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Accumulated Other Comprehensive Loss - Reclassifications from Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Securities available for sale:
Net securities gains reclassified into earnings	$ 0	$ (13)	$ 0	$ (13)
Related income tax expense	583	766	1,110	1,405
Total reclassifications	(2,451)	(1,756)	(5,138)	(3,299)
Amount Reclassified from Accumulated Other Comprehensive Loss | Net Unrealized Gains (Losses) on Securities
Securities available for sale:
Net securities gains reclassified into earnings	0	(13)	0	(13)
Related income tax expense	0	4	0	4
Total reclassifications	$ 0	$ (9)	$ 0	$ (9)

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The net gain (loss) realized from the sale, exchange, redemption, or retirement of securities, not separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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