Commitments and Contingencies	12 Months Ended
Sep. 30, 2018
Commitments And Contingent Liabilities [Abstract]
Commitments and Contingencies Disclosure [Text Block]	COMMITMENTS AND CONTINGENT LIABILITIES Operating Leases We have operating lease commitments for certain of our office, production and distribution facilities. Management expects that in the normal course of business, existing leases will be renewed or replaced. Minimum lease payments during the five years ending September 2023 and thereafter are $4,131,000, $3,187,000, $2,763,000, $2,324,000, $2,102,000 and $5,976,000, respectively. In 2018, 2017, and 2016 total operating lease expense is $4,064,000, $3,866,000 and $3,792,000, respectively. Capital Expenditures At September 30, 2018, we had construction and equipment purchase commitments totaling approximately $680,000. Income Taxes Commitments exclude unrecognized tax benefits to be recorded in accordance with FASB ASC Topic 740, Income Taxes. We are unable to reasonably estimate the ultimate amount or timing of cash settlements with the respective taxing authorities for such matters. See Note 10. We file income tax returns with the Internal Revenue Service ("IRS") and various state tax jurisdictions. From time to time, we are subject to routine audits by those agencies, and those audits may result in proposed adjustments. We have considered the alternative interpretations that may be assumed by the various taxing agencies, believe our positions taken regarding our filings are valid, and that adequate tax liabilities have been recorded to resolve such matters. However, the actual outcome cannot be determined with certainty and the difference could be material, either positively or negatively, to the Consolidated Statements of Income and Comprehensive Income (Loss) in the periods in which such matters are ultimately determined. We do not believe the final resolution of such matters will be material to our consolidated financial position or cash flows. We have various income tax examinations ongoing and at various stages of completion, but generally our income tax returns have been audited or closed to audit through 2011. Legal Proceedings We are involved in a variety of legal actions that arise in the normal course of business. Insurance coverage mitigates potential loss for certain of these matters. While we are unable to predict the ultimate outcome of these legal actions, it is our opinion that the disposition of these matters will not have a material adverse effect on our Consolidated Financial Statements, taken as a whole. Multiemployer Pension Plans One of our enterprise's bargaining units withdrew from representation, and as a result we are subject to a claim from the multiemployer pension plan for a withdrawal liability. The amount and timing of such liability will be dependent on actions taken, or not taken, by the Company and the pension plan, as well as the future investment performance and funding status of the pension plan. In 2017, we accrued a liability of $2,600,000 related to this withdrawal. The withdrawal liability determined to be due under this plan will be funded over a period of 20 years.

COMMITMENTS AND CONTINGENT LIABILITIES

Operating Leases

We have operating lease commitments for certain of our office, production and distribution facilities. Management expects that in the normal course of business, existing leases will be renewed or replaced. Minimum lease payments during the five years ending September 2023 and thereafter are $4,131,000, $3,187,000, $2,763,000, $2,324,000, $2,102,000 and $5,976,000, respectively. In 2018, 2017, and 2016 total operating lease expense is $4,064,000, $3,866,000 and $3,792,000, respectively.

Capital Expenditures

At September 30, 2018, we had construction and equipment purchase commitments totaling approximately $680,000.

Income Taxes

Commitments exclude unrecognized tax benefits to be recorded in accordance with FASB ASC Topic 740, Income Taxes. We are unable to reasonably estimate the ultimate amount or timing of cash settlements with the respective taxing authorities for such matters. See Note 10.

We file income tax returns with the Internal Revenue Service ("IRS") and various state tax jurisdictions. From time to time, we are subject to routine audits by those agencies, and those audits may result in proposed adjustments. We have considered the alternative interpretations that may be assumed by the various taxing agencies, believe our positions taken regarding our filings are valid, and that adequate tax liabilities have been recorded to resolve such matters. However, the actual outcome cannot be determined with certainty and the difference could be material, either positively or negatively, to the Consolidated Statements of Income and Comprehensive Income (Loss) in the periods in which such matters are ultimately determined. We do not believe the final resolution of such matters will be material to our consolidated financial position or cash flows.

We have various income tax examinations ongoing and at various stages of completion, but generally our income tax returns have been audited or closed to audit through 2011.

Legal Proceedings

We are involved in a variety of legal actions that arise in the normal course of business. Insurance coverage mitigates potential loss for certain of these matters. While we are unable to predict the ultimate outcome of these legal actions, it is our opinion that the disposition of these matters will not have a material adverse effect on our Consolidated Financial Statements, taken as a whole.

Multiemployer Pension Plans

One of our enterprise's bargaining units withdrew from representation, and as a result we are subject to a claim from the multiemployer pension plan for a withdrawal liability. The amount and timing of such liability will be dependent on actions taken, or not taken, by the Company and the pension plan, as well as the future investment performance and funding status of the pension plan. In 2017, we accrued a liability of $2,600,000 related to this withdrawal. The withdrawal liability determined to be due under this plan will be funded over a period of 20 years.