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 aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4H
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624258-113959

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- Definition

The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=112277219&loc=d3e80845-113994

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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

No definition available.

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- Definition

The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4H
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624258-113959

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
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-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959

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Derivative Instruments and Hedging Activities - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($) interest_rate_swap interest_rate_cap	Sep. 30, 2018 USD ($)	Dec. 31, 2017 USD ($) interest_rate_swap interest_rate_cap
Derivative [Line Items]
Termination value of derivatives in a net liability position	$ 3,302
Derivative collateral posted	5,195
Not Designated as Hedging Instruments
Derivative [Line Items]
Notional amount of interest rate derivatives	477,776
Cash Flow Hedging
Derivative [Line Items]
Estimated amount to be transferred from OCI to earnings	$ 208
Interest Rate Swap
Derivative [Line Items]
Number of interest rate derivatives held \| interest_rate_swap	4		5
Notional amount of interest rate derivatives	$ 46,000	$ 10,000	$ 56,000
Interest Rate Swap \| Cash Flow Hedging \| Trust Preferred Debt
Derivative [Line Items]
Notional amount of interest rate derivatives	26,000
Interest Rate Swap \| Cash Flow Hedging \| Federal Home Loan Bank Advances
Derivative [Line Items]
Notional amount of interest rate derivatives	$ 20,000
Interest Rate Cap
Derivative [Line Items]
Number of interest rate derivatives held \| interest_rate_cap	1		1
Notional amount of interest rate derivatives	$ 13,000		$ 13,000
Interest Rate Cap \| Cash Flow Hedging \| Trust Preferred Debt
Derivative [Line Items]
Notional amount of interest rate derivatives	$ 13,000