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Consolidated Balance Sheet by Industry Segment (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Mar. 31, 2013
Dec. 31, 2012
Mar. 31, 2012
ASSETS:        
Cash and cash equivalents $ 601,615 $ 463,744 $ 586,124 $ 357,180
Reinsurance recoverables and trade receivables, net 228,424 261,789    
Inventories, net 65,258 56,396    
Prepaid expenses 44,344 57,451    
Investments, fixed maturities and marketable equities 1,122,121 1,095,338    
Investments, other 239,348 241,765    
Deferred policy acquisition costs, net 114,467 93,043    
Other assets 95,395 99,986    
Related party assets 170,038 182,035    
Subtotal assets 2,681,010 2,551,547    
Investments in subsidiaries 0 0    
Property, plant and equipment, at cost:        
Land 392,725 333,228    
Buildings and improvements 1,382,182 1,197,875    
Furniture and equipment 320,587 311,142    
Property, plant and equipment (gross) 4,878,363 4,314,409    
Less: Accumulated depreciation (1,685,264) (1,559,355)    
Total property, plant and equipment 3,193,099 2,755,054    
Total assets 5,874,109 5,306,601 5,219,305  
Liabilities:        
Accounts payable and accrued expenses 351,796 358,491    
Notes, loans and leases payable 1,862,869 1,661,845    
Policy benefits and losses, claims and loss expenses payable 1,095,610 1,115,048    
Liabilities from investment contracts 596,268 510,789    
Other policyholders' funds and liabilities 7,271 7,294    
Deferred income 29,489 30,217    
Deferred income taxes 436,384 393,658    
Related party liabilities 0 0    
Total liabilities 4,379,687 4,077,342    
Stockholders' equity:        
Additional paid-in capital 442,841 438,168    
Accumulated other comprehensive income (loss) (46,192) (22,680)    
Retained earnings (deficit) 1,766,242 1,482,630    
Unearned employee stock ownership plan shares (1,316) (1,706)    
Total stockholders' equity (deficit) 1,494,422 1,229,259    
Total liabilities and stockholders' equity 5,874,109 5,306,601    
Rental trailers and other rental equipment
       
Property, plant and equipment, at cost:        
Property subject to or available for operating lease, gross 356,416 317,476    
Rental trucks
       
Property, plant and equipment, at cost:        
Property subject to or available for operating lease, gross 2,426,453 2,154,688    
Series A preferred stock
       
Stockholders' equity:        
Preferred stock, value, issued          
Series B preferred stock
       
Stockholders' equity:        
Preferred stock, value, issued          
Series A common stock
       
Stockholders' equity:        
Common stock, value, issued          
Common stock
       
Stockholders' equity:        
Common stock, value, issued 10,497 10,497    
Cost of common shares in treasury, net
       
Stockholders' equity:        
Treasury stock, value (525,653) (525,653)    
Cost of preferred shares in treasury, net
       
Stockholders' equity:        
Treasury stock, value (151,997) (151,997)    
Operating Segments | Property and Casualty Insurance
       
