Accounting Policies (Inventories, net) (Details) - USD ($) $ in Thousands		Mar. 31, 2016	Mar. 31, 2015
Inventory, Net [Abstract]
Truck and trailer parts and accessories (a)	[1]	$ 68,665	$ 62,701
Hitches and towing components (b)	[2]	17,483	15,308
Moving supplies and propane (b)	[2]	8,668	7,866
Subtotal		94,816	85,875
Less: LIFO reserves		(13,463)	(15,019)
Less: excess and obsolete reserves		(1,597)	(1,384)
Total		$ 79,756	$ 69,472

[1] Primarily held for internal usage, including equipment manufacturing and repair

[2] Primarily held for retail sales