Equity Incentive Plans - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended		12 Months Ended
	Jan. 01, 2025	May 31, 2017	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Employee stock purchase plan, description			The 2017 ESPP provides for a six-month offering period. At the end of the purchase period, eligible employees are permitted to purchase shares of common stock at the lower of 85% of the fair market value at the beginning or end of the offering period subject to tax limitations on the total value of the purchase.
Compensation expense			$ 3,404	$ 2,927
Restricted Stock Unit
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of RSUs, Granted			1,353,293
Grant Date Fair Value, Granted			$ 16.43
Performance-based RSU
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of RSUs, Granted			544,228
Grant Date Fair Value, Granted			$ 17.74
Compensation expense			$ 300	$ 100
2017 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future grant			715,983
Percentage of payroll deductions		15.00%
Employee stock purchase plan offering period		6 months
Common stock fair market value percentage		85.00%
Shares of common stock reserved for issuance, automatic annual increase initiation period		--01-01
Percentage of number of shares of common stock outstanding						2.00%
Increase in common stock reserved for issuance	150,000
Periodic increment of common stock reserved for future issuance						150,000
2017 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock reserved for issuance, automatic annual increase initiation period		--01-01
Percentage of number of shares of common stock outstanding					5.00%		5.00%
Shares of common stock reserved for issuance, automatic annual increase start date		Jan. 01, 2018
Shares of common stock reserved for issuance, automatic annual increase end date		Jan. 01, 2027
Increase in common stock reserved for issuance	631,724

SOUNDTHINKING, INC. 10-Q