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May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.","units":{"shares":[{"end":"2011-04-30","val":0,"accn":"0001078782-11-003653","fy":2012,"fp":"Q2","form":"10-Q","filed":"2011-12-19","frame":"CY2011Q1I"},{"end":"2011-10-31","val":0,"accn":"0001078782-11-003653","fy":2012,"fp":"Q2","form":"10-Q","filed":"2011-12-19","frame":"CY2011Q3I"},{"end":"2013-04-30","val":0,"accn":"0001078782-13-002454","fy":2014,"fp":"Q2","form":"10-Q","filed":"2013-12-16","frame":"CY2013Q1I"},{"end":"2013-10-31","val":0,"accn":"0001078782-13-002454","fy":2014,"fp":"Q2","form":"10-Q","filed":"2013-12-16","frame":"CY2013Q3I"},{"end":"2019-04-30","val":500000,"accn":"0001078782-20-000180","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-03-13","frame":"CY2019Q1I"},{"end":"2019-06-17","val":530000,"accn":"0001078782-20-000180","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-03-13"},{"end":"2019-06-17","val":530000,"accn":"0001445866-20-000479","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-04-29"},{"end":"2019-06-17","val":530000,"accn":"0001445866-20-000608","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-05-13"},{"end":"2019-06-17","val":530000,"accn":"0001445866-20-001088","fy":2020,"fp":"FY","form":"10-K","filed":"2020-07-31"},{"end":"2019-06-17","val":530000,"accn":"0001445866-20-001408","fy":2021,"fp":"Q1","form":"10-Q/A","filed":"2020-09-28"},{"end":"2019-06-17","val":530000,"accn":"0001096906-20-000515","fy":2021,"fp":"Q2","form":"10-Q","filed":"2020-12-16"},{"end":"2019-06-17","val":530000,"accn":"0001096906-21-000531","fy":2021,"fp":"Q3","form":"10-Q","filed":"2021-03-22"},{"end":"2019-06-17","val":530000,"accn":"0001096906-21-002272","fy":2021,"fp":"FY","form":"10-K","filed":"2021-09-15"},{"end":"2019-06-17","val":530000,"accn":"0001096906-21-002444","fy":2022,"fp":"Q1","form":"10-Q","filed":"2021-10-06"},{"end":"2019-06-17","val":583000,"accn":"0001096906-21-002997","fy":2022,"fp":"Q2","form":"10-Q","filed":"2021-12-15"},{"end":"2019-06-17","val":583000,"accn":"0001096906-22-000559","fy":2022,"fp":"Q3","form":"10-Q","filed":"2022-03-17","frame":"CY2019Q2I"},{"end":"2019-07-31","val":500000,"accn":"0001078782-20-000180","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-03-13"}]}},"PreferredStockSharesOutstanding":{"label":"Preferred Stock, Shares Outstanding","description":"Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. 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