699,386   578,878               Revenues recognized under ASC 842   4,744,746   4,690,434   3,644,798 Revenues recognized under ASC 944   196,860   201,666   195,371 Revenues recognized under ASC 320   176,679   148,261   122,938 Total revenues$  5,864,691 $  5,739,747 $  4,541,985