Note 9 - Share-based Compensation

3 Months Ended

Mar. 31, 2020

Notes to Financial Statements

Share-based Payment Arrangement [Text Block]

9.

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
	March 31,
	2020		2019
	(in thousands)
Stock option awards	$	500	$	447
Restricted stock units		279		299
Total share-based compensation	$	779	$	746

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

	Three months ended
	March 31,
	2020		2019
	(in thousands)
Cost of sales	$	81	$	82
Sales and marketing		159		158
General and administrative		454		419
Research and development		85		87
Total stock-based compensation	$	779	$	746

We did

not

grant any options during the

three

-month periods ended

March 31, 2020

or

2019.

During the quarter ended

March 31, 2020,

we awarded

2,100

restricted stock units. We issued approximately

23,000

and

63,000

shares of common stock following the exercise or vesting of underlying stock options or restricted stock units during the

three

months ended

March 31, 2020

and

2019,

respectively.