Long-Term Debt	3 Months Ended
Dec. 31, 2016
Debt Disclosure [Abstract]
Long-Term Debt	7. Long-Term Debt The Company had no debt outstanding at December 31, 2016 and September 30, 2016. 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. Under the amendments to the Credit Agreement, the borrowing base is determined based upon certain of the Company’s and its U.S. subsidiaries’ 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 (excluding work-in-process inventories). As of December 31, 2016, the Company’s borrowing base was $32.2 million resulting in borrowing availability of $30.0 million less $0.4 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 Credit Agreement expires on May 4, 2018 and all borrowed funds are due and payable at that time. The Company is required to make monthly interest payments on borrowed funds. The Credit Agreement as amended limits the incurrence of additional indebtedness, requires the maintenance of a single financial ratio that compares certain of the Company’s assets to certain of its liabilities, 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 as amended is based on the Wall Street Journal prime rate, which was 3.75% at December 31, 2016. At December 31, 2016, the Company was in compliance with all covenants under the Credit Agreement.

7. Long-Term Debt

The Company had no debt outstanding at December 31, 2016 and September 30, 2016.

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. Under the amendments to the Credit Agreement, the borrowing base is determined based upon certain of the Company’s and its U.S. subsidiaries’ 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 (excluding work-in-process inventories). As of December 31, 2016, the Company’s borrowing base was $32.2 million resulting in borrowing availability of $30.0 million less $0.4 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 Credit Agreement expires on May 4, 2018 and all borrowed funds are due and payable at that time. The Company is required to make monthly interest payments on borrowed funds. The Credit Agreement as amended limits the incurrence of additional indebtedness, requires the maintenance of a single financial ratio that compares certain of the Company’s assets to certain of its liabilities, 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 as amended is based on the Wall Street Journal prime rate, which was 3.75% at December 31, 2016. At December 31, 2016, the Company was in compliance with all covenants under the Credit Agreement.