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Consolidating financial information by industry segment (Statements of Operations) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Jun. 30, 2016 | Jun. 30, 2015
Revenues: |  |  |  |  |
Self-moving equipment rentals |  | $ 646,336 |  | $ 629,286 |
Self-storage revenues |  | 67,722 |  | 57,191 |
Self-moving and self-storage products and service sales |  | 77,303 |  | 77,258 |
Property management fees |  | 6,604 |  | 6,111 |
Life insurance premiums |  | 40,892 |  | 40,266 |
Property and casualty insurance premiums |  | 11,255 |  | 10,556 |
Net investment and interest income |  | 27,549 |  | 21,972 |
Other revenue |  | 45,748 |  | 42,165 |
Total revenues |  | 923,409 |  | 884,805 |
Costs and expenses: |  |  |  |  |
Operating expenses |  | 385,082 |  | 363,169 |
Commission expenses |  | 73,816 |  | 73,058 |
Cost of sales |  | 43,362 |  | 41,255 |
Benefits and losses |  | 47,003 |  | 43,391 |
Amortization of deferred policy acquisition costs |  | 7,942 |  | 4,778 |
Lease expense |  | 11,048 |  | 17,064 |
Depreciation, net of (gains) losses on disposals |  | 95,381 |  | 50,982 |
Total costs and expenses |  | 663,634 |  | 593,697 |
Earnings (loss) from operations before equity in earnings of subsidiaries |  | 259,775 |  | 291,108 |
Equity in earnings of subsidiaries |  |  |  |  |
Earnings from operations |  | 259,775 |  | 291,108 |
Interest expense |  | (26,644) |  | (22,100) |
Pretax earnings |  | 233,131 |  | 269,008 |
Income tax expense |  | (85,958) |  | (97,723) |
Earnings available to common shareholders |  | 147,173 |  | 171,285 |
Operating Segments [Member] | Moving and Storage Consolidations [Member] |  |  |  |  |
Revenues: |  |  |  |  |
Self-moving equipment rentals |  | 647,116 |  | 630,039 |
Self-storage revenues |  | 67,722 |  | 57,191 |
Self-moving and self-storage products and service sales |  | 77,303 |  | 77,258 |
Property management fees |  | 6,604 |  | 6,111 |
Life insurance premiums |  |  |  |  |
Property and casualty insurance premiums |  |  |  |  |
Net investment and interest income |  | 2,112 |  | 2,817 |
Other revenue |  | 44,974 |  | 41,424 |
Total revenues |  | 845,831 |  | 814,840 |
Costs and expenses: |  |  |  |  |
Operating expenses |  | 373,672 |  | 351,855 |
Commission expenses |  | 73,816 |  | 73,058 |
Cost of sales |  | 43,362 |  | 41,255 |
Benefits and losses |  |  |  |  |
Amortization of deferred policy acquisition costs |  |  |  |  |
Lease expense |  | 11,095 |  | 17,111 |
Depreciation, net of (gains) losses on disposals |  | 95,381 |  | 50,982 |
Total costs and expenses |  | 597,326 |  | 534,261 |
Earnings (loss) from operations before equity in earnings of subsidiaries |  | 248,505 |  | 280,579 |
Equity in earnings of subsidiaries |  | 7,574 |  | 6,950 |
Earnings from operations |  | 256,079 |  | 287,529 |
Interest expense |  | (26,793) |  | (22,260) |
Pretax earnings |  | 229,286 |  | 265,269 |
Income tax expense |  | (82,113) |  | (93,984) |
Earnings available to common shareholders |  | 147,173 |  | 171,285 |
Operating Segments [Member] | Property and Casualty Insurance [Member] |  |  |  |  |
Revenues: |  |  |  |  |
Self-moving equipment rentals |  |  | [1] |  | [2]
Self-storage revenues |  |  | [1] |  | [2]
Self-moving and self-storage products and service sales |  |  | [1] |  | [2]
Property management fees |  |  | [1] |  | [2]
Life insurance premiums |  |  | [1] |  | [2]
Property and casualty insurance premiums |  | 11,255 | [1] | 10,556 | [2]
Net investment and interest income |  | 5,630 | [1] | 4,334 | [2]
Other revenue |  |  | [1] |  | [2]
Total revenues |  | 16,885 | [1] | 14,890 | [2]
Costs and expenses: |  |  |  |  |
Operating expenses |  | 6,285 | [1] | 6,339 | [2]
Commission expenses |  |  | [1] |  | [2]
Cost of sales |  |  | [1] |  | [2]
Benefits and losses |  | 3,097 | [1] | 2,073 | [2]
Amortization of deferred policy acquisition costs |  |  | [1] |  | [2]
Lease expense |  |  | [1] |  | [2]
Depreciation, net of (gains) losses on disposals |  |  | [1] |  | [2]
Total costs and expenses |  | 9,382 | [1] | 8,412 | [2]
Earnings (loss) from operations before equity in earnings of subsidiaries |  | 7,503 | [1] | 6,478 | [2]
Equity in earnings of subsidiaries |  |  | [1] |  | [2]
