Summary of Significant Accounting Policies (Share-Based Compensation) (Tables)

12 Months Ended

Dec. 31, 2019

Canceled/expired

Stock-based employee compensation expense (Tables)

The following table summarizes the amount of share-based compensation expense by line item on the Statement of Operations (in thousands):

		Year Ended December 31,
		2019		2018
Cost of product revenue	$	26	$	-
Research and development expense		379		439
Sales, marketing, general and administrative expense		1,209		622
	$	1,614	$	1,061