Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
NET INCOME		$ 8,543	$ 8,073	$ 16,931	$ 15,799
Other comprehensive income:
Net unrealized holding gains (losses) on available for sale securities		9,203	(242)	15,024	(9,128)
Reclassification adjustment for (gains) losses realized in income	[1]	(1)	(1)	33	(3)
Net unrealized holding gains (losses)		9,202	(243)	15,057	(9,131)
Income tax effect		(1,920)	39	(3,150)	1,905
Other comprehensive income (loss), net of tax		7,282	(204)	11,907	(7,226)
TOTAL COMPREHENSIVE INCOME		$ 15,825	$ 7,869	$ 28,838	$ 8,573

[1] Pre-tax reclassification adjustments relating to available-for-sale securities are reported in security gains and the tax impact is included in income tax expense on the consolidated statements of income.