{"cik":831547,"taxonomy":"us-gaap","tag":"IncreaseDecreaseInAccountsReceivable","label":"Increase (Decrease) in Accounts Receivable","description":"The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.","entityName":"SPECTRUM PHARMACEUTICALS INC","units":{"USD":[{"start":"2009-01-01","end":"2009-12-31","val":-1118000,"accn":"0001193125-12-094639","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-02","frame":"CY2009"},{"start":"2010-01-01","end":"2010-06-30","val":-113000,"accn":"0000950123-11-072464","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-04"},{"start":"2010-01-01","end":"2010-09-30","val":807000,"accn":"0000950123-11-092613","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-10-28"},{"start":"2010-01-01","end":"2010-12-31","val":12752000,"accn":"0001193125-12-094639","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-02"},{"start":"2010-01-01","end":"2010-12-31","val":12752000,"accn":"0001193125-13-080988","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-28","frame":"CY2010"},{"start":"2011-01-01","end":"2011-03-31","val":31051000,"accn":"0001193125-12-191534","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-04-27","frame":"CY2011Q1"},{"start":"2011-01-01","end":"2011-06-30","val":25711000,"accn":"0000950123-11-072464","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-04"},{"start":"2011-01-01","end":"2011-06-30","val":25711000,"accn":"0001193125-12-344357","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-08"},{"start":"2011-01-01","end":"2011-09-30","val":26904000,"accn":"0000950123-11-092613","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-10-28"},{"start":"2011-01-01","end":"2011-09-30","val":26904000,"accn":"0001193125-12-463439","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09"},{"start":"2011-01-01","end":"2011-12-31","val":30897000,"accn":"0001193125-12-094639","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-02"},{"start":"2011-01-01","end":"2011-12-31","val":30897000,"accn":"0001193125-13-080988","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-28"},{"start":"2011-01-01","end":"2011-12-31","val":30897000,"accn":"0001193125-14-094593","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2011"},{"start":"2012-01-01","end":"2012-03-31","val":3735000,"accn":"0001193125-12-191534","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-04-27"},{"start":"2012-01-01","end":"2012-03-31","val":3735000,"accn":"0001193125-13-211369","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-09","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":33105000,"accn":"0001193125-12-344357","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-08"},{"start":"2012-01-01","end":"2012-06-30","val":33105000,"accn":"0001193125-13-327506","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-09"},{"start":"2012-01-01","end":"2012-09-30","val":32334000,"accn":"0001193125-12-463439","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09"},{"start":"2012-01-01","end":"2012-09-30","val":32334000,"accn":"0001193125-13-445714","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-18"},{"start":"2012-01-01","end":"2012-12-31","val":33504000,"accn":"0001193125-13-080988","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-28"},{"start":"2012-01-01","end":"2012-12-31","val":33504000,"accn":"0001193125-14-094593","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":33504000,"accn":"0001193125-15-091493","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-13","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":-52735000,"accn":"0001193125-13-211369","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-09"},{"start":"2013-01-01","end":"2013-03-31","val":-52735000,"accn":"0001193125-14-194949","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-12","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":-39746000,"accn":"0001193125-13-327506","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-09"},{"start":"2013-01-01","end":"2013-06-30","val":-39746000,"accn":"0001193125-14-303325","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-08"},{"start":"2013-01-01","end":"2013-09-30","val":-37187000,"accn":"0001193125-13-445714","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-18"},{"start":"2013-01-01","end":"2013-09-30","val":-37187000,"accn":"0001193125-14-406294","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-10"},{"start":"2013-01-01","end":"2013-12-31","val":-42559000,"accn":"0001193125-14-094593","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":-42559000,"accn":"0001193125-15-091493","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-13"},{"start":"2013-01-01","end":"2013-12-31","val":-42559000,"accn":"0000831547-16-000059","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-14","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":4454000,"accn":"0001193125-14-194949","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-12"},{"start":"2014-01-01","end":"2014-03-31","val":4454000,"accn":"0000831547-15-000002","