Condensed Consolidated Balance Sheets (USD $) In Thousands	Sep. 30, 2011	Mar. 31, 2011
ASSETS:
Cash and cash equivalents	$ 448,159	$ 375,496
Reinsurance recoverables and trade receivables, net	227,750	205,371
Inventories, net	57,759	59,942
Prepaid expenses	48,900	57,624
Investments, fixed maturities and marketable equities	694,150	659,809
Investments, other	227,935	201,868
Deferred policy acquisition costs, net	55,626	52,870
Other assets	107,499	166,633
Related party assets	296,016	301,968
Subtotal assets	2,163,794	2,081,581
Property, plant and equipment, at cost:
Land	251,307	239,177
Buildings and improvements	1,052,203	1,024,669
Furniture and equipment	304,403	310,671
Property, plant and equipment (gross)	3,602,428	3,435,980
Less: Accumulated depreciation	(1,363,085)	(1,341,407)
Total property, plant and equipment	2,239,343	2,094,573
Total assets	4,403,137	4,176,154
Liabilities:
Accounts payable and accrued expenses	330,671	304,006
Notes, loans and leases payable	1,478,581	1,397,842
Policy benefits and losses, claims and loss expenses payable	961,514	927,376
Liabilities from investment contracts	238,116	246,717
Other policyholders' funds and liabilities	5,583	8,727
Deferred income	31,674	27,209
Deferred income taxes	350,656	271,257
Total liabilities	3,396,795	3,183,134
Commitments and contingencies (notes 4, 8, 9 and 10)
Stockholders' equity:
Additional paid-in capital	432,127	425,212
Accumulated other comprehensive loss	(66,221)	(46,467)
Retained earnings	1,310,415	1,140,002
Unearned employee stock ownership plan shares	(2,826)	(3,382)
Total stockholders' equity	1,006,342	993,020
Total liabilities and stockholders' equity	4,403,137	4,176,154
Rental trailers and other rental equipment
Property, plant and equipment, at cost:
Property subject to or available for operating lease, gross	254,522	249,700
Rental trucks
Property, plant and equipment, at cost:
Property subject to or available for operating lease, gross	1,739,993	1,611,763
Series A preferred stock, with no par value, 6,100,000 authorized; 6,100,000 and 5,791,700 shares issued and none and 5,791,700 outstanding as of September 30 and March 31, 2011
Stockholders' equity:
Preferred stock, value, issued
Series B preferred stock, with no par value, 100,000 shares authorized; none issued and outstanding as of September 30 and March 31, 2011
Stockholders' equity:
Preferred stock, value, issued
Series A common stock of $0.25 par value, 10,000,000 shares authorized; none issued and outstanding as of September 30 and March 31, 2011
Stockholders' equity:
Common stock, value, issued
Common stock of $0.25 par value, 150,000,000 shares authorized; 41,985,700 issued as of September 30 and March 31, 2011
Stockholders' equity:
Common stock, value, issued	10,497	10,497
Cost of common shares in treasury, net (22,377,912 shares as of September 30 and March 31, 2011)
Stockholders' equity:
Treasury stock, value	(525,653)	(525,653)
Cost of preferred shares in treasury, net (6,100,000 as of September 30, 2011 and 308,300 as of March 31, 2011)
Stockholders' equity:
Treasury stock, value	$ (151,997)	$ (7,189)