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Consolidating financial information by industry segment (Statements of Operations) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Revenues: |  |  |  |  |  |  |  |  |
Self-moving equipment rentals |  | $ 711,710 |  | $ 698,219 |  | $ 1,358,046 |  | $ 1,327,505 |
Self-storage revenues |  | 72,163 |  | 62,060 |  | 139,885 |  | 119,251 |
Self-moving and self-storage products and service sales |  | 70,330 |  | 70,703 |  | 147,633 |  | 147,961 |
Property management fees |  | 6,712 |  | 6,320 |  | 13,316 |  | 12,431 |
Life insurance premiums |  | 40,893 |  | 40,515 |  | 81,785 |  | 80,781 |
Property and casualty insurance premiums |  | 14,009 |  | 13,372 |  | 25,264 |  | 23,928 |
Net investment and interest income |  | 25,816 |  | 22,151 |  | 53,365 |  | 44,123 |
Other revenue |  | 57,278 |  | 49,563 |  | 103,026 |  | 91,728 |
Total revenues |  | 998,911 |  | 962,903 |  | 1,922,320 |  | 1,847,708 |
Costs and expenses: |  |  |  |  |  |  |  |  |
Operating expenses |  | 398,213 |  | 406,282 |  | 783,295 |  | 769,451 |
Commission expenses |  | 80,462 |  | 80,799 |  | 154,278 |  | 153,857 |
Cost of sales |  | 40,952 |  | 39,881 |  | 84,314 |  | 81,136 |
Benefits and losses |  | 46,836 |  | 43,428 |  | 93,839 |  | 86,819 |
Amortization of deferred policy acquisition costs |  | 5,989 |  | 5,643 |  | 13,931 |  | 10,421 |
Lease expense |  | 9,349 |  | 12,724 |  | 20,397 |  | 29,788 |
Depreciation, net of (gains) losses on disposals |  | 109,904 |  | 63,078 |  | 205,285 |  | 114,060 |
Total costs and expenses |  | 691,705 |  | 651,835 |  | 1,355,339 |  | 1,245,532 |
Earnings (loss) from operations before equity in earnings of subsidiaries |  | 307,206 |  | 311,068 |  | 566,981 |  | 602,176 |
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  |
Earnings from operations |  | 307,206 |  | 311,068 |  | 566,981 |  | 602,176 |
Interest expense |  | (28,215) |  | (23,973) |  | (54,859) |  | (46,073) |
Pretax earnings |  | 278,991 |  | 287,095 |  | 512,122 |  | 556,103 |
Income tax expense |  | (102,516) |  | (103,716) |  | (188,474) |  | (201,439) |
Earnings available to common shareholders |  | 176,475 |  | 183,379 |  | 323,648 |  | 354,664 |
Operating Segments [Member] | Moving and Storage Consolidations [Member] |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |
Self-moving equipment rentals |  | 712,739 |  | 699,184 |  | 1,359,855 |  | 1,329,223 |
Self-storage revenues |  | 72,163 |  | 62,060 |  | 139,885 |  | 119,251 |
Self-moving and self-storage products and service sales |  | 70,330 |  | 70,703 |  | 147,633 |  | 147,961 |
Property management fees |  | 6,712 |  | 6,320 |  | 13,316 |  | 12,431 |
Life insurance premiums |  |  |  |  |  |  |  |  |
Property and casualty insurance premiums |  |  |  |  |  |  |  |  |
Net investment and interest income |  | 2,353 |  | 1,845 |  | 4,465 |  | 4,662 |
Other revenue |  | 56,103 |  | 48,182 |  | 101,077 |  | 89,606 |
Total revenues |  | 920,400 |  | 888,294 |  | 1,766,231 |  | 1,703,134 |
Costs and expenses: |  |  |  |  |  |  |  |  |
Operating expenses |  | 386,527 |  | 394,660 |  | 760,199 |  | 746,515 |
Commission expenses |  | 80,462 |  | 80,799 |  | 154,278 |  | 153,857 |
Cost of sales |  | 40,952 |  | 39,881 |  | 84,314 |  | 81,136 |
Benefits and losses |  |  |  |  |  |  |  |  |
Amortization of deferred policy acquisition costs |  |  |  |  |  |  |  |  |
Lease expense |  | 9,395 |  | 12,770 |  | 20,490 |  | 29,881 |
