{"cik":1437402,"taxonomy":"us-gaap","tag":"EarningsPerShareBasicAndDiluted","label":"Earnings Per Share, Basic and Diluted","description":"The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.","entityName":"ARDELYX, INC.","units":{"USD/shares":[{"start":"2012-01-01","end":"2012-12-31","val":-11.32,"accn":"0001564590-15-001336","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-05","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":-0.45,"accn":"0001564590-15-001336","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-05","frame":"CY2013Q1"},{"start":"2013-04-01","end":"2013-06-30","val":-0.81,"accn":"0001564590-15-001336","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-05","frame":"CY2013Q2"},{"start":"2013-07-01","end":"2013-09-30","val":-0.81,"accn":"0001564590-15-001336","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-05","frame":"CY2013Q3"},{"start":"2013-01-01","end":"2013-12-31","val":-5.82,"accn":"0001564590-15-001336","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-05"},{"start":"2013-01-01","end":"2013-12-31","val":-5.82,"accn":"0001193125-16-493375","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-04","frame":"CY2013"},{"start":"2013-10-01","end":"2013-12-31","val":-3.53,"accn":"0001564590-15-001336","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-05","frame":"CY2013Q4"},{"start":"2014-01-01","end":"2014-03-31","val":-2.44,"accn":"0001193125-15-183935","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-12","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-12-31","val":-0.31,"accn":"0001564590-15-001336","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-05"},{"start":"2014-01-01","end":"2014-12-31","val":-0.31,"accn":"0001193125-16-493375","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-04"},{"start":"2014-01-01","end":"2014-12-31","val":-0.31,"accn":"0001193125-17-047972","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-17","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":-0.19,"accn":"0001193125-15-183935","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-12"},{"start":"2015-01-01","end":"2015-03-31","val":-0.19,"accn":"0001193125-16-583829","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-09","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-09-30","val":-0.58,"accn":"0001193125-16-761639","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-07"},{"start":"2015-07-01","end":"2015-09-30","val":-0.7,"accn":"0001193125-16-761639","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-07","frame":"CY2015Q3"},{"start":"2015-01-01","end":"2015-12-31","val":-1.29,"accn":"0001193125-16-493375","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-04"},{"start":"2015-01-01","end":"2015-12-31","val":-1.29,"accn":"0001193125-17-047972","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-17"},{"start":"2015-01-01","end":"2015-12-31","val":-1.29,"accn":"0001558370-18-002056","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-14","frame":"CY2015"},{"start":"2016-01-01","end":"2016-03-31","val":-0.7,"accn":"0001193125-16-583829","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-09"},{"start":"2016-01-01","end":"2016-03-31","val":-0.7,"accn":"0001193125-17-047972","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-17"},{"start":"2016-01-01","end":"2016-03-31","val":-0.7,"accn":"0001193125-17-159933","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-05"},{"start":"2016-01-01","end":"2016-03-31","val":-0.7,"accn":"0001558370-18-002056","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-14","frame":"CY2016Q1"},{"start":"2016-01-01","end":"2016-06-30","val":-1.53,"accn":"0001193125-17-252121","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-09"},{"start":"2016-04-01","end":"2016-06-30","val":-0.83,"accn":"0001193125-17-047972","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-17"},{"start":"2016-04-01","end":"2016-06-30","val":-0.83,"accn":"0001193125-17-252121","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-09"},{"start":"2016-04-01","end":"2016-06-30","val":-0.83,"accn":"0001558370-18-002056","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-14","frame":"CY2016Q2"},{"start":"2016-01-01","end":"2016-09-30","val":-2.15,"accn":"0001193125-16-761639","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-07"},{"start":"2016-01-01","end":"2016-09-30","val":-2.15,"accn":"0001193125-17-334997","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-07"},{"start":"2016-07-01","end":"2016-09-30","val":-0.65,"accn":"0001193125-16-761639","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-07"},{"start":"2016-07-01","end":"2016-09-30","val":-0.65,"accn":"0001193125-17-047972","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-17"},{"start":"2016-07-01","end":"2016-09-30","val":-0.65,"accn":"0001193125-17-334997","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-07"},{"start":"2016-07-01","end":"2016-09-30","val":-0.65,"accn":"0001558370-18-002056","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-14","frame":"CY2016Q3"},{"start":"2016-01-01","end":"2016-12-31","