(11) Employee Benefits (Details - Reconciliation) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Retirement Benefits [Abstract]
Projected benefit obligation, beginning of year	$ 24,678	$ 22,997
Interest cost	553	693	$ 808
Assumption changes	(1,074)	2,418
Actuarial (gain) loss	(222)	(89)
Settlements	(865)	0
Benefits paid	(790)	(1,341)
Projected benefit obligation, end of year	22,280	24,678	22,997
Fair value of plan assets, beginning of year	18,165	15,910
Return on assets	8,703	2,775
Employer contribution	1,124	1,161
Expenses	(239)	(340)
Settlements	(865)	0
Settlements	865	0
Benefits paid	(790)	(1,341)
Fair value of plan assets, end of year	26,098	18,165	$ 15,910
Funded Status at end of year	$ 3,818	$ (6,513)