Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net income	$ 12,608	$ 8,266	$ 40,613	$ 24,376
Other comprehensive income, before tax
Change in net unrealized (losses) gains on debt securities without other-than-temporary impairment	(207)	(268)	(1,007)	873
Reclassification adjustment for net (gains) recognized in net income	0	0	0	(385)
Net unrealized (losses) gains on available-for-sale debt securities	(207)	(268)	(1,007)	488
Employee benefit plans:
Net actuarial (loss)	0	(1)	(206)	(446)
Reclassification adjustment for amortization of prior service cost and net actuarial loss recognized in net income	96	97	289	290
Net unrealized gains (losses) on employee benefit plans	96	96	83	(156)
Other comprehensive (loss) income, before tax	(111)	(172)	(924)	332
Income tax (benefit) expense	(23)	(36)	(194)	70
Other comprehensive (loss) income, net of tax	(88)	(136)	(730)	262
Total comprehensive income	$ 12,520	$ 8,130	$ 39,883	$ 24,638