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Related Party Transactions (Narratives) (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Mar. 31, 2015
Sac Holdings [Member] |  |  |
Related party notes receivable: |  |  |
Notes receivable outstanding | $ 50,167 |  | $ 50,428
Related party costs and expenses: |  |  |
Expenses, related parties | 654 | $ 655 |
Commission expenses, generated from dealer agreement with related parties | 13,991 | 13,484 |
Private Mini [Member] |  |  |
Related party costs and expenses: |  |  |
Commission expenses, generated from dealer agreement with related parties | 980 | 862 |
Sac Holdings, Four Sac, Five Sac, Galaxy, and Private Mini [Member] |  |  |
Related party costs and expenses: |  |  |
Revenue, excluding dealer agreement commissions and expenses | 7,900 |  |
Expenses, related parties | 700 |  |
Cash flow, related party | 8,200 |  |
Revenue, generated by the dealer agreement from related parties | 68,900 |  |
Commission expenses, generated from dealer agreement with related parties | 15,000 |  |
Various Subsidiaries of Amerco [Member] | Sac Holdings [Member] |  |  |
Related party notes receivable: |  |  |
Cash interest payments | 1,200 | 1,600 |
Notes receivable outstanding | $ 50,400 |  |
Largest aggregate balance in reporting period |  | 50,200 |
Earliest maturity year | 2017 |  |
AMERCO and UHaul International, Inc [Member] | Private Mini [Member] |  |  |
Related party notes receivable: |  |  |
Cash interest payments | $ 1,100 | 1,300 |
Notes receivable outstanding | 56,500 |  |
Largest aggregate balance in reporting period |  | 56,500 |
AMERCO and UHaul International, Inc [Member] | Sac Holdings, Mercury, Four Sac, Five Sac, Galaxy and Private Mini [Member] |  |  |
Management fees revenue: |  |  |
Management fees received exclusive of reimbursed expenses | $ 9,000 | $ 9,300 |
AMERCO and UHaul International, Inc [Member] | Sac Holdings, Mercury, Four Sac, Five Sac, Galaxy and Private Mini [Member] | Minimum [Member] |  |  |
Management fees revenue: |  |  |
Management fee rate | 4.00% | 4.00% |
AMERCO and UHaul International, Inc [Member] | Sac Holdings, Mercury, Four Sac, Five Sac, Galaxy and Private Mini [Member] | Maximum [Member] |  |  |
Management fees revenue: |  |  |
Management fee rate | 10.00% | 10.00% |

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