CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net earnings	$ 10,962	$ 6,278
Unrealized (losses) gains on securities
Unrealized holding (losses) gains arising during the period	(2,831)	1,104
Unrealized gains on held to maturity securities transferred to available for sale		2,265
Amortization of net unrealized gains on held to maturity securities		46
Tax effect	596	(710)
Unrealized (losses) gains on securities, net of tax	(2,235)	2,705
Unrealized holding gains (losses) arising during the period on interest rate swaps	449	(586)
Total other comprehensive (loss) income	(1,786)	2,119
Comprehensive income	$ 9,176	$ 8,397