Employee Benefits (Details - Amounts recognized) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Amounts recognized on Consolidated Balance Sheet
Other assets	$ 4,571	$ 2,816	$ 3,818
Other liabilities	0	0	0
Net amount recognized	4,571	2,816	3,818
Amounts recognized in accumulated other comprehensive loss consists of:
Net loss	4,130	5,716	3,794
Unrecognized transition asset	0	0	0
Net amount recognized	4,130	5,716	3,794
Components of net periodic benefit cost
Interest cost	753	579	553
Expected return on assets	(1,280)	(1,860)	(1,301)
Amortization of transition asset	0	0	0
Amortization of net  loss	358	105	896
Net periodic benefit cost	(169)	(1,176)	148
Settlement (gain)/loss	0	256	(865)
Total	(169)	(920)	(717)
Benefit Obligation Recognized in Other Comprehensive Loss (Income)
Net loss (gain)	(1,755)	1,003	(9,503)
Prior service cost (credit)	0	0	0
Amortization of prior service cost	0	0	0
Net amount recognized in other comprehensive loss (income)	$ (1,755)	$ 1,003	$ (9,503)