Accumulated Other Comprehensive Income (Loss) - Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
(Loss) gain on sale of investment securities available for sale	$ (4)	$ 331	$ 234	$ 888
Income tax (benefit) expense	2,572	5,938	6,206	15,116
Total, net of tax	(4)	215	184	577
Gains and Losses on Available-for-Sale Securities [Member] \| Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
(Loss) gain on sale of investment securities available for sale	(4)	331	234	888
Income tax (benefit) expense	$ 0	$ 116	$ 50	$ 311

Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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-Publisher FASB
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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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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No definition available.

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Amount after tax of reclassification adjustments of other comprehensive income (loss) attributable to parent.

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