Depreciation, net of (gains) losses on disposals |  | 109,904 |  | 63,078 |  | 205,285 |  | 114,060 |
Total costs and expenses |  | 627,240 |  | 591,188 |  | 1,224,566 |  | 1,125,449 |
Earnings (loss) from operations before equity in earnings of subsidiaries |  | 293,160 |  | 297,106 |  | 541,665 |  | 577,685 |
Equity in earnings of subsidiaries |  | 9,305 |  | 9,179 |  | 16,879 |  | 16,129 |
Earnings from operations |  | 302,465 |  | 306,285 |  | 558,544 |  | 593,814 |
Interest expense |  | (28,361) |  | (24,133) |  | (55,154) |  | (46,393) |
Pretax earnings |  | 274,104 |  | 282,152 |  | 503,390 |  | 547,421 |
Income tax expense |  | (97,629) |  | (98,773) |  | (179,742) |  | (192,757) |
Earnings available to common shareholders |  | 176,475 |  | 183,379 |  | 323,648 |  | 354,664 |
Operating Segments [Member] | Property and Casualty Insurance [Member] |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |
Self-moving equipment rentals |  |  | [1] |  | [2] |  | [3] |  | [4]
Self-storage revenues |  |  | [1] |  | [2] |  | [3] |  | [4]
Self-moving and self-storage products and service sales |  |  | [1] |  | [2] |  | [3] |  | [4]
Property management fees |  |  | [1] |  | [2] |  | [3] |  | [4]
Life insurance premiums |  |  | [1] |  | [2] |  | [3] |  | [4]
Property and casualty insurance premiums |  | 14,009 | [1] | 13,372 | [2] | 25,264 | [3] | 23,928 | [4]
Net investment and interest income |  | 3,878 | [1] | 3,253 | [2] | 9,508 | [3] | 7,587 | [4]
Other revenue |  |  | [1] |  | [2] |  | [3] |  | [4]
Total revenues |  | 17,887 | [1] | 16,625 | [2] | 34,772 | [3] | 31,515 | [4]
Costs and expenses: |  |  |  |  |  |  |  |  |
Operating expenses |  | 7,220 | [1] | 7,089 | [2] | 13,505 | [3] | 13,428 | [4]
Commission expenses |  |  | [1] |  | [2] |  | [3] |  | [4]
Cost of sales |  |  | [1] |  | [2] |  | [3] |  | [4]
Benefits and losses |  | 3,573 | [1] | 3,471 | [2] | 6,670 | [3] | 5,544 | [4]
Amortization of deferred policy acquisition costs |  |  | [1] |  | [2] |  | [3] |  | [4]
Lease expense |  |  | [1] |  | [2] |  | [3] |  | [4]
Depreciation, net of (gains) losses on disposals |  |  | [1] |  | [2] |  | [3] |  | [4]
Total costs and expenses |  | 10,793 | [1] | 10,560 | [2] | 20,175 | [3] | 18,972 | [4]
Earnings (loss) from operations before equity in earnings of subsidiaries |  | 7,094 | [1] | 6,065 | [2] | 14,597 | [3] | 12,543 | [4]
Equity in earnings of subsidiaries |  |  | [1] |  | [2] |  | [3] |  | [4]
Earnings from operations |  | 7,094 | [1] | 6,065 | [2] | 14,597 | [3] | 12,543 | [4]
Interest expense |  |  | [1] |  | [2] |  | [3] |  | [4]
Pretax earnings |  | 7,094 | [1] | 6,065 | [2] | 14,597 | [3] | 12,543 | [4]
Income tax expense |  | (2,406) | [1] | (2,123) | [2] | (5,032) | [3] | (4,390) | [4]
Earnings available to common shareholders |  | 4,688 | [1] | 3,942 | [2] | 9,565 | [5] | 8,153 | [6]
Operating Segments [Member] | Life Insurance [Member] |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |
Self-moving equipment rentals |  |  | [1] |  | [2] |  | [3] |  | [4]
Self-storage revenues |  |  | [1] |  | [2] |  | [3] |  | [4]
Self-moving and self-storage products and service sales |  |  | [1] |  | [2] |  | [3] |  | [4]
Property management fees |  |  | [1] |  | [2] |  | [3] |  | [4]
Life insurance premiums |  | 40,893 | [1] | 40,515 | [2] | 81,785 | [3] | 80,781 | [4]
Property and casualty insurance premiums |  |  | [1] |  | [2] |  | [3] |  | [4]
Net investment and interest income |  | 19,767 | [1] | 17,248 | [2] | 39,761 | [3] | 32,268 | [4]