ASSETS:        
Cash and cash equivalents 5,601 [1] 14,120 [2] 14,490 [3] 22,542 [3]
Reinsurance recoverables and trade receivables, net 162,714 [1] 186,010 [2]    
Inventories, net 0 [1] 0 [2]    
Prepaid expenses 0 [1] 0 [2]    
Investments, fixed maturities and marketable equities 188,155 [1] 160,455 [2]    
Investments, other 49,006 [1] 65,212 [2]    
Deferred policy acquisition costs, net 0 [1] 0 [2]    
Other assets 1,008 [1] 1,212 [2]    
Related party assets 13,594 [1] 8,846 [2]    
Subtotal assets 420,078 [1] 435,855 [2]    
Investments in subsidiaries 0 [1] 0 [2]    
Property, plant and equipment, at cost:        
Land 0 [1] 0 [2]    
Buildings and improvements 0 [1] 0 [2]    
Furniture and equipment 0 [1] 0 [2]    
Property, plant and equipment (gross) 0 [1] 0 [2]    
Less: Accumulated depreciation 0 [1] 0 [2]    
Total property, plant and equipment 0 [1] 0 [2]    
Total assets 420,078 [1] 435,855 [2]    
Liabilities:        
Accounts payable and accrued expenses 0 [1] 0 [2]    
Notes, loans and leases payable 0 [1] 0 [2]    
Policy benefits and losses, claims and loss expenses payable 300,351 [1] 330,184 [2]    
Liabilities from investment contracts 0 [1] 0 [2]    
Other policyholders' funds and liabilities 3,118 [1] 3,157 [2]    
Deferred income 0 [1] 0 [2]    
Deferred income taxes (32,753) [1] (36,241) [2]    
Related party liabilities 4,740 [1] 1,844 [2]    
Total liabilities 275,456 [1] 298,944 [2]    
Stockholders' equity:        
Additional paid-in capital 91,120 [1] 91,120 [2]    
Accumulated other comprehensive income (loss) 1,542 [1] 4,568 [2]    
Retained earnings (deficit) 48,659 [1] 37,922 [2]    
Unearned employee stock ownership plan shares 0 [1] 0 [2]    
Total stockholders' equity (deficit) 144,622 [1] 136,911 [2]    
Total liabilities and stockholders' equity 420,078 [1] 435,855 [2]    
Operating Segments | Property and Casualty Insurance | Rental trailers and other rental equipment
       
Property, plant and equipment, at cost:        
Property subject to or available for operating lease, gross 0 [1] 0 [2]    
Operating Segments | Property and Casualty Insurance | Rental trucks
       
Property, plant and equipment, at cost:        
Property subject to or available for operating lease, gross 0 [1] 0 [2]    
Operating Segments | Property and Casualty Insurance | Series A preferred stock
       
Stockholders' equity:        
Preferred stock, value, issued    [1]    [2]    
Operating Segments | Property and Casualty Insurance | Series B preferred stock
       
Stockholders' equity:        
Preferred stock, value, issued    [1]    [2]    
Operating Segments | Property and Casualty Insurance | Series A common stock
       
Stockholders' equity:        
Common stock, value, issued    [1]    [2]    
Operating Segments | Property and Casualty Insurance | Common stock
       
Stockholders' equity:        
Common stock, value, issued 3,301 [1] 3,301 [2]    
Operating Segments | Property and Casualty Insurance | Cost of common shares in treasury, net
       
Stockholders' equity:        
Treasury stock, value 0 [1] 0 [2]    
Operating Segments | Property and Casualty Insurance | Cost of preferred shares in treasury, net
       
Stockholders' equity:        
Treasury stock, value 0 [1] 0 [2]    
Operating Segments | Life Insurance
       
ASSETS:        
Cash and cash equivalents 24,594 [1] 22,064 [2] 32,751 [3] 25,410 [3]
Reinsurance recoverables and trade receivables, net 35,686 [1] 32,520 [2]    
Inventories, net 0 [1] 0 [2]    
Prepaid expenses 0 [1] 0 [2]    
Investments, fixed maturities and marketable equities 933,966 [1] 913,655 [2]    
Investments, other 157,991 [1] 125,900 [2]    
Deferred policy acquisition costs, net 114,467 [1] 93,043 [2]    
Other assets 277 [1] 157 [2]    
Related party assets 492 [1] 514 [2]    
Subtotal assets 1,267,473 [1] 1,187,853 [2]    
Investments in subsidiaries 0 [1] 0 [2]    
Property, plant and equipment, at cost:        
Land 0 [1] 0 [2]    
Buildings and improvements 0 [1] 0 [2]    
Furniture and equipment 0 [1] 0 [2]    
Property, plant and equipment (gross) 0 [1] 0 [2]    
Less: Accumulated depreciation 0 [1] 0 [2]    
Total property, plant and equipment 0 [1] 0 [2]    
Total assets 1,267,473 [1] 1,187,853 [2]    
Liabilities:        
Accounts payable and accrued expenses 12,732 [1] 8,139 [2]    
Notes, loans and leases payable 0 [1] 0 [2]    
Policy benefits and losses, claims and loss expenses payable 414,319 [1] 404,040 [2]    
Liabilities from investment contracts 596,268 [1] 510,789 [2]    
Other policyholders' funds and liabilities 4,153 [1] 4,137 [2]    
Deferred income 0 [1] 0 [2]    
Deferred income taxes 11,303 [1] 17,810 [2]    
Related party liabilities 542 [1] 208 [2]    
Total liabilities 1,039,317 [1] 945,123 [2]    
Stockholders' equity:        
Additional paid-in capital 26,271 [1] 26,271 [2]    
Accumulated other comprehensive income (loss) 9,866 [1] 37,567 [2]    
Retained earnings (deficit) 189,519 [1] 176,392 [2]    
Unearned employee stock ownership plan shares 0 [1] 0 [2]    
Total stockholders' equity (deficit) 228,156 [1] 242,730 [2]    
Total liabilities and stockholders' equity 1,267,473 [1] 1,187,853 [2]    
Operating Segments | Life Insurance | Rental trailers and other rental equipment
       
