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Share Repurchase Program	9 Months Ended
	Sep. 30, 2025
Equity [Abstract]
Share Repurchase Program	Share Repurchase Program On May 2, 2023, the Board of Directors of Harte Hanks approved a share repurchase program to maximize shareholder value with authorization to repurchase $6.5 million of the Company’s Common Stock. As of September 30, 2025, the share repurchase program authorization availability was $4.1 million. In the three and nine months ended September 30, 2025 and 2024, the Company repurchased zero shares of common stock.

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