Earnings from operations |  | 7,503 | [1] | 6,478 | [2]
Interest expense |  |  | [1] |  | [2]
Pretax earnings |  | 7,503 | [1] | 6,478 | [2]
Income tax expense |  | (2,626) | [1] | (2,267) | [2]
Earnings available to common shareholders |  | 4,877 | [1] | 4,211 | [2]
Operating Segments [Member] | Life Insurance [Member] |  |  |  |  |
Revenues: |  |  |  |  |
Self-moving equipment rentals |  |  | [1] |  | [2]
Self-storage revenues |  |  | [1] |  | [2]
Self-moving and self-storage products and service sales |  |  | [1] |  | [2]
Property management fees |  |  | [1] |  | [2]
Life insurance premiums |  | 40,892 | [1] | 40,266 | [2]
Property and casualty insurance premiums |  |  | [1] |  | [2]
Net investment and interest income |  | 19,994 | [1] | 15,020 | [2]
Other revenue |  | 909 | [1] | 783 | [2]
Total revenues |  | 61,795 | [1] | 56,069 | [2]
Costs and expenses: |  |  |  |  |
Operating expenses |  | 6,031 | [1] | 5,762 | [2]
Commission expenses |  |  | [1] |  | [2]
Cost of sales |  |  | [1] |  | [2]
Benefits and losses |  | 43,906 | [1] | 41,318 | [2]
Amortization of deferred policy acquisition costs |  | 7,942 | [1] | 4,778 | [2]
Lease expense |  |  | [1] |  | [2]
Depreciation, net of (gains) losses on disposals |  |  | [1] |  | [2]
Total costs and expenses |  | 57,879 | [1] | 51,858 | [2]
Earnings (loss) from operations before equity in earnings of subsidiaries |  | 3,916 | [1] | 4,211 | [2]
Equity in earnings of subsidiaries |  |  | [1] |  | [2]
Earnings from operations |  | 3,916 | [1] | 4,211 | [2]
Interest expense |  |  | [1] |  | [2]
Pretax earnings |  | 3,916 | [1] | 4,211 | [2]
Income tax expense |  | (1,219) | [1] | (1,472) | [2]
Earnings available to common shareholders |  | 2,697 | [1] | 2,739 | [2]
Consolidation, Eliminations [Member] |  |  |  |  |
Revenues: |  |  |  |  |
Self-moving equipment rentals | [3] | (780) |  | (753) |
Self-storage revenues |  |  |  |  |
Self-moving and self-storage products and service sales |  |  |  |  |
Property management fees |  |  |  |  |
Life insurance premiums |  |  |  |  |
Property and casualty insurance premiums |  |  |  |  |
Net investment and interest income | [4] | (187) |  | (199) |
Other revenue | [4] | (135) |  | (42) |
Total revenues |  | (1,102) |  | (994) |
Costs and expenses: |  |  |  |  |
Operating expenses | [3],[4] | (906) |  | (787) |
Commission expenses |  |  |  |  |
Cost of sales |  |  |  |  |
Benefits and losses |  |  |  |  |
Amortization of deferred policy acquisition costs |  |  |  |  |
Lease expense | [4] | (47) |  | (47) |
Depreciation, net of (gains) losses on disposals |  |  |  |  |
Total costs and expenses |  | (953) |  | (834) |
Earnings (loss) from operations before equity in earnings of subsidiaries |  | (149) |  | (160) |
Equity in earnings of subsidiaries | [5] | (7,574) |  | (6,950) |
Earnings from operations |  | (7,723) |  | (7,110) |
Interest expense | [4] | 149 |  | 160 |
Pretax earnings |  | (7,574) |  | (6,950) |
Income tax expense |  |  |  |  |
Earnings available to common shareholders |  | $ (7,574) |  | $ (6,950) |
[1] | Balances for the quarter ended March 31, 2016
[2] | Balances for the quarter ended March 31, 2015
[3] | Eliminate intercompany premiums
[4] | Eliminate intercompany lease / interest income
[5] | Eliminate equity in earnings of subsidiaries

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- Definition This company-specific concept is a combination of two separate concepts in the US-GAAP taxonomy. (1) Other Real Estate Revenue: "Other real estate revenue not otherwise specified in the taxonomy." (2) Contracts Revenue: "Revenue earned during the period arising from products sold or services provided under the terms of a contract, not elsewhere specified in the taxonomy. May include government contracts, construction contracts, and any other contract related to a particular project or product. + References No definition available. + Details
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- Definition Aggregate revenue during the period from sale of goods in the normal course of business, before deducting returns, allowances and discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(a)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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