Property, plant and equipment, at cost:        
Property subject to or available for operating lease, gross 0 [1] 0 [2]    
Operating Segments | Life Insurance | Rental trucks
       
Property, plant and equipment, at cost:        
Property subject to or available for operating lease, gross 0 [1] 0 [2]    
Operating Segments | Life Insurance | Series A preferred stock
       
Stockholders' equity:        
Preferred stock, value, issued    [1]    [2]    
Operating Segments | Life Insurance | Series B preferred stock
       
Stockholders' equity:        
Preferred stock, value, issued    [1]    [2]    
Operating Segments | Life Insurance | Series A common stock
       
Stockholders' equity:        
Common stock, value, issued    [1]    [2]    
Operating Segments | Life Insurance | Common stock
       
Stockholders' equity:        
Common stock, value, issued 2,500 [1] 2,500 [2]    
Operating Segments | Life Insurance | Cost of common shares in treasury, net
       
Stockholders' equity:        
Treasury stock, value 0 [1] 0 [2]    
Operating Segments | Life Insurance | Cost of preferred shares in treasury, net
       
Stockholders' equity:        
Treasury stock, value 0 [1] 0 [2]    
Operating Segments | Moving and Storage Operating Segment
       
ASSETS:        
Cash and cash equivalents 571,420 427,560 538,883 309,228
Reinsurance recoverables and trade receivables, net 30,024 43,259    
Inventories, net 65,258 56,396    
Prepaid expenses 44,344 57,451    
Investments, fixed maturities and marketable equities 0 21,228    
Investments, other 32,351 50,653    
Deferred policy acquisition costs, net 0 0    
Other assets 94,110 98,617    
Related party assets 173,974 184,740    
Subtotal assets 1,011,481 939,904    
Investments in subsidiaries 372,778 379,641    
Property, plant and equipment, at cost:        
Land 392,725 333,228    
Buildings and improvements 1,382,182 1,197,875    
Furniture and equipment 320,587 311,142    
Property, plant and equipment (gross) 4,878,363 4,314,409    
Less: Accumulated depreciation (1,685,264) (1,559,355)    
Total property, plant and equipment 3,193,099 2,755,054    
Total assets 4,577,358 4,074,599    
Liabilities:        
Accounts payable and accrued expenses 339,064 350,352    
Notes, loans and leases payable 1,862,869 1,661,845    
Policy benefits and losses, claims and loss expenses payable 380,940 380,824    
Liabilities from investment contracts 0 0    
Other policyholders' funds and liabilities 0 0    
Deferred income 29,489 30,217    
Deferred income taxes 457,834 412,089    
Related party liabilities 12,740 10,013    
Total liabilities 3,082,936 2,845,340    
Stockholders' equity:        
Additional paid-in capital 443,051 438,378    
Accumulated other comprehensive income (loss) (46,192) (22,680)    
Retained earnings (deficit) 1,766,032 1,482,420    
Unearned employee stock ownership plan shares (1,316) (1,706)    
Total stockholders' equity (deficit) 1,494,422 1,229,259    
Total liabilities and stockholders' equity 4,577,358 4,074,599    
Operating Segments | Moving and Storage Operating Segment | Rental trailers and other rental equipment
       
Property, plant and equipment, at cost:        
Property subject to or available for operating lease, gross 356,416 317,476    
Operating Segments | Moving and Storage Operating Segment | Rental trucks
       
