Condensed Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Revenues:
Self-moving equipment rentals	$ 436,207	$ 394,945	$ 1,556,787	$ 1,400,300
Self-storage revenues	46,120	39,111	133,791	111,825
Self-moving and self-storage products and service sales	47,045	44,491	183,115	173,399
Property management fees	7,133	6,085	17,586	15,847
Life insurance premiums	39,198	43,248	119,708	137,341
Property and casualty insurance premiums	12,219	9,816	31,052	26,006
Net investment and interest income	20,887	22,603	59,836	52,973
Other revenue	32,537	22,188	122,793	76,589
Total revenues	641,346	582,487	2,224,668	1,994,280
Costs and expenses:
Operating expenses	313,227	290,285	973,268	883,892
Commission expenses	55,573	51,130	202,578	180,801
Cost of sales	28,229	23,153	98,331	86,292
Benefits and losses	38,630	42,608	119,255	139,418
Amortization of deferred policy acquisition costs	4,457	3,391	14,197	9,290
Lease expense	24,468	27,575	77,293	89,962
Depreciation, net of (gains) losses on disposals	70,789	62,399	191,431	177,478
Total costs and expenses	535,373	500,541	1,676,353	1,567,133
Earnings (loss) from operations before equity in earnings of subsidiaries	105,973	81,946	548,315	427,147
Equity in earnings of subsidiaries	0	0	0	0
Earnings from operations	105,973	81,946	548,315	427,147
Interest expense	(23,607)	(22,076)	(70,053)	(67,680)
Pretax earnings	82,366	59,870	478,262	359,467
Income tax expense	(30,145)	(23,024)	(175,082)	(132,632)
Earnings available to common shareholders	$ 52,221	$ 36,846	$ 303,180	$ 226,835
Basic and diluted earnings per common share	$ 2.67	$ 1.89	$ 15.5	$ 11.62
Weighted average common shares outstanding: basic and diluted	19,563,663	19,523,794	19,554,641	19,512,974