v3.26.1

Segment Reporting - Segment expenses reviewed by the CDMO (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Segment Reporting Information [Line Items]
Research and development	$ 77,889	$ 70,112
General and administrative	32,235	31,759
Total operating expenses	110,124	101,871
Loss from operations	(110,124)	(101,871)
Interest income	14,591	13,289
Other expense, net	(93)	(11)
Total other income, net	14,498	13,278
Loss before income taxes	(95,626)	(88,593)
Income tax expense	(581)	(260)
Net loss	(96,207)	(88,853)
Operating Income (Loss)	(110,124)	(101,871)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Research and development	77,889	70,112
General and administrative	32,235	31,759
Total operating expenses	110,124	101,871
Loss from operations	(110,124)	(101,871)
Interest income	14,591	13,289
Other expense, net	(93)	(11)
Total other income, net	14,498	13,278
Loss before income taxes	(95,626)	(88,593)
Net loss	(96,207)	(88,853)
Operating Income (Loss)	(110,124)	(101,871)
Total External Expenses [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Research and development	53,030	43,128
Personnel Related Expenses [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Research and development	23,881	25,732
Other Expenses [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Research and development	978	1,252
TERN-701 \| Total External Expenses [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Research and development	25,385	15,757
TERN-601 \| Total External Expenses [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Research and development	20,437	15,486
Other programs \| Total External Expenses [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Research and development	$ 7,208	$ 11,885

Total costs of sales and operating expenses for the period.

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Terns Pharmaceuticals, Inc. 10-K