Revenue Recognition (Table Text Block)	3 Months Ended
	Jun. 30, 2020
Revenue From Contract With Customer [Abstract]
Next five years and thereafter revenue	Year Ended March 31,     2021   2022   2023   2024   2025   Thereafter     (Unaudited)     (In thousands)                           Self-moving equipment rentals $ 4,531 $ - $ - $ - $ - $ - Property lease revenues   21,223   14,785   11,960   8,422   6,746   58,195 Total $ 25,754 $ 14,785 $ 11,960 $ 8,422 $ 6,746 $ 58,195
Disaggregation Of Revenue	Quarter Ended June 30,     2020   2019     (Unaudited)     (In thousands)           Revenues recognized over time: $ 44,938 $ 39,079 Revenues recognized at a point in time:   104,848   91,171 Total revenues recognized under ASC 606   149,786   130,250           Revenues recognized under ASC 842 or 840   774,694   865,204 Revenues recognized under ASC 944   45,775   48,046 Revenues recognized under ASC 320   16,982   35,749 Total revenues $ 987,237 $ 1,079,249