Property, plant and equipment, at cost:        
Property subject to or available for operating lease, gross 2,426,453 2,154,688    
Operating Segments | Moving and Storage Operating Segment | Series A preferred stock
       
Stockholders' equity:        
Preferred stock, value, issued          
Operating Segments | Moving and Storage Operating Segment | Series B preferred stock
       
Stockholders' equity:        
Preferred stock, value, issued          
Operating Segments | Moving and Storage Operating Segment | Series A common stock
       
Stockholders' equity:        
Common stock, value, issued          
Operating Segments | Moving and Storage Operating Segment | Common stock
       
Stockholders' equity:        
Common stock, value, issued 10,497 10,497    
Operating Segments | Moving and Storage Operating Segment | Cost of common shares in treasury, net
       
Stockholders' equity:        
Treasury stock, value (525,653) (525,653)    
Operating Segments | Moving and Storage Operating Segment | Cost of preferred shares in treasury, net
       
Stockholders' equity:        
Treasury stock, value (151,997) (151,997)    
Operating Segments | Moving and Storage Operating Segment | Moving and Storage Operating Eliminations
       
ASSETS:        
Cash and cash equivalents 0 0 0 0
Reinsurance recoverables and trade receivables, net 0 0    
Inventories, net 0 0    
Prepaid expenses 0 0    
Investments, fixed maturities and marketable equities 0 0    
Investments, other 0 0    
Deferred policy acquisition costs, net 0 0    
Other assets 0 0    
Related party assets (964,556) [4] (975,683) [4]    
Subtotal assets (964,556) (975,683)    
Investments in subsidiaries (104,285) [5] 140,100 [5]    
Property, plant and equipment, at cost:        
Land 0 0    
Buildings and improvements 0 0    
Furniture and equipment 0 0    
Property, plant and equipment (gross) 0 0    
Less: Accumulated depreciation 0 0    
Total property, plant and equipment 0 0    
Total assets (1,068,841) (835,583)    
Liabilities:        
Accounts payable and accrued expenses 0 0    
Notes, loans and leases payable 0 0    
Policy benefits and losses, claims and loss expenses payable 0 0    
Liabilities from investment contracts 0 0    
Other policyholders' funds and liabilities 0 0    
Deferred income 0 0    
Deferred income taxes 0 0    
Related party liabilities (964,556) [4] (975,683) [4]    
Total liabilities (964,556) (975,683)    
Stockholders' equity:        
Additional paid-in capital (269,171) [5] (269,171) [5]    
Accumulated other comprehensive income (loss) 57,600 [5] 62,325 [5]    
Retained earnings (deficit) 107,288 [5] 346,948 [5]    
Unearned employee stock ownership plan shares 0 0    
Total stockholders' equity (deficit) (104,285) 140,100    
Total liabilities and stockholders' equity (1,068,841) (835,583)    
Operating Segments | Moving and Storage Operating Segment | Moving and Storage Operating Eliminations | Rental trailers and other rental equipment
       
Property, plant and equipment, at cost:        
Property subject to or available for operating lease, gross 0 0    
Operating Segments | Moving and Storage Operating Segment | Moving and Storage Operating Eliminations | Rental trucks
       
Property, plant and equipment, at cost:        
Property subject to or available for operating lease, gross 0 0    
Operating Segments | Moving and Storage Operating Segment | Moving and Storage Operating Eliminations | Series A preferred stock
       
Stockholders' equity:        
Preferred stock, value, issued          
Operating Segments | Moving and Storage Operating Segment | Moving and Storage Operating Eliminations | Series B preferred stock
       
Stockholders' equity:        
Preferred stock, value, issued          
Operating Segments | Moving and Storage Operating Segment | Moving and Storage Operating Eliminations | Series A common stock
       
Stockholders' equity:        
Common stock, value, issued          
Operating Segments | Moving and Storage Operating Segment | Moving and Storage Operating Eliminations | Common stock
       
Stockholders' equity:        
Common stock, value, issued (2) [5] (2) [5]    
Operating Segments | Moving and Storage Operating Segment | Moving and Storage Operating Eliminations | Cost of common shares in treasury, net
       
