CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net earnings	$ 10,134	$ 7,530	$ 17,487	$ 18,910
Unrealized gains on securities
Unrealized holding gains arising during the period	502	1,232	12,988	9,716
Unrealized gains on held to maturity securities transferred to available for sale			2,265
Amortization of net unrealized gains on held to maturity securities		5	46	14
Reclassification adjustment for net losses included in net earnings				22
Tax effect	(105)	(260)	(3,205)	(2,065)
Unrealized gains on securities, net of tax	397	977	12,094	7,687
Unrealized holding gains (losses) arising during the period on interest rate swaps	99	(29)	(730)	(203)
Total other comprehensive income	496	948	11,364	7,484
Comprehensive income	$ 10,630	$ 8,478	$ 28,851	$ 26,394