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-08","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":7231000,"accn":"0001193125-14-303325","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-08"},{"start":"2014-01-01","end":"2014-06-30","val":7231000,"accn":"0000831547-15-000016","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-07"},{"start":"2014-01-01","end":"2014-09-30","val":10556000,"accn":"0001193125-14-406294","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-10"},{"start":"2014-01-01","end":"2014-09-30","val":10556000,"accn":"0000831547-15-000026","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-06"},{"start":"2014-01-01","end":"2014-12-31","val":21671000,"accn":"0001193125-15-091493","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-13"},{"start":"2014-01-01","end":"2014-12-31","val":21671000,"accn":"0000831547-16-000059","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-14"},{"start":"2014-01-01","end":"2014-12-31","val":21671000,"accn":"0000831547-17-000020","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-14","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":-1864000,"accn":"0000831547-15-000002","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-08"},{"start":"2015-01-01","end":"2015-03-31","val":-1864000,"accn":"0000831547-16-000073","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":-28966000,"accn":"0000831547-15-000016","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-07"},{"start":"2015-01-01","end":"2015-06-30","val":-28966000,"accn":"0000831547-16-000102","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-09"},{"start":"2015-01-01","end":"2015-09-30","val":-22537000,"accn":"0000831547-15-000026","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-06"},{"start":"2015-01-01","end":"2015-09-30","val":-22537000,"accn":"0000831547-16-000120","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-14"},{"start":"2015-01-01","end":"2015-12-31","val":-40245000,"accn":"0000831547-16-000059","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-14"},{"start":"2015-01-01","end":"2015-12-31","val":-40245000,"accn":"0000831547-17-000020","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-14"},{"start":"2015-01-01","end":"2015-12-31","val":-40245000,"accn":"0000831547-18-000015","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-07","frame":"CY2015"},{"start":"2016-01-01","end":"2016-03-31","val":-11186000,"accn":"0000831547-16-000073","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-06"},{"start":"2016-01-01","end":"2016-03-31","val":-11186000,"accn":"0000831547-17-000032","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-04","frame":"CY2016Q1"},{"start":"2016-01-01","end":"2016-06-30","val":3904000,"accn":"0000831547-16-000102","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-09"},{"start":"2016-01-01","end":"2016-06-30","val":3904000,"accn":"0000831547-17-000053","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-04"},{"start":"2016-01-01","end":"2016-09-30","val":12040000,"accn":"0000831547-16-000120","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-14"},{"start":"2016-01-01","end":"2016-09-30","val":12040000,"accn":"0000831547-17-000073","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-03"},{"start":"2016-01-01","end":"2016-12-31","val":9494000,"accn":"0000831547-17-000020","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-14"},{"start":"2016-01-01","end":"2016-12-31","val":9494000,"accn":"0000831547-18-000015","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-07"},{"start":"2016-01-01","end":"2016-12-31","val":9494000,"accn":"0000831547-19-000006","fy":2018,"fp":"FY","form":"10-K","filed":"2019-02-28","frame":"CY2016"},{"start":"2017-01-01","end":"2017-03-31","val":-310000,"accn":"0000831547-17-000032","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-04"},{"start":"2017-01-01","end":"2017-03-31","val":-310000,"accn":"0000831547-18-000051","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-04","frame":"CY2017Q1"},{"start":"2017-01-01","end":"2017-06-30","val":2105000,"accn":"0000831547-17-000053","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-04"},{"start":"2017-01-01","end":"2017-06-30","val":2105000,"accn":"0000831547-18-000063","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-09"},{"start":"2017-01-01","end":"2017-09-30","val":-2143000,"accn":"0000831547-17-000073","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-03"},{"start":"2017-01-01","end":"2017-09-30","val":-2143000,"accn":"0000831547-18-000071","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-08"},{"start":"2017-01-01","end":"2017-12-31","val":-7694000,"accn":"0000831547-18-000015","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-07"},{"start":"2017-01-01","end":"2017-12-31","val":-7694000,"accn":"0000831547-19-000006","fy":2018,"fp":"FY","form":"10-K","filed":"2019-02-28"},{"start":"2017-01-01","end":"2017-12-31","val":-7694000,"accn":"0000831547-20-000009","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-02","