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Income Taxes (Deferred Tax Assets) (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Sep. 30, 2017
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Income Tax Disclosure [Abstract] |  |
Non-current deferred tax asset | $ 6,665 | $ 9,211
Non-current deferred tax liability | (334) | (534)
Net deferred tax asset | 6,331 | 8,677
Uncollectible accounts and other reserves | 1,000 | 1,063
Depreciation and amortization | (369) | (673)
Inventories | 740 | 824
Compensation costs | 3,388 | 5,863
Tax carryforwards | 7,063 | 7,514
Valuation allowance | (3,291) | (5,952)
Identifiable intangible assets | (2,298) | (581)
Other | 98 | 619
Net deferred tax asset | $ 6,331 | $ 8,677

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- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences with jurisdictional netting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=84176650&loc=d3e31931-109318 + Details
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