Statement of Financial Position [Abstract] Statement [Table] Property, Plant and Equipment by Type [Axis] Property, Plant and Equipment, Type [Domain] Rental Trailers and Other Rental Equipment [Member] Rental trailers and other rental equipment Rental Trucks [Member] Rental trucks Class of Stock [Axis] Class of Stock [Domain] Series A Preferred Stock [Member] 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 December 31 and March 31, 2011 Series B Preferred Stock [Member] Series B preferred stock, with no par value, 100,000 shares authorized; none issued and outstanding as of December 31 and March 31, 2011 Common Stock [Member] Common stock of $0.25 par value, 150,000,000 shares authorized; 41,985,700 issued as of December 31 and March 31, 2011 Statement [Line Items] Assets [Abstract] ASSETS: Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Reinsurance Recoverables and Trade Receivables, Net Reinsurance recoverables and trade receivables, net This extended concept is a combination of two concepts on the us-gaap taxonomy. 1. Reinsurance Recoverables defined as..."The known and estimated amount recoverable as of the balance sheet date from reinsurers for claims paid or incurred by the ceding insurer and associated claims settlement expenses, including estimated amounts for claims incurred but not reported, and policy benefits, net of any related valuation allowance." 2. Receivables, Net, Current defined as..."The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowance established for the purpose of reducing such receivables to an amount that approximates their net realizable value" Other Inventory, Supplies Inventories, net Marketable Securities Investments, fixed maturities and marketable equities Investments Investments, other Deferred Policy Acquisition Costs and Value of Business Acquired Deferred policy acquisition costs, net Deposits Assets Other assets Due from Related Parties Related party assets Subtotal Assets Subtotal assets Property, Plant and Equipment, Net [Abstract] Property, plant and equipment, at cost: Land Buildings and Improvements, Gross Buildings and improvements Furniture and Fixtures, Gross Furniture and equipment Property Subject to or Available for Operating Lease, Gross Property subject to or available for operating lease, gross Property, Plant and Equipment, Gross Property, plant and equipment (gross) Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less: Accumulated depreciation Property, Plant and Equipment, Net Total property, plant and equipment Total assets Liabilities and Equity [Abstract] LIABILITIES AND STOCKHOLDERS' EQUITY Total liabilities Accounts Payable and Accrued Liabilities Accounts payable and accrued expenses Debt and Capital Lease Obligations Notes, loans and leases payable Liability for Future Policy Benefits and Unpaid Claims and Claims Adjustment Expense Policy benefits and losses, claims and loss expenses payable Liability for Future Policy Benefits, Individual and Group Annuities and Supplementary Contracts Liabilities from investment contracts Policyholder Funds Other policyholders' funds and liabilities Deferred Revenue Deferred income Deferred Income Tax Liabilities Deferred income taxes Liabilities [Abstract] Liabilities: Liabilities Commitments and Contingencies Commitments and contingencies (notes 4, 9, 10 and 11) Stockholders' Equity Attributable to Parent [Abstract] Stockholders' equity: Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Preferred stock: Preferred Stock, Value, Issued Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Common stock: Common Stock, Value, Issued Additional Paid in Capital Additional paid-in capital Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive loss Retained Earnings (Accumulated Deficit) Retained earnings Treasury Stock, Value Treasury stock, value Unearned ESOP Shares Unearned employee stock ownership plan shares Stockholders' Equity Attributable to Parent Total stockholders' equity Liabilities and Equity Total liabilities and stockholders' equity Preferred Stock [Member] Preferred Stock With or Without Par Value Authorized [Member] This member further defines the concepts that follow. In this way, share concepts can be repeated and are unique to the taxonomy. Series Common Stock [Member] Create a common stock member to incorporate the value shown in the heading of this section. Preferred Stock, Shares Authorized Series common stock, with or without par value, 150,000,000 shares authorized: Preferred Stock, Shares Issued Preferred Stock, Shares Outstanding Preferred Stock, No Par Value Common Stock, Shares Authorized Common Stock, Shares, Issued Common Stock, Par or Stated Value Per Share Treasury Stock, Number of Shares and Restriction Disclosures [Abstract] Treasury stock: Treasury Stock, Shares Income Statement [Abstract] Statement, Scenario [Axis] Scenario, Unspecified [Domain] Revenues [Abstract] Operating Leases, Income Statement, Lease Revenue Self-moving equipment rentals Self Storage Revenues Self-storage revenues 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. Sales Revenue, Goods, Gross Self-moving and self-storage products and service sales Premiums Earned, Net, Life Life insurance premiums Premiums Earned, Net, Property and Casualty Property and casualty insurance premiums Investment Income, Interest and Dividend Net investment and interest income Other Income Other revenue Revenues Total revenues Operating Costs and Expenses [Abstract] Costs and expenses: Operating Expenses Operating expenses Sales Commissions and Fees Commission expenses Cost of Goods Sold Cost of sales Deferred Policy Acquisition Cost, Amortization Expense Amortization of deferred policy acquisition costs Depreciation Net of Gains Losses on Disposals This company-specific concept is a combination of two us-gaap taxonomy concepts. 