Condensed Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Revenues:
Self-moving equipment rentals	$ 538,361		$ 511,626		$ 1,005,355		$ 958,174
Self-storage revenues	37,978		34,008		72,714		65,836
Self-moving and self-storage products and service sales	61,730		59,768		128,908		124,146
Property management fees	4,902		4,826		9,762		9,561
Life insurance premiums	47,667		46,197		94,093		97,196
Property and casualty insurance premiums	8,947		8,749		16,190		15,647
Net investment and interest income	13,053		15,901		25,310		33,164
Other revenue	28,679		22,106		54,401		42,422
Total revenues	741,317		703,181		1,406,733		1,346,146
Costs and expenses:
Operating expenses	310,214		294,340		593,607		566,315
Commission expenses	68,564		64,049		129,671		121,001
Cost of sales	30,912		32,446		63,139		65,224
Benefits and losses	45,672		44,462		91,750		94,392
Amortization of deferred policy acquisition costs	3,088		2,675		5,899		7,050
Lease expense	29,591		32,712		62,387		66,946
Depreciation net of (gains) losses on disposals	58,954	[1]	48,064	[1]	115,079	[1]	92,422	[1]
Total costs and expenses	546,995		518,748		1,061,532		1,013,350
Earnings from operations	194,322		184,433		345,201		332,796
Interest expense	(22,113)		(22,963)		(45,604)		(45,596)
Total pretax earnings (loss)	172,209		161,470		299,597		287,200
Income tax expense	(62,789)		(60,459)		(109,608)		(107,966)
Net earnings	109,420		101,011		189,989		179,234
Less: Excess of redemption value over carrying value of preferred shares redeemed	0		0		0		(5,908)
Less: Preferred stock dividends	0		164		0		(2,913)
Earnings available to common shareholders	$ 109,420		$ 101,175		$ 189,989		$ 170,413
Basic and diluted earnings per common share	$ 5.61		$ 5.20		$ 9.74		$ 8.75
Weighted average common shares outstanding: basic and diluted	19,512,550		19,470,948		19,507,456		19,465,530

[1] Depreciation, net of (gains) on disposals: Quarter Ending September 30, 2012 - (($5,532) and ($7,917), respectively). Six Months Ending September 30, 2012 - ((13,048) and ($17,627), respectively)