{"cik":831547,"taxonomy":"us-gaap","tag":"CommonStockValue","label":"Common Stock, Value, Issued","description":"Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.","entityName":"SPECTRUM PHARMACEUTICALS INC","units":{"USD":[{"end":"2010-12-31","val":51000,"accn":"0000950123-11-072464","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-04"},{"end":"2010-12-31","val":51000,"accn":"0000950123-11-092613","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-10-28"},{"end":"2010-12-31","val":51000,"accn":"0001193125-12-094639","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-02","frame":"CY2010Q4I"},{"end":"2011-06-30","val":53000,"accn":"0000950123-11-072464","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-04","frame":"CY2011Q2I"},{"end":"2011-09-30","val":57000,"accn":"0000950123-11-092613","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-10-28","frame":"CY2011Q3I"},{"end":"2011-12-31","val":59000,"accn":"0001193125-12-094639","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-02"},{"end":"2011-12-31","val":59000,"accn":"0001193125-12-191534","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-04-27"},{"end":"2011-12-31","val":59000,"accn":"0001193125-12-344357","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-08"},{"end":"2011-12-31","val":59000,"accn":"0001193125-12-463439","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09"},{"end":"2011-12-31","val":59000,"accn":"0001193125-13-080988","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":60000,"accn":"0001193125-12-191534","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-04-27","frame":"CY2012Q1I"},{"end":"2012-06-30","val":60000,"accn":"0001193125-12-344357","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-08","frame":"CY2012Q2I"},{"end":"2012-09-30","val":60000,"accn":"0001193125-12-463439","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09","frame":"CY2012Q3I"},{"end":"2012-12-31","val":60000,"accn":"0001193125-13-080988","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-28"},{"end":"2012-12-31","val":60000,"accn":"0001193125-13-211369","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-09"},{"end":"2012-12-31","val":60000,"accn":"0001193125-13-327506","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-09"},{"end":"2012-12-31","val":60000,"accn":"0001193125-13-445714","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-18"},{"end":"2012-12-31","val":60000,"accn":"0001193125-14-094593","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":60000,"accn":"0001193125-13-211369","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-09","frame":"CY2013Q1I"},{"end":"2013-06-30","val":60000,"accn":"0001193125-13-327506","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-09","frame":"CY2013Q2I"},{"end":"2013-09-30","val":64000,"accn":"0001193125-13-445714","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-18","frame":"CY2013Q3I"},{"end":"2013-12-31","val":64000,"accn":"0001193125-14-094593","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":64000,"accn":"0001193125-14-194949","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-12"},{"end":"2013-12-31","val":64000,"accn":"0001193125-14-303325","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-08"},{"end":"2013-12-31","val":64000,"accn":"0001193125-14-406294","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-10"},{"end":"2013-12-31","val":64000,"accn":"0001193125-15-091493","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-13","frame":"CY2013Q4I"},{"end":"2014-03-31","val":65000,"accn":"0001193125-14-194949","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-12","frame":"CY2014Q1I"},{"end":"2014-06-30","val":66000,"accn":"0001193125-14-303325","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-08","frame":"CY2014Q2I"},{"end":"2014-09-30","val":66000,"accn":"0001193125-14-406294","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-10","frame":"CY2014Q3I"},{"end":"2014-12-31","val":66000,"accn":"0001193125-15-091493","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-13"},{"end":"2014-12-31","val":66000,"accn":"0000831547-15-000002","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-08"},{"end":"2014-12-31","val":66000,"accn":"0000831547-15-000016","