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Note M - Certain Relationships and Related Party Transactions (Details Textual) - USD ($) |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jan. 30, 2018 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019 | Sep. 30, 2019
Wipro [Member] |  |  |  |  |  |  |
Accounts Payable, Related Parties |  | $ 700,000 |  | $ 700,000 |  | $ 1,500,000 |
Wipro [Member] | Technology-related Services and Lease Expense [Member] |  |  |  |  |  |  |
Related Party Transaction, Expenses from Transactions with Related Party |  | 77,000 | $ 2,400,000 | 300,000 | $ 8,600,000 |  |
Related Party Transaction, Annual Savings from Transactions with Related Party |  | 300,000 |  |  |  |  |
Wipro [Member] | Credit Arising from the Reduction of Previously Accrued Termination Amount [Member] |  |  |  |  |  |  |
Related Party Transaction, Reversal of Expense from Transactions with Related Party |  |  |  | 300,000 |  |  |
Wipro [Member] | Service [Member] |  |  |  |  |  |  |
Revenue from Related Parties |  | 0 |  | 0 |  |  |
Snap Kitchen [Member] |  |  |  |  |  |  |
Revenue from Related Parties |  | $ 13,000 |  | $ 337,000 |  |  |
Snap Kitchen [Member] | Harte Hanks [Member] |  |  |  |  |  |  |
Related Party, Ownership Percentage |  |  |  |  |  |  | 9.00%
Securities Purchase Agreement [Member] | Series A Preferred Stock [Member] | Wipro [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 | $ 9,900,000 |  |  |  |  |  |

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