val":-2.8,"accn":"0001193125-17-047972","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-17"},{"start":"2016-01-01","end":"2016-12-31","val":-2.8,"accn":"0001558370-18-002056","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-14"},{"start":"2016-01-01","end":"2016-12-31","val":-2.8,"accn":"0001558370-19-001583","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-06","frame":"CY2016"},{"start":"2016-10-01","end":"2016-12-31","val":-0.66,"accn":"0001193125-17-047972","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-17"},{"start":"2016-10-01","end":"2016-12-31","val":-0.66,"accn":"0001558370-18-002056","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-14","frame":"CY2016Q4"},{"start":"2017-01-01","end":"2017-03-31","val":-0.59,"accn":"0001193125-17-159933","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-05"},{"start":"2017-01-01","end":"2017-03-31","val":-0.59,"accn":"0001558370-18-004307","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-08","frame":"CY2017Q1"},{"start":"2017-01-01","end":"2017-06-30","val":-1.13,"accn":"0001193125-17-252121","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-09"},{"start":"2017-01-01","end":"2017-06-30","val":-1.13,"accn":"0001558370-18-006606","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-07"},{"start":"2017-04-01","end":"2017-06-30","val":-0.54,"accn":"0001193125-17-252121","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-09"},{"start":"2017-04-01","end":"2017-06-30","val":-0.54,"accn":"0001558370-18-006606","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-07","frame":"CY2017Q2"},{"start":"2017-01-01","end":"2017-09-30","val":-1.57,"accn":"0001193125-17-334997","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-07"},{"start":"2017-01-01","end":"2017-09-30","val":-1.57,"accn":"0001558370-18-008786","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-07"},{"start":"2017-07-01","end":"2017-09-30","val":-0.44,"accn":"0001193125-17-334997","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-07"},{"start":"2017-07-01","end":"2017-09-30","val":-0.44,"accn":"0001558370-18-008786","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-07","frame":"CY2017Q3"},{"start":"2017-01-01","end":"2017-12-31","val":-1.36,"accn":"0001558370-18-002056","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-14"},{"start":"2017-01-01","end":"2017-12-31","val":-1.36,"accn":"0001558370-19-001583","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-06"},{"start":"2017-01-01","end":"2017-12-31","val":-1.36,"accn":"0001558370-20-002138","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-06","frame":"CY2017"},{"start":"2018-01-01","end":"2018-03-31","val":-0.36,"accn":"0001558370-18-004307","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-08"},{"start":"2018-01-01","end":"2018-03-31","val":-0.36,"accn":"0001558370-19-001583","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-06"},{"start":"2018-01-01","end":"2018-03-31","val":-0.36,"accn":"0001558370-19-004249","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-07"},{"start":"2018-01-01","end":"2018-03-31","val":-0.36,"accn":"0001558370-20-002138","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-06","frame":"CY2018Q1"},{"start":"2018-01-01","end":"2018-06-30","val":-0.78,"accn":"0001558370-18-006606","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-07"},{"start":"2018-01-01","end":"2018-06-30","val":-0.78,"accn":"0001558370-19-007809","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-09"},{"start":"2018-04-01","end":"2018-06-30","val":-0.42,"accn":"0001558370-18-006606","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-07"},{"start":"2018-04-01","end":"2018-06-30","val":-0.42,"accn":"0001558370-19-001583","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-06"},{"start":"2018-04-01","end":"2018-06-30","val":-0.42,"accn":"0001558370-19-007809","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-09"},{"start":"2018-04-01","end":"2018-06-30","val":-0.42,"accn":"0001558370-20-002138","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-06","frame":"CY2018Q2"},{"start":"2018-01-01","end":"2018-09-30","val":-1.17,"accn":"0001558370-18-008786","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-07"},{"start":"2018-01-01","end":"2018-09-30","val":-1.17,"accn":"0001558370-19-010174","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-06"},{"start":"2018-07-01","end":"2018-09-30","val":-0.39,"accn":"0001558370-18-008786","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-07"},{"start":"2018-07-01","end":"2018-09-30","val":-0.39,"accn":"0001558370-19-001583","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-06"},{"start":"2018-07-01","end":"2018-09-30","val":-0.39,"accn":"0001558370-19-010174","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-06"},{"start":"2018-07-01","end":"2018-09-30","val":-0.39,"accn":"0001558370-20-002138","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-06","frame":"CY2018Q3"},{"start":"2018-01-01","end":"2018-12-31","val":-1.62,"accn":"0001558370-19-001583","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