Stockholders' equity:        
Treasury stock, value 0 0    
Operating Segments | Moving and Storage Operating Segment | Moving and Storage Operating Eliminations | Cost of preferred shares in treasury, net
       
Stockholders' equity:        
Treasury stock, value 0 0    
Operating Segments | Moving and Storage Operating Segment | AMERCO
       
ASSETS:        
Cash and cash equivalents 476,551 327,119 351,755 201,502
Reinsurance recoverables and trade receivables, net 0 0    
Inventories, net 0 0    
Prepaid expenses 0 22,475    
Investments, fixed maturities and marketable equities 0 21,228    
Investments, other 0 0    
Deferred policy acquisition costs, net 0 0    
Other assets 113 118    
Related party assets 1,021,397 1,032,663    
Subtotal assets 1,498,061 1,403,603    
Investments in subsidiaries 477,063 239,541    
Property, plant and equipment, at cost:        
Land 0 0    
Buildings and improvements 0 0    
Furniture and equipment 70 136    
Property, plant and equipment (gross) 70 136    
Less: Accumulated depreciation (55) (116)    
Total property, plant and equipment 15 20    
Total assets 1,975,139 1,643,164    
Liabilities:        
Accounts payable and accrued expenses 21,567 110    
Notes, loans and leases payable 0 0    
Policy benefits and losses, claims and loss expenses payable 0 0    
Liabilities from investment contracts 0 0    
Other policyholders' funds and liabilities 0 0    
Deferred income 0 0    
Deferred income taxes 457,834 412,089    
Related party liabilities 0 0    
Total liabilities 479,401 412,199    
Stockholders' equity:        
Additional paid-in capital 443,051 438,378    
Accumulated other comprehensive income (loss) (46,192) (22,680)    
Retained earnings (deficit) 1,766,032 1,482,420    
Unearned employee stock ownership plan shares 0 0    
Total stockholders' equity (deficit) 1,495,738 1,230,965    
Total liabilities and stockholders' equity 1,975,139 1,643,164    
Operating Segments | Moving and Storage Operating Segment | AMERCO | Rental trailers and other rental equipment
       
Property, plant and equipment, at cost:        
Property subject to or available for operating lease, gross 0 0    
Operating Segments | Moving and Storage Operating Segment | AMERCO | Rental trucks
       
Property, plant and equipment, at cost:        
Property subject to or available for operating lease, gross 0 0    
Operating Segments | Moving and Storage Operating Segment | AMERCO | Series A preferred stock
       
Stockholders' equity:        
Preferred stock, value, issued          
Operating Segments | Moving and Storage Operating Segment | AMERCO | Series B preferred stock
       
Stockholders' equity:        
Preferred stock, value, issued          
Operating Segments | Moving and Storage Operating Segment | AMERCO | Series A common stock
       
Stockholders' equity:        
Common stock, value, issued          
Operating Segments | Moving and Storage Operating Segment | AMERCO | Common stock
       
Stockholders' equity:        
Common stock, value, issued 10,497 10,497    
Operating Segments | Moving and Storage Operating Segment | AMERCO | Cost of common shares in treasury, net
       
Stockholders' equity:        
Treasury stock, value (525,653) (525,653)    
Operating Segments | Moving and Storage Operating Segment | AMERCO | Cost of preferred shares in treasury, net
       
Stockholders' equity:        
Treasury stock, value (151,997) (151,997)    
Operating Segments | Moving and Storage Operating Segment | U-Haul
       
