Discontinued Operations - Loss from Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
General and administrative expense				$ 533
Pretax loss from discontinued operations				(559)
Pretax gain on disposal of discontinued operations				829
Total pretax income from discontinued operations				270
Income (loss) from discontinued operations, net of taxes	$ (48)	$ 319	$ (68)	270
Income from discontinued operations attributable to TETRA stockholders				270
Cost of revenues				54
Other income, net				(28)
Offshore Services
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
General and administrative expense		510		533
Pretax loss from discontinued operations		(510)		(587)
Pretax gain on disposal of discontinued operations		829
Total pretax income from discontinued operations		319
Income (loss) from discontinued operations, net of taxes		$ 319
Cost of revenues				54
Other income, net				0
Maritech
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
General and administrative expense				0
Pretax loss from discontinued operations				28
Cost of revenues				0
Other income, net				$ (28)