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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
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-Section 13
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Fair value, after offset of derivative asset, 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 and before offset against a right to receive collateral under a master netting arrangement. Includes liabilities elected not to be offset. Excludes liabilities not subject to 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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Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Bank segment - Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Derivative instrument
Net gains (losses) recognized in the Statement of Income	$ 108	$ 286
Not designated as a hedging instrument
Derivative instrument
Asset derivative	655		$ 385
Liability derivative	192		30
Interest rate lock commitments
Derivative instrument
Notional amount	32,135		22,241
Fair value	655		384
Interest rate lock commitments \| Not designated as a hedging instrument
Derivative instrument
Asset derivative	655		384
Liability derivative	0		0
Interest rate lock commitments \| Not designated as a hedging instrument \| Mortgage banking income
Derivative instrument
Net gains (losses) recognized in the Statement of Income	271	445
Forward sale contracts
Derivative instrument
Notional amount	30,516		23,644
Fair value	(192)		(29)
Forward sale contracts \| Not designated as a hedging instrument
Derivative instrument
Asset derivative	0		1
Liability derivative	192		$ 30
Forward sale contracts \| Not designated as a hedging instrument \| Mortgage banking income
Derivative instrument
Net gains (losses) recognized in the Statement of Income	$ (163)	$ (159)