Basis of Presentation and Significant Accounting Policies [Text Block] | 2 . Basis of Presentation and Summary of Significant Accounting Policies Consolidated Financial Statements The accompanying unaudited consolidated financial statements of the Company have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) for interim financial statements and are in the form prescribed by Article 10 X. not 10 7 10 not September 30. The accompanying unaudited consolidated financial statements include all the accounts of the holding company’s wholly owned subsidiaries, Vitamin Cottage Natural Food Markets, Inc. (the operating company) and Vitamin Cottage Two Ltd. Liability Company ( VC2 The Company has one three nine June 30, 2018 2017, Three months ended June 30 , Nine months ended June 30 , 2018 2017 2018 2017 Grocery 68 % 67 67 66 Dietary supplements 21 22 22 23 Other 11 11 11 11 100 % 100 100 100 Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities (including the fair value of assets acquired and liabilities assumed in a business combination), the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Management reviews its estimates on an ongoing basis, including those related to: allowances for self-insurance reserves; valuation of inventories; useful lives of property and equipment for depreciation and amortization; impairment of finite-lived intangible assets, long-lived assets, and goodwill; lease assumptions; and litigation based on currently available information. Changes in facts and circumstances may U.S. Tax Reform On December 22, 2017, January 1, 2018. 24.3% September 30, 2018 21.0% $4.3 nine June 30, 2018. The changes included in the Tax Reform Act are broad and complex. The final transition impacts of the Tax Reform Act may Change in Accounting Principle During the nine June 30, 2018, September 30 July 1, first fourth 10 September 30, 2018. fourth not Recent Accounting Pronouncements In January 2017, 2017 04, 350, 2017 04 2017 04 first two not January 1, 2017, first September 30, 2020. In February 2016, 2016 02, 842, 2016 02 No. 2016 02 12 2016 02 2016 02 first September 30, 2020, 2016 02 2018 11, 842, July 2018. The adoption of ASU 2016 02 2016 02 In January 2018, 2018 01, 842, 842” 2018 01 2018 01 not 842, not 840. 2016 02. In May 2014, 2014 09, 606, 2014 09 2014 09 2014 09’s 2014 09 In July 2015, 2015 14, 2014 09, one December 15, 2017. 2014 09 first September 30, 2019. Further to ASU 2014 09 2015 14, 2016 08, 606, 2016 08 March 2016 No. 2016 12, 606, 2016 12 May 2016. 2016 08 2016 12 2016 08 2016 12 2014 09. The Company currently does not 2014 09, 2016 08 2016 12; 2019. 2014 09, 2016 08 2016 12 2014 09 In June 2018, 2018 07, 718, 2018 07 2018 07 718 2018 07 first September 30, 2020, |