(11) Employee Benefits (Details - Amounts recognized) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Amounts recognized on Consolidated Balance Sheet
Other assets	$ 2,816	$ 3,818	$ 0
Other liabilities	0	0	(6,513)
Net amount recognized	2,816	3,818	(6,513)
Amounts recognized in accumulated other comprehensive loss consists of:
Net loss	5,716	3,794	13,297
Unrecognized transition asset	0	0	0
Net amount recognized	5,716	3,794	13,297
Components of net periodic benefit cost
Interest cost	579	553	693
Expected return on assets	(1,860)	(1,301)	(1,150)
Amortization of transition asset	0	0	0
Amortization of net loss	105	896	839
Net periodic benefit cost	(1,176)	148	382
Settlement (gain)/loss	256	(865)
Total	(920)	(717)	382
Benefit Obligation Recognized in Other Comprehensive Loss (Income)
Net loss (gain)	1,003	(9,503)	205
Prior service cost (credit)	0	0	0
Amortization of prior service cost	0	0	0
Net amount recognized in other comprehensive loss (income)	$ 1,003	$ (9,503)	$ 205