ASSETS:        
Cash and cash equivalents 92,695 98,926 185,624 106,951
Reinsurance recoverables and trade receivables, net 29,847 43,259    
Inventories, net 65,258 56,396    
Prepaid expenses 43,618 34,956    
Investments, fixed maturities and marketable equities 0 0    
Investments, other 0 100    
Deferred policy acquisition costs, net 0 0    
Other assets 59,742 69,671    
Related party assets 117,121 127,751    
Subtotal assets 408,281 431,059    
Investments in subsidiaries 0 0    
Property, plant and equipment, at cost:        
Land 55,599 81,421    
Buildings and improvements 200,961 184,053    
Furniture and equipment 308,713 292,621    
Property, plant and equipment (gross) 3,348,142 3,030,259    
Less: Accumulated depreciation (1,305,591) (1,185,796)    
Total property, plant and equipment 2,042,551 1,844,463    
Total assets 2,450,832 2,275,522    
Liabilities:        
Accounts payable and accrued expenses 312,826 345,864    
Notes, loans and leases payable 965,308 881,766    
Policy benefits and losses, claims and loss expenses payable 380,940 380,824    
Liabilities from investment contracts 0 0    
Other policyholders' funds and liabilities 0 0    
Deferred income 29,489 30,217    
Deferred income taxes 0 0    
Related party liabilities 522,754 638,448    
Total liabilities 2,211,317 2,277,119    
Stockholders' equity:        
Additional paid-in capital 121,230 121,230    
Accumulated other comprehensive income (loss) (57,600) (62,325)    
Retained earnings (deficit) 177,200 (58,797)    
Unearned employee stock ownership plan shares (1,316) (1,706)    
Total stockholders' equity (deficit) 239,515 (1,597)    
Total liabilities and stockholders' equity 2,450,832 2,275,522    
Operating Segments | Moving and Storage Operating Segment | U-Haul | Rental trailers and other rental equipment
       
Property, plant and equipment, at cost:        
Property subject to or available for operating lease, gross 356,416 317,476    
Operating Segments | Moving and Storage Operating Segment | U-Haul | Rental trucks
       
Property, plant and equipment, at cost:        
Property subject to or available for operating lease, gross 2,426,453 2,154,688    
Operating Segments | Moving and Storage Operating Segment | U-Haul | Series A preferred stock
       
Stockholders' equity:        
Preferred stock, value, issued          
Operating Segments | Moving and Storage Operating Segment | U-Haul | Series B preferred stock
       
Stockholders' equity:        
Preferred stock, value, issued          
Operating Segments | Moving and Storage Operating Segment | U-Haul | Series A common stock
       
Stockholders' equity:        
Common stock, value, issued          
Operating Segments | Moving and Storage Operating Segment | U-Haul | Common stock
       
Stockholders' equity:        
Common stock, value, issued 1 1    
Operating Segments | Moving and Storage Operating Segment | U-Haul | Cost of common shares in treasury, net
       
Stockholders' equity:        
Treasury stock, value 0 0    
Operating Segments | Moving and Storage Operating Segment | U-Haul | Cost of preferred shares in treasury, net
       
Stockholders' equity:        
Treasury stock, value 0 0    
Operating Segments | Moving and Storage Operating Segment | Real Estate
       
ASSETS:        
Cash and cash equivalents 2,174 1,515 1,504 775
Reinsurance recoverables and trade receivables, net 177 0    
Inventories, net 0 0    
Prepaid expenses 726 20    
Investments, fixed maturities and marketable equities 0 0    
Investments, other 32,351 50,553    
Deferred policy acquisition costs, net 0 0    
Other assets 34,255 28,828    
Related party assets 12 9    
Subtotal assets 69,695 80,925    
Investments in subsidiaries 0 0    
Property, plant and equipment, at cost:        
Land 337,126 251,807    
Buildings and improvements 1,181,221 1,013,822    
Furniture and equipment 11,804 18,385    
Property, plant and equipment (gross) 1,530,151 1,284,014    
Less: Accumulated depreciation (379,618) (373,443)    
Total property, plant and equipment 1,150,533 910,571    
Total assets 1,220,228 991,496    
Liabilities:        
Accounts payable and accrued expenses 4,671 4,378    
Notes, loans and leases payable 897,561 780,079    
Policy benefits and losses, claims and loss expenses payable 0 0    
Liabilities from investment contracts 0 0    
Other policyholders' funds and liabilities 0 0    
Deferred income 0 0    
Deferred income taxes 0 0    
Related party liabilities 454,542 347,248    
Total liabilities 1,356,774 1,131,705    
Stockholders' equity:        
Additional paid-in capital 147,941 147,941    
Accumulated other comprehensive income (loss) 0 0    
Retained earnings (deficit) (284,488) (288,151)    
Unearned employee stock ownership plan shares 0 0    
Total stockholders' equity (deficit) (136,546) (140,209)    
Total liabilities and stockholders' equity 1,220,228 991,496    
Operating Segments | Moving and Storage Operating Segment | Real Estate | Rental trailers and other rental equipment
       
