Bank segment (Details 14) (American Savings Bank (ASB), Mortgage Servicing Rights (MSR), USD $) In Thousands, unless otherwise specified	6 Months Ended
Jun. 30, 2014	Jun. 30, 2013
American Savings Bank (ASB) \| Mortgage Servicing Rights (MSR)
Servicing Asset at Amortized Cost [Line Items]
Gross carrying amount	$ 26,357	$ 24,508
Accumulated amortization	(14,578)	(12,866)
Valuation allowance	(174)	(279)
Net carrying amount	11,605	11,363
Valuation Allowance [Roll Forward]
Valuation allowance, beginning balance	251	498
Provision (recovery)	(37)	(98)
Other-than-temporary impairment	(40)	(121)
Valuation allowance, ending balance	174	279
Unpaid principal balance	$ 1,392,590	$ 1,300,370
Weighted average note-rate	4.08%	4.08%
Weighted average discount rate	9.60%	10.10%
Weighted average prepayment speed	8.30%	9.70%

Fair Value Inputs, Stated Interest Rate

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- Definition

Fair Value Inputs, Unpaid Principal Balance, Asset

+ References

No definition available.

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- Definition

Servicing Asset, Accumulated Amortization

+ References

No definition available.

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- Definition

Servicing Asset, Net

+ References

No definition available.

+ Details

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- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

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- Definition

Rate at which loans or a loan portfolio are expected to prepay principal balances, used as an input to measure fair value.

+ References

+ Details

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- Definition

Aggregate amount of servicing assets that are subsequently measured at fair value and servicing assets that are subsequently measured using the amortization method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 50

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745

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- Definition

Amount of other-than-temporary impairment (OTTI) applied to contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 50

-Section 50

-Paragraph 4

-Subparagraph (a)(6)

-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122739-111746

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- Definition

Reflects the estimated amount of impairment as of the balance sheet date of recognized servicing assets that are being amortized in proportion to and over the period of estimated net servicing income or loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 50

-Section 50

-Paragraph 4

-Subparagraph (e)(1)

-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122739-111746

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- Definition

New provisions recoveries or charged against this account which increase or reduce the net value of servicing assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 50

-Section 50

-Paragraph 4

-Subparagraph (e)(2)

-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122739-111746

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