Annual report pursuant to Section 13 and 15(d)

Note 13 - Summary of Stock Options - Stock-based Compensation Expense Included in the Statement of Income (Details)

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Note 13 - Summary of Stock Options - Stock-based Compensation Expense Included in the Statement of Income (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Stock-based compensation expense $ 2,651 $ 2,400
Cost of Sales [Member]    
Stock-based compensation expense 208 135
Research and Development Expense [Member]    
Stock-based compensation expense 325 192
Selling, General and Administrative Expenses [Member]    
Stock-based compensation expense $ 2,118 $ 2,073