Accounting Policies (Table Text Block)	12 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]
Inventories, net	March 31, 2021 2020 (In thousands) Truck and trailer parts and accessories (a) $ 95,976 $ 88,138 Hitches and towing components (b) 19,972 23,070 Moving supplies and propane (b) 12,877 11,824 Subtotal 128,825 123,032 Less: LIFO reserves (21,832) (18,886) Less: excess and obsolete reserves (1,416) (3,063) Total $ 105,577 $ 101,083 (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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