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Note 8 - Prepaid Maintenance Agreement | 12 Months Ended
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Sep. 30, 2017
Notes to Financial Statements |
Prepaid Maintenance Agreement Disclosure [Text Block] | 8 . PREPAID MAINTENANCE AGREEMENT At March 31, 2011, prepaid expenses included $1,500,000 paid to a third party service provider in connection with the Company’s obligations under a sales contract to a foreign military service to provide repair and maintenance services over an eight year period for products sold thereunder. The total prepaid expense is being amortized on a straight-line basis at an annual rate of $187,500 over the eight -year contract period to correspond with the revenues for these services, and is being recognized as a component of cost of sales. Accordingly, as of September 30, 2017, $187,500 of the total prepayment was classified as a current asset and $93,750 was classified as noncurrent. As of September 30, 2016, $187,500 of the total prepayment was classified as a current asset and $281,250 was classified as noncurrent.

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