Consolidated Condensed Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Net income (loss)	$ (64)us-gaap_NetIncomeLoss	$ 1,426us-gaap_NetIncomeLoss	$ (1,469)us-gaap_NetIncomeLoss	$ 2,373us-gaap_NetIncomeLoss
Other comprehensive income (loss), net of tax:
Retirement plan liability adjustment	132	153	261	302
Interest rate swap agreement adjustment	0	8	5	17
Comprehensive income (loss)	$ 68us-gaap_ComprehensiveIncomeNetOfTax	$ 1,587us-gaap_ComprehensiveIncomeNetOfTax	$ (1,203)us-gaap_ComprehensiveIncomeNetOfTax	$ 2,692us-gaap_ComprehensiveIncomeNetOfTax

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount after tax and reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.

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