Stockholders' Equity - Schedule of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock compensation expense capitalized to inventory	$ (176)	$ 337	$ (180)	$ 805
Total stock-based compensation expense recorded to additional paid-in capital	25,128	22,353	55,278	45,247
Equity based awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	24,342	21,151	48,021	41,818
Equity based awards \| Cost of revenue
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	762	315	1,394	491
Equity based awards \| Research and development
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	10,171	8,623	20,202	17,236
Equity based awards \| Selling, general and administrative
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	13,409	12,213	26,425	24,091
Liability based awards - to be settled in equity
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	1,984	1,766	3,351	2,802
Liability based awards - to be settled in equity \| Cost of revenue
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	63	12	132	16
Liability based awards - to be settled in equity \| Research and development
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	873	791	1,523	1,354
Liability based awards - to be settled in equity \| Selling, general and administrative
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	1,048	963	1,696	1,432
Total stock-based compensation expense - equity and liability based
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	26,326	22,917	51,372	44,620
Liability based awards - settled in equity
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	$ 962	$ 865	$ 7,437	$ 2,624

SITIME Corp 10-Q