Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement Of Income And Comprehensive Income [Abstract]
NET INCOME		$ 8,084	$ 5,983	$ 23,883	$ 17,476
Other comprehensive income:
Net unrealized holding gains (losses) on available for sale securities		(4,929)	(679)	(14,057)	5,642
Reclassification adjustment for losses realized in income	[1]	27	0	24	1
Net unrealized holding gains (losses)		(4,902)	(679)	(14,033)	5,643
Income tax effect		1,030	239	2,935	(1,976)
Other comprehensive income (loss), net of tax		(3,872)	(440)	(11,098)	3,667
TOTAL COMPREHENSIVE INCOME		$ 4,212	$ 5,543	$ 12,785	$ 21,143

[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.