Note 5 - Share-based Compensation (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

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

								Weighted
								Average		Aggregate
	Options			Exercise				Price per		intrinsic
	Outstanding			Price per share				share		Value(1)
Balance, December 31, 2021		23,186,142		$	0.12	–	0.43	$	0.19
Granted		3,782,923			0.18	–	0.24		0.22
Expired		—				—			—
Balance, June 30, 2022		26,969,065		$	0.12	–	0.43	$	0.19
Non-vested		(4,974,581	)		0.12	–	0.40		0.22
Vested, June 30, 2022		21,994,484		$	0.12	–	0.43	$	0.19	$	378,000
Balance, December 31, 2020		18,865,525		$	0.16	–	0.40	$	0.19
Granted		2,483,691			0.13	–	0.23		0.19
Balance, June 30, 2021		21,349,216		$	0.12	–	0.43	$	0.19

							Weighted
							Average		Aggregate
	Options			Exercise			Price per		intrinsic
	Outstanding			price per share			share		Value(1)
Balance, December 31, 2021		2,879,246		$0.23	–	0.94	$	0.49
Expired		(300,000	)		0.35			0.35
Balance, June 30, 2022		2,579,246		$0.23	–	0.94	$	0.50	$	—
Balance, December 31, 2020		5,689,363		$0.23	–	0.94	$	0.44
Expired		(1,453,508	)	0.39	–	0.51		0.40
Balance, June 30, 2021		4,235,508		$0.23	–	1.65	$	0.45

							Weighted
	Non-plan						average		Aggregate
	Options			Exercise			price per		Intrinsic
	outstanding			price per share			share		value(1)
Balance, December 31, 2021		20,119,207		$0.17	–	1.00	$	0.41
Granted		39,130			0.23			0.23
Balance, June 30, 2022		20,158,337		$0.17	–	1.00	$	0.41
Non-vested		(1,086,684	)	0.17	–	0.45		0.45
Vested, June 30, 2022		19,071,653		$0.17	–	1.00	$	0.41	$	44,000
Balance, December 31, 2020		20,749,583		$0.17	–	1.00	$	0.41
Granted		43,956				0.23		0.23
Balance, June 30, 2021		20,793,539		$0.17	–	1.00	$	0.41