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)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986

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Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement.

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- Definition

The premium (cost) of a hedge, net of any cash received on settlement during the period.

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- Definition

Fixed interest rate related to the interest rate derivative.

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Amount of gain (loss)recognized in the income statement from the hedging ineffectiveness of a fair value hedge.

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- Definition

Total amount of gain (loss) derived from fair value hedges recognized in earnings in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959

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- Definition

Fair value as of the balance sheet date of interest rate derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611

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Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities.

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Derivative Financial Instruments - Fair Value Hedges (Details) - Interest rate swaps - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Net gains and losses recognized in income related to derivatives in fair value hedging relationships
Net gains (losses) recognized on fair value hedges	$ 18	$ (67)	$ (302)	$ (243)
Minimum \| Fair value hedges
Fair hedges carried
Fixed interest rate (as a percent)	2.59%		2.59%
Maximum \| Fair value hedges
Fair hedges carried
Fixed interest rate (as a percent)	3.44%		3.44%
Net interest income \| Fair value hedges
Net gains and losses recognized in income related to derivatives in fair value hedging relationships
Expense recorded	$ (65)	(171)	$ (172)	(369)
Noninterest income
Net gains and losses recognized in income related to derivatives in fair value hedging relationships
Gains (losses) recognized on derivatives	408	(95)	958	124
Gains (losses) recognized on hedged item	(325)	199	(1,088)	2
Net gains (losses) recognized on fair value hedges (ineffective portion)	83	$ 104	(130)	$ 126
Derivatives designated as hedging instruments
Fair hedges carried
Notional amounts	193,022		193,022		$ 194,687
Derivatives designated as hedging instruments \| Fair value hedges
Fair hedges carried
Notional amounts	43,000		43,000		44,700
Positive fair value	300		300		0
Fair value losses	$ 0		$ 0		$ 500