Note 10 - Share-based Compensation

6 Months Ended

Jun. 30, 2021

Notes to Financial Statements

Share-based Payment Arrangement [Text Block]

10. Share-based Compensation

Our Third Amended and Restated 2006 Stock Option and Incentive Plan allows for granting of incentive stock options, non-qualified stock options, stock appreciation rights, restricted stock units, unrestricted stock awards and deferred stock awards to our officers, employees, directors and consultants. The components of share-based compensation expense were as follows:

	Three months ended				Six months ended
	June 30,				June 30,
	2021		2020		2021		2020
	(in thousands)				(in thousands)
Stock option awards	$	562	$	495	$	1,156	$	995
Restricted stock units		307		308		640		587
Total share-based compensation	$	869	$	803	$	1,796	$	1,582

Stock-based compensation is included in our statements of operations as follows:

	Three months ended				Six months ended
	June 30,				June 30,
	2021		2020		2021		2020
	(in thousands)				(in thousands)
Cost of sales	$	100	$	88	$	200	$	167
Sales and marketing		119		134		288		293
General and administrative		557		495		1,118		951
Research and development		93		86		190		171
Total stock-based compensation	$	869	$	803	$	1,796	$	1,582

We did not grant any options during the six-month period ended June 30, 2021. During the six-month period ended June 30, 2020, we granted options for the purchase of 20,000 shares of our common stock. During the six months ended June 30, 2021 and 2020, we awarded restricted stock units of 1,157 and 2,292, respectively. We issued approximately 140,000 and 26,000 shares of common stock following the exercise or vesting of underlying stock options or restricted stock units during the six months ended June 30, 2021 and 2020, respectively.