Condensed Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues:
Self-moving equipment rentals	$ 598,931	$ 538,361	$ 1,120,580	$ 1,005,355
Self-storage revenues	45,572	37,978	87,671	72,714
Self-moving and self-storage products and service sales	65,379	61,730	136,070	128,908
Property management fees	5,292	4,902	10,453	9,762
Life insurance premiums	39,448	47,667	80,510	94,093
Property and casualty insurance premiums	10,867	8,947	18,833	16,190
Net investment and interest income	19,960	15,853	38,949	30,370
Other revenue	51,042	28,679	90,256	54,401
Total revenues	836,491	744,117	1,583,322	1,411,793
Costs and expenses:
Operating expenses	350,540	310,214	660,041	593,607
Commission expenses	78,378	68,564	147,005	129,671
Cost of sales	34,532	30,912	70,102	63,139
Benefits and losses	37,992	48,472	80,625	96,810
Amortization of deferred policy acquisition costs	6,057	3,088	9,740	5,899
Lease expense	25,818	29,591	52,825	62,387
Depreciation, net of (gains) losses on disposals	63,208	58,954	120,642	115,079
Total costs and expenses	596,525	549,795	1,140,980	1,066,592
Earnings (loss) from operations before equity in earnings of subsidiaries	239,966	194,322	442,342	345,201
Equity in earnings of subsidiaries	0	0	0	0
Earnings from operations	239,966	194,322	442,342	345,201
Interest expense	(23,118)	(22,113)	(46,446)	(45,604)
Pretax earnings	216,848	172,209	395,896	299,597
Income tax expense	(78,857)	(62,789)	(144,937)	(109,608)
Earnings available to common shareholders	$ 137,991	$ 109,420	$ 250,959	$ 189,989
Basic and diluted earnings per common share	$ 7.06	$ 5.61	$ 12.84	$ 9.74
Weighted average common shares outstanding: basic and diluted	19,554,633	19,512,550	19,550,128	19,507,456