frame":"CY2017"},{"start":"2018-01-01","end":"2018-03-31","val":583000,"accn":"0000831547-18-000051","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-04"},{"start":"2018-01-01","end":"2018-03-31","val":583000,"accn":"0000831547-19-000033","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-09","frame":"CY2018Q1"},{"start":"2018-01-01","end":"2018-06-30","val":-5087000,"accn":"0000831547-18-000063","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-09"},{"start":"2018-01-01","end":"2018-06-30","val":-5087000,"accn":"0000831547-19-000047","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-09"},{"start":"2018-01-01","end":"2018-09-30","val":-3252000,"accn":"0000831547-18-000071","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-08"},{"start":"2018-01-01","end":"2018-09-30","val":-3252000,"accn":"0000831547-19-000053","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-07"},{"start":"2018-01-01","end":"2018-12-31","val":-2844000,"accn":"0000831547-19-000006","fy":2018,"fp":"FY","form":"10-K","filed":"2019-02-28"},{"start":"2018-01-01","end":"2018-12-31","val":-2844000,"accn":"0000831547-20-000009","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-02","frame":"CY2018"},{"start":"2019-01-01","end":"2019-03-31","val":-14914000,"accn":"0000831547-19-000033","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-09"},{"start":"2019-01-01","end":"2019-03-31","val":-14914000,"accn":"0000831547-20-000044","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-07","frame":"CY2019Q1"},{"start":"2019-01-01","end":"2019-06-30","val":-27314000,"accn":"0000831547-19-000047","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-09"},{"start":"2019-01-01","end":"2019-06-30","val":-27314000,"accn":"0000831547-20-000062","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-10"},{"start":"2019-01-01","end":"2019-09-30","val":-29359000,"accn":"0000831547-19-000053","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-07"},{"start":"2019-01-01","end":"2019-09-30","val":-29359000,"accn":"0000831547-20-000071","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-04"},{"start":"2019-01-01","end":"2019-12-31","val":-29420000,"accn":"0000831547-20-000009","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-02"},{"start":"2019-01-01","end":"2019-12-31","val":-29420000,"accn":"0000831547-21-000009","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-31","frame":"CY2019"},{"start":"2020-01-01","end":"2020-03-31","val":0,"accn":"0000831547-20-000044","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-07","frame":"CY2020Q1"},{"start":"2020-01-01","end":"2020-06-30","val":0,"accn":"0000831547-20-000062","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-10"},{"start":"2020-01-01","end":"2020-06-30","val":0,"accn":"0000831547-21-000073","fy":2021,"fp":"Q2","form":"10-Q","filed":"2021-08-12"},{"start":"2020-01-01","end":"2020-09-30","val":-1000,"accn":"0000831547-20-000071","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-04"},{"start":"2020-01-01","end":"2020-09-30","val":-1000,"accn":"0000831547-21-000080","fy":2021,"fp":"Q3","form":"10-Q","filed":"2021-11-10"},{"start":"2020-01-01","end":"2020-12-31","val":0,"accn":"0000831547-21-000009","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-31"},{"start":"2020-01-01","end":"2020-12-31","val":0,"accn":"0000831547-22-000014","fy":2021,"fp":"FY","form":"10-K","filed":"2022-03-18","frame":"CY2020"},{"start":"2021-01-01","end":"2021-06-30","val":-68000,"accn":"0000831547-21-000073","fy":2021,"fp":"Q2","form":"10-Q","filed":"2021-08-12"},{"start":"2021-01-01","end":"2021-06-30","val":-68000,"accn":"0000831547-22-000056","fy":2022,"fp":"Q2","form":"10-Q","filed":"2022-08-12"},{"start":"2021-01-01","end":"2021-09-30","val":-66000,"accn":"0000831547-21-000080","fy":2021,"fp":"Q3","form":"10-Q","filed":"2021-11-10"},{"start":"2021-01-01","end":"2021-09-30","val":-66000,"accn":"0000831547-22-000072","fy":2022,"fp":"Q3","form":"10-Q","filed":"2022-11-14"},{"start":"2021-01-01","end":"2021-12-31","val":-66000,"accn":"0000831547-22-000014","fy":2021,"fp":"FY","form":"10-K","filed":"2022-03-18"},{"start":"2021-01-01","end":"2021-12-31","val":-66000,"accn":"0000831547-23-000007","fy":2022,"fp":"FY","form":"10-K","filed":"2023-03-31","frame":"CY2021"},{"start":"2022-01-01","end":"2022-03-31","val":0,"accn":"0000831547-23-000012","fy":2023,"fp":"Q1","form":"10-Q","filed":"2023-05-11","frame":"CY2022Q1"},{"start":"2022-01-01","end":"2022-06-30","val":0,"accn":"0000831547-22-000056","fy":2022,"fp":"Q2","form":"10-Q","filed":"2022-08-12"},{"start":"2022-01-01","end":"2022-09-30","val":0,"accn":"0000831547-22-000072","fy":2022,"fp":"Q3","form":"10-Q","filed":"2022-11-14"},{"start":"2022-01-01","end":"2022-12-31","val":12996000,"accn":"0000831547-23-000007","fy":2022,"fp":"FY","form":"10-K","filed":"2023-03-31","frame":"CY2022"},{"start":"2023-01-01","end":"2023-03-31","val":19759000,"accn":"0000831547-23-000012","fy":2023,"fp":"Q1","form":"10-Q","filed":"2023-05-11","frame":"CY2023Q1"}]}}