The aggregate intrinsic value in the table above is based on our closing stock price of $4.40 on the last business day for the year ended December 31, 2021. (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares exercised	535,100
Cash received	$ 234	$ 37
Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares exercised	535,100	84,500
Total intrinsic value	$ 1,169	$ 10
Cash received	$ 234	$ 37

Amount of cash inflow from exercise of option under share-based payment arrangement.

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