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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- Definition

The portion of gains on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
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- Definition

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4CC
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- Definition

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.

+ References

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- Definition

Number of interest rate derivative instruments held by the entity at the reporting date.

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-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
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- Definition

Derivative Number of Derivative Instruments Associated With Loans

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Number of Loan Associated with Derivative Instrument

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Derivatives and Hedging Activities - Narrative (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($) loan derivative	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) loan derivative	Jun. 30, 2017 USD ($)	Dec. 31, 2017 USD ($) derivative
Interest Rate Swap [Member]
Derivative [Line Items]
Amount of gain (loss) related to change in fair value and other ineffectiveness	$ 100,000	$ (100,000)	$ 400,000	$ (4,700)
Cash Flow Hedging [Member] \| Interest Rate Swap [Member]
Derivative [Line Items]
Number of interest rate swaps \| derivative	0		0		0
Gain related to ineffective portion of change in fair value		$ 700,000		$ 1,400,000
Not Designated as Hedging Instrument [Member] \| Interest Rate Swap [Member]
Derivative [Line Items]
Number of loan associated with derivative repaid in full \| loan	1		1
Number of interest rate swaps \| derivative	1		1		2
Notional amount	$ 51,015,000		$ 51,015,000		$ 78,949,000
Number of derivative instrument associated with loans repaid in full \| derivative	1		1
Not Designated as Hedging Instrument [Member] \| One Interest Rate Swap [Member]
Derivative [Line Items]
Notional amount	$ 27,400,000		$ 27,400,000
Not Designated as Hedging Instrument [Member] \| One Interest Rate Swap [Member]
Derivative [Line Items]
Notional amount	$ 27,600,000		$ 27,600,000