1. Depreciation: "The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation." 2. Gain (Loss) on Disposition of Assets: "the gains and losses included in earnings resulting from the sale or disposal of tangible assets." Costs and Expenses Total costs and expenses Interest Expense Interest expense Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Pretax earnings Income Tax Expense (Benefit) Income tax expense Net Income (Loss) Attributable to Parent Net earnings Preferred Stock Redemption Premium Less: Excess of redemption value over carrying value of preferred shares redeemed Dividends, Preferred Stock, Cash Less: Preferred stock dividends Net Income (Loss) Available to Common Stockholders, Basic Earnings available to common shareholders Income (Loss) from Continuing Operations, Per Basic Share Basic and diluted earnings per common share Gain (Loss) on Investments [Abstract] Depreciation: Gain (Loss) on Disposition of Assets Net of (gains) on sale of real and personal property Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Foreign currency translation (net of tax) Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Unrealized gain (loss) on investments (net of tax) Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax Change in fair value of cash flow hedges (net of tax) Other Comprehensive Income (Loss), Finalization of Pension and Non-Pension Postretirement Plan Valuation, Net of Tax Postretirement benefit obligation gain (loss) (net of tax) Net earnings Common stock, par or stated value per share Statement of Income and Comprehensive Income [Abstract] Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent [Abstract] Net earnings Net earnings Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Comprehensive income (loss) (net of tax): Other Comprehensive Income (Loss) [Abstract] Other comprehensive income (loss): List of other comprehensive income items not related to net earnings Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax Foreign currency translation (pretax) Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax Foreign currency translation (tax effect) Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax Unrealized gain (loss) on investments (pretax) Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax Unrealized gain (loss) on investments (tax effect) Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax Change in fair value of cash flow hedges (pretax) Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax Effect Change in fair value of cash flow hedges (tax effect) Other Comprehensive Income (Loss), Finalization of Pension and Non-Pension Postretirement Plan Valuation, before Tax Postretirement benefit obligation gain (loss) (pretax) Other Comprehensive Income (Loss), Finalization of Pension and Non-Pension Postretirement Plan Valuation, Tax Postretirement benefit obligation gain (loss) (tax effect) Other Comprehensive Income (Loss), before Tax Total comprehensive income (loss) (pretax) Other Comprehensive Income (Loss), Tax Total comprehensive income (loss) (tax effect) Statement of Cash Flows [Abstract] Fixed Maturities [Member] Equity Securities [Member] Equity security investments Fixed maturities investments Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flow from operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net earnings to cash provided by operations: Provision for Doubtful Accounts Change in allowance for losses on trade receivables Gain (Loss) on Sale of Other Investments Increase (Decrease) in Operating Assets [Abstract] Net change in other operating assets and liabilities: Increase (Decrease) in Prepaid Expense Prepaid expenses Increase (Decrease) in Other Operating Assets Other assets Increase (Decrease) in Other Insurance Liabilities Policy benefits and losses, claims and loss expenses payable Increase (Decrease) in Other Policyholder Funds Other policyholders' funds and liabilities Increase (Decrease) in Deferred Revenue Deferred income Increase (Decrease) in Accounts Payable, Related Parties Related party liabilities Net Cash Provided by (Used in) Operating Activities Net cash provided by operating activities Payments to Acquire Short-term Investments Short term investments Payments to Acquire Investments Payments to acquire investments Proceeds from Sale, Maturity and Collection of Investments [Abstract] Proceeds from sale of: Proceeds from Sale of Property, Plant, and