Long-Term Debt	3 Months Ended
Dec. 31, 2017
Debt Disclosure [Abstract]
Long-Term Debt	7. Long-Term Debt The Company had no long-term debt outstanding at December 31, 2017 and September 30, 2017. On March 2, 2011, the Company entered into a credit agreement with Frost Bank with borrowing availability of $50.0 million (the “Credit Agreement”). On May 4, 2015, the Company amended the Credit Agreement which reduced its borrowing availability to $30.0 million with amounts available for borrowing determined by a borrowing base. On October 25, 2017, the Company entered into another amendment to the Credit Agreement which extended its maturity to April 30, 2019. The 2017 amendment also modified the borrowing base to be determined based upon certain of the Company’s assets which include (i) 80% of certain accounts receivable plus (ii) 50% of certain notes receivable (such result not to exceed $10 million) plus (iii) 25% of certain inventories (such result not to exceed $20 million) and requires the Company to maintain unencumbered liquid assets of $10 million. The 2017 amendment also removed a requirement that the Company maintain a financial ratio that compares certain of the Company’s assets to certain of its liabilities and imposed a new financial covenant that the Company maintain a minimum amount of certain liquid assets. As of December 31, 2017, the Company’s borrowing base was $26.6 million. As of December 31, 2017, the amount available for borrowing was $26.3 million after consideration of $0.3 million of outstanding letters of credit. The Company’s domestic subsidiaries have guaranteed the obligations of the Company under the Credit Agreement and such subsidiaries have secured their obligations under such guarantees by the pledge of substantially all of the assets of such subsidiaries, except real property assets. The Company is required to make monthly interest payments on borrowed funds. The Credit Agreement limits the incurrence of additional indebtedness, restricts the Company and its subsidiaries’ ability to pay cash dividends and contains other covenants customary in agreements of this type. The interest rate for borrowings under the Credit Agreement is based on the Wall Street Journal prime rate, which was 4.50% at December 31, 2017. At December 31, 2017, the Company was in compliance with all covenants under the Credit Agreement.

7. Long-Term Debt

The Company had no long-term debt outstanding at December 31, 2017 and September 30, 2017.

On March 2, 2011, the Company entered into a credit agreement with Frost Bank with borrowing availability of $50.0 million (the “Credit Agreement”). On May 4, 2015, the Company amended the Credit Agreement which reduced its borrowing availability to $30.0 million with amounts available for borrowing determined by a borrowing base. On October 25, 2017, the Company entered into another amendment to the Credit Agreement which extended its maturity to April 30, 2019. The 2017 amendment also modified the borrowing base to be determined based upon certain of the Company’s assets which include (i) 80% of certain accounts receivable plus (ii) 50% of certain notes receivable (such result not to exceed $10 million) plus (iii) 25% of certain inventories (such result not to exceed $20 million) and requires the Company to maintain unencumbered liquid assets of $10 million. The 2017 amendment also removed a requirement that the Company maintain a financial ratio that compares certain of the Company’s assets to certain of its liabilities and imposed a new financial covenant that the Company maintain a minimum amount of certain liquid assets. As of December 31, 2017, the Company’s borrowing base was $26.6 million. As of December 31, 2017, the amount available for borrowing was $26.3 million after consideration of $0.3 million of outstanding letters of credit. The Company’s domestic subsidiaries have guaranteed the obligations of the Company under the Credit Agreement and such subsidiaries have secured their obligations under such guarantees by the pledge of substantially all of the assets of such subsidiaries, except real property assets. The Company is required to make monthly interest payments on borrowed funds. The Credit Agreement limits the incurrence of additional indebtedness, restricts the Company and its subsidiaries’ ability to pay cash dividends and contains other covenants customary in agreements of this type. The interest rate for borrowings under the Credit Agreement is based on the Wall Street Journal prime rate, which was 4.50% at December 31, 2017. At December 31, 2017, the Company was in compliance with all covenants under the Credit Agreement.