Note 11 - Income Taxes	6 Months Ended
Note 11 - Income Taxes	Mar. 31, 2020
Notes to Financial Statements
Income Tax Disclosure [Text Block]	1 1 . Income Taxes Income taxes are accounted for in accordance with the provisions of ASC 740. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis. Deferred tax assets and liabilities are remeasured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Valuation allowances are established, when necessary, to reduce deferred tax assets to the amounts expected to be realized. On March 27, 2020, the Coronavirus Aid, Relief and Economic Security Act (the “CARES Act”) was signed into law. Intended to provide economic relief to those impacted by the COVID- 19 pandemic, the CARES Act, among other things, includes provisions addressing the carryback of net operating losses for specific periods, temporary modifications to the limitations placed on the tax deductibility of net interest expenses, and technical amendments for qualified improvement property (“QIP”). As a result of the technical amendments made by the CARES Act to QIP, the Company is currently analyzing the acceleration of depreciation expenses. These accelerated tax depreciation expenses of approximately $4.0 million represent temporary book-to-tax timing differences for income tax purposes (and will therefore have no effective tax rate impact) and are recorded as components within the Company’s deferred income tax liabilities and income tax receivable on the Company’s consolidated balance sheets. The Company is still estimating the potential benefits of addressing the carryback of net operating losses related to the accelerated depreciation expenses. However, the Company does not anticipate that this will have a material impact on the Company’s consolidated financial statements.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.