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-07"},{"end":"2014-12-31","val":66000,"accn":"0000831547-15-000026","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-06"},{"end":"2014-12-31","val":66000,"accn":"0000831547-16-000059","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-14","frame":"CY2014Q4I"},{"end":"2015-03-31","val":66000,"accn":"0000831547-15-000002","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-08","frame":"CY2015Q1I"},{"end":"2015-06-30","val":66000,"accn":"0000831547-15-000016","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-07","frame":"CY2015Q2I"},{"end":"2015-09-30","val":66000,"accn":"0000831547-15-000026","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-06","frame":"CY2015Q3I"},{"end":"2015-12-31","val":68000,"accn":"0000831547-16-000059","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-14"},{"end":"2015-12-31","val":68000,"accn":"0000831547-16-000073","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-06"},{"end":"2015-12-31","val":68000,"accn":"0000831547-16-000102","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-09"},{"end":"2015-12-31","val":68000,"accn":"0000831547-16-000120","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-14"},{"end":"2015-12-31","val":68000,"accn":"0000831547-17-000020","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-14","frame":"CY2015Q4I"},{"end":"2016-03-31","val":68000,"accn":"0000831547-16-000073","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-06","frame":"CY2016Q1I"},{"end":"2016-06-30","val":75000,"accn":"0000831547-16-000102","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-09","frame":"CY2016Q2I"},{"end":"2016-09-30","val":80000,"accn":"0000831547-16-000120","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-14","frame":"CY2016Q3I"},{"end":"2016-12-31","val":80000,"accn":"0000831547-17-000020","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-14"},{"end":"2016-12-31","val":80000,"accn":"0000831547-17-000032","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-04"},{"end":"2016-12-31","val":80000,"accn":"0000831547-17-000053","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-04"},{"end":"2016-12-31","val":80000,"accn":"0000831547-17-000073","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-03"},{"end":"2016-12-31","val":80000,"accn":"0000831547-18-000015","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-07","frame":"CY2016Q4I"},{"end":"2017-03-31","val":80000,"accn":"0000831547-17-000032","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-04","frame":"CY2017Q1I"},{"end":"2017-06-30","val":80000,"accn":"0000831547-17-000053","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-04","frame":"CY2017Q2I"},{"end":"2017-09-30","val":94000,"accn":"0000831547-17-000073","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-03","frame":"CY2017Q3I"},{"end":"2017-12-31","val":100000,"accn":"0000831547-18-000015","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-07"},{"end":"2017-12-31","val":100000,"accn":"0000831547-18-000051","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-04"},{"end":"2017-12-31","val":100000,"accn":"0000831547-18-000063","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-09"},{"end":"2017-12-31","val":100000,"accn":"0000831547-18-000071","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-08"},{"end":"2017-12-31","val":100000,"accn":"0000831547-19-000006","fy":2018,"fp":"FY","form":"10-K","filed":"2019-02-28","frame":"CY2017Q4I"},{"end":"2018-03-31","val":103000,"accn":"0000831547-18-000051","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-04","frame":"CY2018Q1I"},{"end":"2018-06-30","val":103000,"accn":"0000831547-18-000063","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-09","frame":"CY2018Q2I"},{"end":"2018-09-30","val":106000,"accn":"0000831547-18-000071","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-08","frame":"CY2018Q3I"},{"end":"2018-12-31","val":110000,"accn":"0000831547-19-000006","fy":2018,"fp":"FY","form":"10-K","filed":"2019-02-28"},{"end":"2018-12-31","val":110000,"accn":"0000831547-19-000033","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-09"},{"end":"2018-12-31","val":110000,"accn":"0000831547-19-000047","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