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Bank segment (Details 15) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended								3 Months Ended		9 Months Ended						3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Not designated as a hedging instrument	Dec. 31, 2013 Not designated as a hedging instrument	Sep. 30, 2014 Forward sale contracts	Dec. 31, 2013 Forward sale contracts	Sep. 30, 2014 Forward sale contracts Not designated as a hedging instrument	Dec. 31, 2013 Forward sale contracts Not designated as a hedging instrument	Sep. 30, 2014 Forward sale contracts Not designated as a hedging instrument Mortgage banking income	Sep. 30, 2013 Forward sale contracts Not designated as a hedging instrument Mortgage banking income	Sep. 30, 2014 Forward sale contracts Not designated as a hedging instrument Mortgage banking income	Sep. 30, 2013 Forward sale contracts Not designated as a hedging instrument Mortgage banking income	Sep. 30, 2014 Interest rate lock commitments	Dec. 31, 2013 Interest rate lock commitments	Sep. 30, 2014 Interest rate lock commitments Not designated as a hedging instrument	Dec. 31, 2013 Interest rate lock commitments Not designated as a hedging instrument	Sep. 30, 2014 Interest rate lock commitments Not designated as a hedging instrument Mortgage banking income	Sep. 30, 2013 Interest rate lock commitments Not designated as a hedging instrument Mortgage banking income	Sep. 30, 2014 Interest rate lock commitments Not designated as a hedging instrument Mortgage banking income	Sep. 30, 2013 Interest rate lock commitments Not designated as a hedging instrument Mortgage banking income
Derivative instrument
Notional amount							$ 12,707	$ 26,018							$ 14,511	$ 25,070
Fair value							(25)	139							215	464
Asset derivative					217	629			1	141							216	488
Liability derivative					27	26			26	2							1	24
Net gains (losses) recognized in the Statement of Income	$ 190	$ (355)	$ (413)	$ 283							$ (25)	$ (1,173)	$ (164)	$ (273)					$ 215	$ 818	$ (249)	$ 556

X

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

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Fair value of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, elected not to be offset against an obligation to return collateral under a master netting arrangement.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 20

-Section 50

-Paragraph 3

-Subparagraph (d)

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Fair value of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, elected not to be offset against a right to receive collateral under a master netting arrangement.

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Fair value of the assets less the liabilities of a derivative or group of derivatives.

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-Name Accounting Standards Codification

-Topic 825

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Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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