| Component: (Network and Table) | |
|---|---|
| Network | 132 - Disclosure - Asset Retirement Obligation (Tables) (http://www.isoray.com/role/AssetRetirementObligationTables)  | 
| Table | (Implied) | 
| Reporting Entity [Axis] | 0000728387 (http://www.sec.gov/CIK) | 
| Asset Retirement Obligation Disclosure [Abstract] | Period [Axis] | |||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2015-07-01 - 2016-06-30  | ||||||||||||||||||||||||||||||||||||||||||||||||||
Asset Retirement Obligation Disclosure [Abstract]  | ||||||||||||||||||||||||||||||||||||||||||||||||||
Schedule of Change in Asset Retirement Obligation [Table Text Block]  | The ARO changed as follows:  
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