(11) Employee Benefits (Details - Reconciliation) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Change in Projected Benefit Obligation
Projected benefit obligation, beginning of year	$ 22,997	$ 20,085
Service cost	0	0
Interest cost	693	808	$ 775
Assumption changes	2,418	3,047
Actuarial (gain) loss	(89)	141
Settlements	0	0
Benefits paid	(1,341)	(1,084)
Projected benefit obligation, end of year	24,678	22,997	20,085
Change in Plan Assets
Fair value of plan assets, beginning of year	15,910	14,368
Return on assets	2,775	3,017
Employer contribution	1,161	0
Expenses	(340)	(391)
Settlements	0	0
Benefits paid	(1,341)	(1,084)
Fair value of plan assets, end of year	18,165	15,910	$ 14,368
Funded Status at end of year	$ (6,513)	$ (7,087)