Income Taxes (Schedule Of Deferred Tax Amounts Classified In Balance Sheets) (Details) - USD ($) |
Dec. 31, 2017 |
Sep. 30, 2017 |
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| Components Of Deferred Tax Assets And Liabilities [Line Items] | ||
| Long term deferred tax assets | $ 12,124,000 | $ 8,827,000 |
| Net deferred tax assets | 12,124,000 | 8,827,000 |
| U.S. [Member] | ||
| Components Of Deferred Tax Assets And Liabilities [Line Items] | ||
| Long term deferred tax assets | 3,579,000 | 282,000 |
| U.K. [Member] | ||
| Components Of Deferred Tax Assets And Liabilities [Line Items] | ||
| Long term deferred tax assets | $ 8,545,000 | $ 8,545,000 |
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- Definition Components Of Deferred Tax Assets And Liabilities [Line Items] No definition available.
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- 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
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- 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
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