v3.26.1
Investments - Additional Information (Detail)
6 Months Ended
Jun. 30, 2026
Investments, Debt and Equity Securities [Abstract]
Maturity period
within one year from June 30, 2026
X
- Definition
Investment maturity period
+ References
No definition available.
+ Details
Name:
kpti_InvestmentMaturityPeriod
Namespace Prefix:
kpti_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration
X
- References
No definition available.
+ Details
Name:
us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix:
us-gaap_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration