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Note M - Certain Relationships and Related Party Transactions (Details Textual) - Wipro [Member] - USD ($) $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Jan. 30, 2018 | Dec. 31, 2020 | Dec. 31, 2019
Accounts Payable, Related Parties |  | $ 0 | $ 1,500
Accounts Receivable, Related Parties |  | 0 | $ 0
Technology-related Services and Lease Expense [Member] |  |  |
Related Party Transaction, Expenses from Transactions with Related Party |  | 11,700 |
Service [Member] |  |  |
Revenue from Related Parties |  | $ 0 |
Securities Purchase Agreement [Member] | Series A Preferred Stock [Member] |  |  |
Sale of Stock, Number of Shares Issued in Transaction (in shares) | 9,926 |  |
Convertible Preferred Stock, Shares Issued upon Conversion (in shares) | 1,001,614 |  |
Convertible Preferred Stock, Shares Issued upon Conversion as Percent of Common Stock Outstanding | 16.00% |  |
Sale of Stock, Consideration Received on Transaction | $ 9,900 |  |

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