Income Taxes (Schedule Of Deferred Tax Amounts Classified In Balance Sheets) (Details) - USD ($) |
Jun. 30, 2018 |
Sep. 30, 2017 |
|---|---|---|
| Components Of Deferred Tax Assets And Liabilities [Line Items] | ||
| Long term deferred tax assets | $ 12,194,000 | $ 8,827,000 |
| Net deferred tax assets | 12,194,000 | 8,827,000 |
| U.S. [Member] | ||
| Components Of Deferred Tax Assets And Liabilities [Line Items] | ||
| Long term deferred tax assets | 3,644,000 | 282,000 |
| U.K. [Member] | ||
| Components Of Deferred Tax Assets And Liabilities [Line Items] | ||
| Long term deferred tax assets | $ 8,550,000 | $ 8,545,000 |
| X | ||||||||||
- Definition Components Of Deferred Tax Assets And Liabilities [Line Items] No definition available.
|
| X | ||||||||||
- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting and classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|