CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 8,024	$ 6,795	$ 14,891	$ 13,325
Other comprehensive income (loss):
Net unrealized gains (losses)	(24,050)	5,265	(66,165)	(8,367)
Tax effect	(6,303)	1,372	(17,331)	(2,107)
Net of tax amount	(17,747)	3,893	(48,834)	(6,260)
Change in funded status of defined benefit pension plan and other benefit plans:
Reclassification adjustment for amortization of prior service costs	0	(55)	0	(110)
Reclassification adjustment for amortization of net actuarial loss	11	57	25	112
Total before tax effect	11	2	25	2
Tax effect	4	1	6	1
Net of tax amount	7	1	19	1
Total other comprehensive income (loss)	(17,740)	3,894	(48,815)	(6,259)
Comprehensive income (loss)	$ (9,716)	$ 10,689	$ (33,924)	$ 7,066