Note 12 - Investment Securities (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Investments Classified by Contractual Maturity Date [Table Text Block]

	Less than one year		1-5 years		Total
Commercial Paper Original Maturities of 91 Days or More	$	10,987	$	-	$	10,987
Corporate Notes and Bonds		8,433		4,558		12,991
Total Investments	$	19,420	$	4,558	$	23,978

	Less than one year		1-5 years		Total
Commercial Paper Original Maturities of 91 Days or More	$	7,490	$	-	$	7,490
Corporate Notes and Bonds		12,303		5,085		17,388
Total Investments	$	19,793	$	5,085	$	24,878