XML 63 R48.htm IDEA: XBRL DOCUMENT v3.21.1
Note E - Convertible Preferred Stock (Details Textual)
$ / shares in Units, $ in Thousands
 12 Months Ended
Jan. 30, 2018
USD ($)
$ / shares
shares
Dec. 31, 2020
USD ($)
$ / shares
shares
Dec. 31, 2019
USD ($)
shares
Preferred Stock, Shares Authorized (in shares) | shares   1,000,000 1,000,000
Payments of Stock Issuance Costs   $ 6
Series A Preferred Stock [Member]      
Preferred Stock, Dividend Rate, Percentage   5.00%  
Temporary Equity, Liquidation Preference   $ 1,400  
Temporary Equity, Liquidation Preference Per Share (in dollars per share) | $ / shares   $ 146.03  
Convertible Preferred Stock, Conversion Ratio   100.91  
Series A Preferred Stock [Member] | Wipro [Member]      
Stock Issued During Period, Shares, New Issues (in shares) | shares 9,926    
Shares Issued, Price Per Share (in dollars per share) | $ / shares $ 1,000    
Stock Issued During Period, Value, New Issues $ 9,900    
Payments of Stock Issuance Costs 200    
Proceeds from Issuance of Preferred Stock and Preference Stock $ 9,900