Other revenue |  | 1,301 | [1] | 1,424 | [2] | 2,210 | [3] | 2,207 | [4]
Total revenues |  | 61,961 | [1] | 59,187 | [2] | 123,756 | [3] | 115,256 | [4]
Costs and expenses: |  |  |  |  |  |  |  |  |
Operating expenses |  | 5,611 | [1] | 5,530 | [2] | 11,642 | [3] | 11,292 | [4]
Commission expenses |  |  | [1] |  | [2] |  | [3] |  | [4]
Cost of sales |  |  | [1] |  | [2] |  | [3] |  | [4]
Benefits and losses |  | 43,263 | [1] | 39,957 | [2] | 87,169 | [3] | 81,275 | [4]
Amortization of deferred policy acquisition costs |  | 5,989 | [1] | 5,643 | [2] | 13,931 | [3] | 10,421 | [4]
Lease expense |  |  | [1] |  | [2] |  | [3] |  | [4]
Depreciation, net of (gains) losses on disposals |  |  | [1] |  | [2] |  | [3] |  | [4]
Total costs and expenses |  | 54,863 | [1] | 51,130 | [2] | 112,742 | [3] | 102,988 | [4]
Earnings (loss) from operations before equity in earnings of subsidiaries |  | 7,098 | [1] | 8,057 | [2] | 11,014 | [3] | 12,268 | [4]
Equity in earnings of subsidiaries |  |  | [1] |  | [2] |  | [3] |  | [4]
Earnings from operations |  | 7,098 | [1] | 8,057 | [2] | 11,014 | [3] | 12,268 | [4]
Interest expense |  |  | [1] |  | [2] |  | [3] |  | [4]
Pretax earnings |  | 7,098 | [1] | 8,057 | [2] | 11,014 | [3] | 12,268 | [4]
Income tax expense |  | (2,481) | [1] | (2,820) | [2] | (3,700) | [3] | (4,292) | [4]
Earnings available to common shareholders |  | 4,617 | [1] | 5,237 | [2] | 7,314 | [5] | 7,976 | [6]
Consolidation, Eliminations [Member] |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |
Self-moving equipment rentals | [7] | (1,029) |  | (965) |  | (1,809) |  | (1,718) |
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 | [8] | (182) |  | (195) |  | (369) |  | (394) |
Other revenue | [8] | (126) |  | (43) |  | (261) |  | (85) |
Total revenues |  | (1,337) |  | (1,203) |  | (2,439) |  | (2,197) |
Costs and expenses: |  |  |  |  |  |  |  |  |
Operating expenses | [7],[8] | (1,145) |  | (997) |  | (2,051) |  | (1,784) |
Commission expenses |  |  |  |  |  |  |  |  |
Cost of sales |  |  |  |  |  |  |  |  |
Benefits and losses |  |  |  |  |  |  |  |  |
Amortization of deferred policy acquisition costs |  |  |  |  |  |  |  |  |
Lease expense | [8] | (46) |  | (46) |  | (93) |  | (93) |
Depreciation, net of (gains) losses on disposals |  |  |  |  |  |  |  |  |
Total costs and expenses |  | (1,191) |  | (1,043) |  | (2,144) |  | (1,877) |
Earnings (loss) from operations before equity in earnings of subsidiaries |  | (146) |  | (160) |  | (295) |  | (320) |
Equity in earnings of subsidiaries | [9] | (9,305) |  | (9,179) |  | (16,879) |  | (16,129) |
Earnings from operations |  | (9,451) |  | (9,339) |  | (17,174) |  | (16,449) |
Interest expense | [8] | 146 |  | 160 |  | 295 |  | 320 |
Pretax earnings |  | (9,305) |  | (9,179) |  | (16,879) |  | (16,129) |
Income tax expense |  |  |  |  |  |  |  |  |
Earnings available to common shareholders |  | $ (9,305) |  | $ (9,179) |  | $ (16,879) |  | $ (16,129) |
[1] | Balances for the quarter ended June 30, 2016
[2] | Balances for the quarter ended June 30, 2015
[3] | Balances for the six months ended June 30, 2016
[4] | Balances for the six months ended June 30, 2015
[5] | Balance for the period ended June 30, 2016
[6] | Balance for the period ended June 30, 2015
[7] | Eliminate intercompany premiums
[8] | Eliminate intercompany lease / interest income
[9] | Eliminate equity in earnings of subsidiaries

X
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