Equipment Property, plant and equipment Proceeds from Sale of Short-term Investments Short term investments Proceeds from Sale of Available-for-sale Securities, Equity Equity securities Proceeds from Sale of Real Estate Real estate Proceeds from Sale of Mortgage Loans Held-for-sale Mortgage loans Net Cash Provided by (Used in) Investing Activities Net cash used by investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flow from financing activities: Proceeds from Lines of Credit Borrowings from credit facilities Repayments of Lines of Credit Principal repayments on credit facilities Debt issuance costs Payments of Debt Issuance Costs Repayments of Long-term Capital Lease Obligations Capital lease payments Proceeds from Repayment of Loans by Employee Stock Ownership Plans Leveraged Employee Stock Ownership Plan - repayments from loan Increase (Decrease) in Accounts Receivable from Securitization Securitization deposits Proceeds from Annuities and Investment Certificates Investment contract deposits Repayments of Annuities and Investment Certificates Investment contract withdrawals Net Cash Provided by (Used in) Financing Activities Net cash used by financing activities Effect of Exchange Rate on Cash and Cash Equivalents Effects of exchange rate on cash Cash and Cash Equivalents, Period Increase (Decrease) Increase (decrease) in cash and cash equivalents Cash and cash equivalents at the beginning of period Cash and cash equivalents at the end of the period Segment Reporting, General Information Earnings Per Share [Text Block] Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Debt Disclosure [Text Block] Derivative Instruments and Hedging Activities Disclosure [Text Block] Comprehensive Income (Loss) Note [Text Block] Related Party Transactions Disclosure [Text Block] Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] Fair Value Disclosures [Text Block] Document Type Amendment Flag Amendment Description Document Period End Date Entity [Text Block] Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Public Float Document Fiscal Year Focus Document Fiscal Period Focus Entity Common Stock, Shares Outstanding Depreciation net of gains losses on disposals Investment Type [Axis] Investment Type Categorization [Domain] Depreciation Assets Rental Trucks and Rental Trailers and Other Rental Equipment are defined to be under the same us-gaap concept, "Property subject to or available for operating lease, gross." Rental Trucks and Rental Trailers and Other Rental Equipment are defined to be under the same us-gaap concept, "Property subject to or available for operating lease, gross." On our HTML document, we leave this field name blank. It is considered the sum of all assets prior to our listing all Property, Plant and Equipment items. Revenues Weighted Average Number of Shares Outstanding, Basic Weighted average common shares outstanding: Basic and diluted Supplemental Income Statement Elements [Abstract] Related Party Costs and Expenses, Related Party Related party, costs and expenses, net of eliminations Related Party Transaction, Other Revenues from Transactions with Related Party Related party revenues, net of eliminations Common Class A [Member] Series A common stock of $0.25 par value, 10,000,000 shares authorized; none issued and outstanding as of December 31 and March 31, 2011 Operating Leases, Rent Expense Lease expense Common Domain Members [Abstract] Earnings Per Share [Abstract] Investments, Debt and Equity Securities [Abstract] Debt Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Income Tax Reconciliation, Tax Contingencies [Abstract] Compensation and Retirement Disclosure [Abstract] Fair Value Disclosures [Abstract] Commitments and Contingencies Disclosure [Abstract] Related Party Transactions [Abstract] Segments, Geographical Areas [Abstract] Segment Reporting [Abstract] Disclosure Text Block [Abstract] 2. Earnings Per Share 3. Investments 4. Borrowings 7. Comprehensive Income (Loss) 11. Related Party Transactions 12. Consolidating Financial Information by Industry Segment 13. Industry Segment and Geographic Area Data 15. Fair Value Measurements Other Prepaid Expense, Current Prepaid expenses Common Stock, Shares, Outstanding Preferred stock, shares authorized Preferred stock, shares issued Preferred stock, shares outstanding Preferred stock, no par value Common stock, shares authorized Common stock, shares, issued Common stock, shares, outstanding Treasury stock, shares Management Fees Revenue Property management fees Policyholder Benefits and Claims Incurred, Net Benefits and losses Operating Income (Loss) Earnings from operations Preferred stock, value, issued Common stock, value, issued Series preferred stock, with or without par value, 50,000,000 shares authorized: Other Comprehensive Income (Loss), before Tax [Abstract] Comprehensive income (loss) (pretax): Other Comprehensive Income (Loss), Tax [Abstract] Comprehensive income (loss) (tax effect): Comprehensive Income (Loss), Net of Tax, Attributable to Parent Total comprehensive income (loss) (net of tax) Basis of Presentation and Significant Accounting