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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net earnings	$ 5,337	$ 4,359
Unrealized gains (losses) on securities
Unrealized holding gains (losses) arising during the period	5,159	(3,863)
Amortization of net unrealized gains on held to maturity securities	5	18
Tax effect	(1,086)	810
Unrealized gains (losses) on securities, net of tax	4,078	(3,035)
Unrealized holding (losses) gains arising during the period on interest rate swaps	(83)	136
Total other comprehensive income (loss)	3,995	(2,899)
Comprehensive income	$ 9,332	$ 974

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