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Bank subsidiary (Details 18) (USD $) | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | ---
Maximum |  |
Guarantees |  |
Current standard deposit insurance amount | $ 250,000 |
Prior standard deposit insurance amount | 100,000 |
Temporarily raised standard deposit insurance amount in prior period | 250,000 |
American Savings Bank FSB and Subsidiaries [Member] |  |
Guarantees |  |
Spread added to current assessment rate (as a percent) | 3.00% |
Prepaid assessment | 24,000,000 | 5,700,000
Assessment rate ( as a percent) |  | 14.00%
FDIC insurance assessment | 3,600,000 |
American Savings Bank FSB and Subsidiaries [Member] | Minimum |  |
Guarantees |  |
Assessment rate for financial institutions in the lowest risk category (as a percent) | 2.50% |
Assessment rate for financial institutions in the highest risk category (as a percent) | 30.00% |
American Savings Bank FSB and Subsidiaries [Member] | Maximum |  |
Guarantees |  |
Assessment rate for financial institutions in the lowest risk category (as a percent) | 9.00% |
Assessment rate for financial institutions in the highest risk category (as a percent) | 45.00% |
Indemnification Agreement | American Savings Bank FSB and Subsidiaries [Member] |  |
Guarantees |  |
Accrued indemnification litigation obligation | $ 1,100,000 |

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- Definition Represents the deposit insurance coverage required in the current period which is stipulated by the related laws. + References No definition available. + Details
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- Definition Represents the rate used to determine the prepaid risk-based assessments. + References No definition available. + Details
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- Definition Represents the percentage points added to the current assessment rate to arrive at the prepaid assessment rate. + References No definition available. + Details
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- Definition Represents the rate used to determine the prepaid risk-based assessments for financial institutions in the highest risk category. + References No definition available. + Details
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- Definition Represents the rate used to determine the prepaid risk-based assessments for financial institutions in the lowest risk category. + References No definition available. + Details
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- Definition Represents the amount of prepaid risk-based assessment of the entity. + References No definition available. + Details
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- Definition Represents the deposit insurance coverage required in the previous periods which is stipulated by the related laws. + References No definition available. + Details
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- Definition The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation. + References No definition available. + Details
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- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9, 10, 11, 12 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14435-108349 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14557-108349 + Details
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