Quarterly report pursuant to Section 13 or 15(d)

Marketable Securities (Details - Marketable Securities)

v3.22.2.2
Marketable Securities (Details - Marketable Securities) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2022
Dec. 31, 2021
Net Investment Income [Line Items]    
Adjusted Cost $ 97,530 $ 113,778
Unrealized Loss (7,657) (1,255)
Fair Value 89,873 112,523
Corporate Bond Securities [Member]    
Net Investment Income [Line Items]    
Adjusted Cost 44,822 47,864
Unrealized Loss (2,968) (529)
Fair Value 41,854 47,335
US Treasury Securities [Member]    
Net Investment Income [Line Items]    
Adjusted Cost 20,922 24,410
Unrealized Loss (1,437) (257)
Fair Value 19,485 24,153
Collateralized Mortgage-Backed Securities [Member]    
Net Investment Income [Line Items]    
Adjusted Cost 6,285 7,504
Unrealized Loss (760) (143)
Fair Value 5,525 7,361
U S Agency And Government Sponsored Securities [Member]    
Net Investment Income [Line Items]    
Adjusted Cost 13,116 14,675
Unrealized Loss (1,495) (87)
Fair Value 11,621 14,588
US Treasury Notes Securities [Member]    
Net Investment Income [Line Items]    
Adjusted Cost 11,818 11,871
Unrealized Loss (988) (189)
Fair Value 10,830 11,682
Asset-Backed Securities [Member]    
Net Investment Income [Line Items]    
Adjusted Cost 567 6,456
Unrealized Loss (9) (50)
Fair Value $ 558 6,406
Commercial Paper [Member]    
Net Investment Income [Line Items]    
Adjusted Cost   998
Unrealized Loss   0
Fair Value   $ 998