Property, plant and equipment, at cost:        
Property subject to or available for operating lease, gross 0 0    
Operating Segments | Moving and Storage Operating Segment | Real Estate | Rental trucks
       
Property, plant and equipment, at cost:        
Property subject to or available for operating lease, gross 0 0    
Operating Segments | Moving and Storage Operating Segment | Real Estate | Series A preferred stock
       
Stockholders' equity:        
Preferred stock, value, issued          
Operating Segments | Moving and Storage Operating Segment | Real Estate | Series B preferred stock
       
Stockholders' equity:        
Preferred stock, value, issued          
Operating Segments | Moving and Storage Operating Segment | Real Estate | Series A common stock
       
Stockholders' equity:        
Common stock, value, issued          
Operating Segments | Moving and Storage Operating Segment | Real Estate | Common stock
       
Stockholders' equity:        
Common stock, value, issued 1 1    
Operating Segments | Moving and Storage Operating Segment | Real Estate | Cost of common shares in treasury, net
       
Stockholders' equity:        
Treasury stock, value 0 0    
Operating Segments | Moving and Storage Operating Segment | Real Estate | Cost of preferred shares in treasury, net
       
Stockholders' equity:        
Treasury stock, value 0 0    
Eliminations
       
ASSETS:        
Cash and cash equivalents 0 0 0 0
Reinsurance recoverables and trade receivables, net 0 0    
Inventories, net 0 0    
Prepaid expenses 0 0    
Investments, fixed maturities and marketable equities 0 0    
Investments, other 0 0    
Deferred policy acquisition costs, net 0 0    
Other assets 0 0    
Related party assets (18,022) [4] (12,065) [4]    
Subtotal assets (18,022) (12,065)    
Investments in subsidiaries (372,778) [5] (379,641) [5]    
Property, plant and equipment, at cost:        
Land 0 0    
Buildings and improvements 0 0    
Furniture and equipment 0 0    
Property, plant and equipment (gross) 0 0    
Less: Accumulated depreciation 0 0    
Total property, plant and equipment 0 0    
Total assets (390,800) (391,706)    
Liabilities:        
Accounts payable and accrued expenses 0 0    
Notes, loans and leases payable 0 0    
Policy benefits and losses, claims and loss expenses payable 0 0    
Liabilities from investment contracts 0 0    
Other policyholders' funds and liabilities 0 0    
Deferred income 0 0    
Deferred income taxes 0 0    
Related party liabilities (18,022) [4] (12,065) [4]    
Total liabilities (18,022) (12,065)    
Stockholders' equity:        
Additional paid-in capital (117,601) [5] (117,601) [5]    
Accumulated other comprehensive income (loss) (11,408) [5] (42,135) [5]    
Retained earnings (deficit) (237,968) [5] (214,104) [5]    
Unearned employee stock ownership plan shares 0 0    
Total stockholders' equity (deficit) (372,778) (379,641)    
Total liabilities and stockholders' equity (390,800) (391,706)    
Eliminations | Rental trailers and other rental equipment
       
Property, plant and equipment, at cost:        
Property subject to or available for operating lease, gross 0 0    
Eliminations | Rental trucks
       
Property, plant and equipment, at cost:        
Property subject to or available for operating lease, gross 0 0    
Eliminations | Series A preferred stock
       
Stockholders' equity:        
Preferred stock, value, issued          
Eliminations | Series B preferred stock
       
Stockholders' equity:        
Preferred stock, value, issued          
Eliminations | Series A common stock
       
Stockholders' equity:        
Common stock, value, issued          
Eliminations | Common stock
       
Stockholders' equity:        
Common stock, value, issued (5,801) [5] (5,801) [5]    
Eliminations | Cost of common shares in treasury, net
       
Stockholders' equity:        
Treasury stock, value 0 0    
Eliminations | Cost of preferred shares in treasury, net
       
Stockholders' equity:        
Treasury stock, value $ 0 $ 0    
[1] Balances as of September 30, 2013
[2] Balances as of December 31, 2012
[3] Balance for the nine months ended September 30, 2012
[4] Eliminate intercompany receivables and payables
[5] Eliminate investment in subsidiaries