Accounting Policies (Table Text Block)	12 Months Ended
Mar. 31, 2022
Inventory Disclosure [Abstract]
Inventories, net	March 31, 2022 2021 (In thousands) Truck and trailer parts and accessories (a) $ 148,237 $ 95,976 Hitches and towing components (b) 32,508 19,972 Moving supplies and propane (b) 16,623 12,877 Subtotal 197,368 128,825 Less: LIFO reserves (37,400) (21,832) Less: excess and obsolete reserves (1,080) (1,416) Total $ 158,888 $ 105,577 (a) Primarily held for internal usage, including equipment manufacturing and repair (b) Primarily held for retail sales

The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-URI http://asc.fasb.org/topic&trid=2126998

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