Note 4 - Investments (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

Investment [Table Text Block]

	Cost or Adjusted/ Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses		Total
U.S. government and agency securities, held-to-maturity	$	1,995	$	-	$	-	$	1,995
Common stock		150		-		-		150
Total investments	$	2,145	$	-	$	-	$	2,145

Investments Classified by Contractual Maturity Date [Table Text Block]

	Cost or Amortized Cost		Percent of Total			Fair Value		Percent of Total
Due in one year or less	$	-		-	%	$	-		-	%
Due after one year through five years		1,995		100.0			1,995		100.0
Due after five years through ten years		-		-			-		-
Due after ten years		-		-			-		-
Total	$	1,995		100.0	%	$	1,995		100.0	%

Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]

	Total		Level 1		Level 2		Level 3
Common stock	$	150	$	-	$	-	$	150
Investments, at fair value		150						150
U.S. government and agency securities, held-to-maturity		1,950		-		-
Total investments	$	2,145	$	-	$	-	$	150