XML 46 R32.htm IDEA: XBRL DOCUMENT v3.22.1
Note 7 - Marketable Securities - Fair Value of Available for Sale Marketable Securities (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2020
Adjusted Cost $ 2,016 $ 5,043
Unrealized Gains 0 0
Unrealized Losses (8) (2)
Fair Value 2,008 5,041
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]    
Adjusted Cost 2,016 5,043
Unrealized Gains 0 0
Unrealized Losses (8) (2)
Fair Value $ 2,008 $ 5,041