Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Revenues:
Self-moving equipment rentals	$ 574,801	$ 541,473	$ 1,985,217	$ 1,899,519
Self-storage revenues	82,127	72,309	239,317	212,194
Self-moving and self-storage products and service sales	53,130	51,562	205,309	199,195
Property management fees	9,881	9,734	23,474	23,050
Life insurance premiums	38,957	41,279	116,910	123,064
Property and casualty insurance premiums	16,093	14,938	42,934	40,202
Net investment and interest income	28,821	22,833	82,507	75,754
Other revenue	39,072	36,327	147,825	139,353
Total revenues	842,882	790,455	2,843,493	2,712,331
Costs and expenses:
Operating expenses	438,071	389,352	1,347,477	1,172,647
Commission expenses	63,487	61,052	222,203	215,330
Cost of sales	33,995	32,537	124,456	116,851
Benefits and losses	45,168	45,403	139,997	139,242
Amortization of deferred policy acquisition costs	5,952	5,200	18,217	19,131
Lease expense	8,415	8,807	25,277	29,204
Depreciation, net of (gains) losses on disposals	137,061	118,541	396,540	323,785
Net gains on disposal of real estate	(192,404)	(2,418)	(192,223)	(2,377)
Total costs and expenses	539,745	658,474	2,081,944	2,013,813
Earnings from operations	303,137	131,981	761,549	698,518
Interest expense	(31,558)	(28,782)	(93,926)	(83,197)
Amortization on early extinguishment of debt		(499)		(499)
Pretax earnings	271,579	102,700	667,623	614,822
Income tax expense	257,315	(37,472)	112,117	(225,946)
Earnings available to common shareholders	$ 528,894	$ 65,228	$ 779,740	$ 388,876
Basic and diluted earnings per common share	$ 27.00	$ 3.33	$ 39.81	$ 19.85
Weighted average common shares outstanding: basic and diluted	19,589,218	19,586,694	19,588,558	19,586,389