Annual report pursuant to Section 13 and 15(d)

Stock-based compensation. (Details) - Schedule of option activity

v3.21.1
Stock-based compensation. (Details) - Schedule of option activity - $ / shares
shares in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Schedule of option activity [Abstract]    
Number of Shares, Outstanding at beginning of year 229 229
Weighted Average Exercise Price, Outstanding at beginning of year $ 4.15 $ 4.15
Number of Shares, Options exercised (22)
Weighted Average Exercise Price, Options exercised $ 3.74
Number of Shares, Outstanding at end of year 207 229
Weighted Average Exercise Price, Outstanding at end of year $ 4.16 $ 4.15
Number of Shares, Options exercisable at end of year 207 229
Weighted Average Exercise Price, Options exercisable at end of year $ 4.16 $ 4.15