{"cik":1377121,"taxonomy":"us-gaap","tag":"LongTermDebt","label":"Long-term Debt","description":"Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.","entityName":"Protagonist Therapeutics, Inc","units":{"USD":[{"end":"2019-12-31","val":9794000,"accn":"0001558370-20-002334","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-10"},{"end":"2019-12-31","val":9794000,"accn":"0001558370-20-005785","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-07"},{"end":"2019-12-31","val":9794000,"accn":"0001558370-20-009681","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-06"},{"end":"2019-12-31","val":9794000,"accn":"0001558370-20-012597","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-04"},{"end":"2019-12-31","val":9794000,"accn":"0001558370-21-002715","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-10","frame":"CY2019Q4I"},{"end":"2020-03-31","val":9832000,"accn":"0001558370-20-005785","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-07","frame":"CY2020Q1I"}]}}