Note 9 - Stock-based Payments for Compensation, Services and Royalties

3 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Disclosure of Compensation Related Costs, Share-based Payments [Text Block]

9.

STOCK-BASED PAYMENTS FOR COMPENSATION, SERVICES AND ROYALTIES

The Company records its stock-based compensation expense under its stock option plans and the Company also issues stock for services and royalties. A detailed description of the awards under these plans and the respective accounting treatment is included in the “Notes to the Consolidated Financial Statements” included in the Company’s Annual Report on Form

10

-K for the year ended

December 

31,

2017

and filed with the SEC on

March 14, 2018.

The Company did

not

grant any stock options in the

three

months ended

March 

31,

2018.

For the

three

months ended

March 

31,

2018,

and

2017,

the Company recorded stock-based expense of

$66

thousand and

$91

thousand, respectively.