Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Investments - Securities in a Continuous Unrealized Loss Position (Details)

v3.22.1
Note 3 - Investments - Securities in a Continuous Unrealized Loss Position (Details)
$ in Thousands
Mar. 31, 2022
USD ($)
Less than 12 months, fair value $ 23,735
Less than 12 months, gross unrealized losses 852
12 months or greater, fair value 3,373
12 months or greater, gross unrealized losses 99
US Treasury Securities [Member]  
Less than 12 months, fair value 15,463
Less than 12 months, gross unrealized losses 694
12 months or greater, fair value 0
12 months or greater, gross unrealized losses 0
Certificates of Deposit [Member]  
Less than 12 months, fair value 8,272
Less than 12 months, gross unrealized losses 158
12 months or greater, fair value 3,373
12 months or greater, gross unrealized losses $ 99