-06"},{"start":"2018-01-01","end":"2018-12-31","val":-1.62,"accn":"0001558370-20-002138","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-06"},{"start":"2018-01-01","end":"2018-12-31","val":-1.62,"accn":"0001558370-21-002500","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-08","frame":"CY2018"},{"start":"2018-10-01","end":"2018-12-31","val":-0.45,"accn":"0001558370-19-001583","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-06"},{"start":"2018-10-01","end":"2018-12-31","val":-0.45,"accn":"0001558370-20-002138","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-06","frame":"CY2018Q4"},{"start":"2019-01-01","end":"2019-03-31","val":-0.42,"accn":"0001558370-19-004249","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-07"},{"start":"2019-01-01","end":"2019-03-31","val":-0.42,"accn":"0001558370-20-002138","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-06"},{"start":"2019-01-01","end":"2019-03-31","val":-0.42,"accn":"0001558370-20-005688","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-07"},{"start":"2019-01-01","end":"2019-03-31","val":-0.42,"accn":"0001558370-21-002500","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-08","frame":"CY2019Q1"},{"start":"2019-01-01","end":"2019-06-30","val":-0.82,"accn":"0001558370-19-007809","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-09"},{"start":"2019-01-01","end":"2019-06-30","val":-0.82,"accn":"0001558370-20-009636","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-06"},{"start":"2019-04-01","end":"2019-06-30","val":-0.41,"accn":"0001558370-19-007809","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-09"},{"start":"2019-04-01","end":"2019-06-30","val":-0.41,"accn":"0001558370-20-002138","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-06"},{"start":"2019-04-01","end":"2019-06-30","val":-0.41,"accn":"0001558370-20-009636","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-06"},{"start":"2019-04-01","end":"2019-06-30","val":-0.41,"accn":"0001558370-21-002500","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-08","frame":"CY2019Q2"},{"start":"2019-01-01","end":"2019-09-30","val":-1.2,"accn":"0001558370-19-010174","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-06"},{"start":"2019-01-01","end":"2019-09-30","val":-1.2,"accn":"0001558370-20-012720","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-05"},{"start":"2019-07-01","end":"2019-09-30","val":-0.37,"accn":"0001558370-19-010174","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-06"},{"start":"2019-07-01","end":"2019-09-30","val":-0.37,"accn":"0001558370-20-002138","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-06"},{"start":"2019-07-01","end":"2019-09-30","val":-0.37,"accn":"0001558370-20-012720","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-05"},{"start":"2019-07-01","end":"2019-09-30","val":-0.37,"accn":"0001558370-21-002500","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-08","frame":"CY2019Q3"},{"start":"2019-01-01","end":"2019-12-31","val":-1.47,"accn":"0001558370-20-002138","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-06"},{"start":"2019-01-01","end":"2019-12-31","val":-1.47,"accn":"0001558370-21-002500","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-08","frame":"CY2019"},{"start":"2019-10-01","end":"2019-12-31","val":-0.27,"accn":"0001558370-20-002138","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-06"},{"start":"2019-10-01","end":"2019-12-31","val":-0.27,"accn":"0001558370-21-002500","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-08","frame":"CY2019Q4"},{"start":"2020-01-01","end":"2020-03-31","val":-0.25,"accn":"0001558370-20-005688","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-07"},{"start":"2020-01-01","end":"2020-03-31","val":-0.25,"accn":"0001558370-21-002500","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-08","frame":"CY2020Q1"},{"start":"2020-01-01","end":"2020-06-30","val":-0.53,"accn":"0001558370-20-009636","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-06"},{"start":"2020-04-01","end":"2020-06-30","val":-0.28,"accn":"0001558370-20-009636","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-06"},{"start":"2020-04-01","end":"2020-06-30","val":-0.28,"accn":"0001558370-21-002500","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-08","frame":"CY2020Q2"},{"start":"2020-01-01","end":"2020-09-30","val":-0.73,"accn":"0001558370-20-012720","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-05"},{"start":"2020-07-01","end":"2020-09-30","val":-0.2,"accn":"0001558370-20-012720","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-05"},{"start":"2020-07-01","end":"2020-09-30","val":-0.2,"accn":"0001558370-21-002500","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-08","frame":"CY2020Q3"},{"start":"2020-01-01","end":"2020-12-31","val":-1.05,"accn":"0001558370-21-002500","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-08","frame":"CY2020"},{"start":"2020-10-01","end":"2020-12-31","val":-0.32,"accn":"0001558370-21-002500","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-08","frame":"CY2020Q4"}]}}