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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
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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, 2017	Mar. 31, 2016	Dec. 31, 2016
Derivative instrument
Net gains (losses) recognized in the Statement of Income	$ (31)	$ 108
Not designated as a hedging instrument
Derivative instrument
Asset derivative	317		$ 453
Liability derivative	104		209
Interest rate lock commitments
Derivative instrument
Notional amount	21,771		25,883
Fair value	317		421
Interest rate lock commitments \| Not designated as a hedging instrument
Derivative instrument
Asset derivative	317		445
Liability derivative	0		24
Interest rate lock commitments \| Not designated as a hedging instrument \| Mortgage banking income
Derivative instrument
Net gains (losses) recognized in the Statement of Income	(104)	271
Forward commitments
Derivative instrument
Notional amount	22,120		30,813
Fair value	(104)		(177)
Forward commitments \| Not designated as a hedging instrument
Derivative instrument
Asset derivative	0		8
Liability derivative	104		$ 185
Forward commitments \| Not designated as a hedging instrument \| Mortgage banking income
Derivative instrument
Net gains (losses) recognized in the Statement of Income	$ 73	$ (163)