Policies [Text Block] 1. Basis of Presentation Commitments Disclosure [Text Block] 9. Contingent Liabilities and Commitments Legal Matters and Contingencies [Text Block] 10. Contingencies Postemployment Benefits Disclosure [Text Block] 14. Employee Benefit Plans 5. Derivatives Common Stock in Treasury [Member] Preferred Stock in Treasury [Member] Cost of common shares in treasury, net (22,377,912 shares as of December 31 and March 31, 2011) Cost of preferred shares in treasury, net (6,100,000 as of December 31, 2011 and 308,300 as of March 31, 2011) Treasury Stock [Text Block] Document Information [Table] Document Information, Document [Axis] Document [Domain] Document Information [Line Items] Net gain on sale of real and personal property Net gain on sale of investments 6. Stockholders Equity Inventory, LIFO Reserve, Period Charge Change in allowance for inventory reserves Deferred Income Tax Expense (Benefit) Deferred income taxes Increase (Decrease) in Reinsurance Recoverables and Receivables This is a company primary concept, which incorporates two us-gaap concepts: 1. IncreaseDecreaseInReinsuranceRecoverable with the definition "the increase (decrease) during the reporting period in the amount of benefits the ceding insurer expects to recover on insurance policies ceded to other insurance entities as of the balance sheet date for all guaranteed benefit types." 2. IncreaseDecreaseInReceivables with the definition: "The increase (decrease) during the reporting period in the total amount due within one year (or one operating cycle) from all parties, associated with underlying transactions that are classified as operating activities." Reinsurance recoverables and trade receivables Inventory Write-down Inventories Increase (Decrease) in Deferred Policy Acquisition Costs Capitalization of deferred policy acquisition costs Increase (Decrease) in Accounts Receivable, Related Parties Related party assets Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Cash flow from investing activities: Payments for (Proceeds from) Investments [Abstract] Purchase of: Payments to Acquire Property, Plant, and Equipment Property, plant and equipment Preferred stock investments Payments to Acquire Real Estate Held-for-investment Real estate Payments to Acquire Loans Held-for-investment Mortgage loans Increase (Decrease) in Other Accounts Payable and Accrued Liabilities Accounts payable and accrued expenses Preferred stock dividends paid Proceeds from Sale of Other Investments Proceeds from sale of acquired investments Listed separately the common and preferred stock shares and amounts in treasury. Listed separately the shares and values of common and preferred stock in treasury. Preferred stock dividends paid Payments for Repurchase of Redeemable Preferred Stock Preferred stock redemption paid Payments of Dividends, Preferred Stock and Preference Stock Preferred stock dividends paid Proceeds from (Repurchase of) Redeemable Preferred Stock Contribution to related party Depreciation, net of (gains) on disposals (($7,917) and ($8,921),respectively) Depreciation Net of Gains on Disposals for the Six Months Ending [Member] Depreciation Net of Gains on Disposals for the Quarter Ending [Member] Depreciation Net of Gains on Disposals for the Nine Months Ending [Member] Depreciation Net of Gains on Disposals for the Year Ending [Member] Component of Other Operating Cost and Expense, General [Axis] Component of Other Operating Cost and Expense, Name [Domain] Depreciation, net of (gains) on disposals of (($699) and ($1,655), respectively) Depreciation, net of (gains) on disposals of (($18,326) and ($18,964), respectively) Presented as a title on the 'Statement of Operations' and included in the 'Parenthetical Statement of Operations.' This descriptive title shows the same amount as is provided on the 'Cash Flow Statement' under 'Cash flow from operating activities' as 'Net gain on sale of real and personal property.' It is shown to identify that the amount includes depreciation of this personal property. Presented as a title on the 'Statement of Operations' and included in the 'Parenthetical Statement of Operations.' This descriptive title shows the same amount as is provided on the 'Cash Flow Statement' under 'Cash flow from operating activities' as 'Net gain on sale of real and personal property.' It is shown to identify that the amount includes depreciation of this personal property. Proceeds from Contributions from Affiliates Dividend from related party Presented as a title on the 'Statement of Operations' and included in the 'Parenthetical Statement of Operations.' This descriptive title shows the same amount as is provided on the 'Cash Flow Statement' under 'Cash flow from operating activities' as 'Net gain on sale of real and personal property.' It is shown to identify that the amount includes depreciation of this personal property. Depreciation, net of (gains) on disposals (($18,326) and ($18,964), respectively) Insurance Loss Reserves [Abstract] Management's Assertion of Adequacy of Insurance Reserves 8. Change in Excess Workers' Compensation Reserves Estimate