-09"},{"end":"2018-12-31","val":110000,"accn":"0000831547-19-000053","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-07"},{"end":"2018-12-31","val":110000,"accn":"0000831547-20-000009","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-02","frame":"CY2018Q4I"},{"end":"2019-03-31","val":111000,"accn":"0000831547-19-000033","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-09","frame":"CY2019Q1I"},{"end":"2019-06-30","val":112000,"accn":"0000831547-19-000047","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-09","frame":"CY2019Q2I"},{"end":"2019-09-30","val":113000,"accn":"0000831547-19-000053","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-07","frame":"CY2019Q3I"},{"end":"2019-12-31","val":113000,"accn":"0000831547-20-000009","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-02"},{"end":"2019-12-31","val":113000,"accn":"0000831547-20-000044","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-07"},{"end":"2019-12-31","val":113000,"accn":"0000831547-20-000062","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-10"},{"end":"2019-12-31","val":113000,"accn":"0000831547-20-000071","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-04"},{"end":"2019-12-31","val":113000,"accn":"0000831547-21-000009","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-31","frame":"CY2019Q4I"},{"end":"2020-03-31","val":114000,"accn":"0000831547-20-000044","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-07","frame":"CY2020Q1I"},{"end":"2020-06-30","val":118000,"accn":"0000831547-20-000062","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-10","frame":"CY2020Q2I"},{"end":"2020-09-30","val":146000,"accn":"0000831547-20-000071","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-04","frame":"CY2020Q3I"},{"end":"2020-12-31","val":146000,"accn":"0000831547-21-000009","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-31"},{"end":"2020-12-31","val":146000,"accn":"0000831547-21-000039","fy":2021,"fp":"Q1","form":"10-Q","filed":"2021-05-13"},{"end":"2020-12-31","val":146000,"accn":"0000831547-21-000073","fy":2021,"fp":"Q2","form":"10-Q","filed":"2021-08-12"},{"end":"2020-12-31","val":146000,"accn":"0000831547-21-000080","fy":2021,"fp":"Q3","form":"10-Q","filed":"2021-11-10"},{"end":"2020-12-31","val":146000,"accn":"0000831547-22-000014","fy":2021,"fp":"FY","form":"10-K","filed":"2022-03-18","frame":"CY2020Q4I"},{"end":"2021-03-31","val":154000,"accn":"0000831547-21-000039","fy":2021,"fp":"Q1","form":"10-Q","filed":"2021-05-13","frame":"CY2021Q1I"},{"end":"2021-06-30","val":164000,"accn":"0000831547-21-000073","fy":2021,"fp":"Q2","form":"10-Q","filed":"2021-08-12","frame":"CY2021Q2I"},{"end":"2021-09-30","val":164000,"accn":"0000831547-21-000080","fy":2021,"fp":"Q3","form":"10-Q","filed":"2021-11-10","frame":"CY2021Q3I"},{"end":"2021-12-31","val":165000,"accn":"0000831547-22-000014","fy":2021,"fp":"FY","form":"10-K","filed":"2022-03-18"},{"end":"2021-12-31","val":165000,"accn":"0000831547-22-000030","fy":2022,"fp":"Q1","form":"10-Q","filed":"2022-05-12"},{"end":"2021-12-31","val":165000,"accn":"0000831547-22-000056","fy":2022,"fp":"Q2","form":"10-Q","filed":"2022-08-12"},{"end":"2021-12-31","val":165000,"accn":"0000831547-22-000072","fy":2022,"fp":"Q3","form":"10-Q","filed":"2022-11-14"},{"end":"2021-12-31","val":165000,"accn":"0000831547-23-000007","fy":2022,"fp":"FY","form":"10-K","filed":"2023-03-31","frame":"CY2021Q4I"},{"end":"2022-03-31","val":179000,"accn":"0000831547-22-000030","fy":2022,"fp":"Q1","form":"10-Q","filed":"2022-05-12","frame":"CY2022Q1I"},{"end":"2022-06-30","val":185000,"accn":"0000831547-22-000056","fy":2022,"fp":"Q2","form":"10-Q","filed":"2022-08-12","frame":"CY2022Q2I"},{"end":"2022-09-30","val":203000,"accn":"0000831547-22-000072","fy":2022,"fp":"Q3","form":"10-Q","filed":"2022-11-14","frame":"CY2022Q3I"},{"end":"2022-12-31","val":203000,"accn":"0000831547-23-000007","fy":2022,"fp":"FY","form":"10-K","filed":"2023-03-31"},{"end":"2022-12-31","val":203000,"accn":"0000831547-23-000012","fy":2023,"fp":"Q1","form":"10-Q","filed":"2023-05-11","frame":"CY2022Q4I"},{"end":"2023-03-31","val":205000,"accn":"0000831547-23-000012","fy":2023,"fp":"Q1","form":"10-Q","filed":"2023-05-11","frame":"CY2023Q1I"}]}}