Note 7 - Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

	Stock Options		Grant Date Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (in Years)		Intrinsic Value
Outstanding at January 1, 2022		67,000	$	2.72		3.33	$	-
Outstanding at March 31, 2022		67,000	$	2.72		3.09	$	4,000
Exercisable at March 31, 2022		59,000	$	2.72		2.77	$	-
Outstanding at January 1, 2021		417,000	$	2.79		1.61	$	2,000
Outstanding at March 31, 2021		417,000	$	2.79		1.36	$	19,000
Exercisable at March 31, 2021		407,000	$	2.80		1.27	$	-