Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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-Section 45
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Amount, before tax, of unrealized gain (loss) in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

No definition available.

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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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Basis of Presentation - Schedule of Reclassification of Debt Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 907,433		$ 882,872
Securities available for sale (at fair value)	914,615		865,831
Private mortgage-backed securities and collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	64,224		55,569
Securities available for sale (at fair value)	65,911		55,728
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	242,702		212,807
Securities available for sale (at fair value)	$ 241,571		$ 209,366
Accounting Standards Update 2017-12
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		$ 53,526
Net Unrealized Gain (Loss) Reflected in OCI		(730)
Securities available for sale (at fair value)		52,796
Accounting Standards Update 2017-12 \| Private mortgage-backed securities and collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		21,526
Net Unrealized Gain (Loss) Reflected in OCI		147
Securities available for sale (at fair value)		21,673
Accounting Standards Update 2017-12 \| Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		32,000
Net Unrealized Gain (Loss) Reflected in OCI		(877)
Securities available for sale (at fair value)		$ 31,123