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Unbilled Receivables (Details) - USD ($) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2015 | Feb. 23, 2017
Unbilled Receivables |  |  |  |  |  |  |  |  |  |  |  |
Unbilled receivables | $ 1,480,822 |  |  |  | $ 1,597,672 |  |  |  | $ 1,480,822 | $ 1,597,672 |  |
Change in operating income resulting from revised estimates | $ (926,999) | $ (541,189) | $ 2,985,918 | $ (1,595,295) | 546,460 | $ 232,344 | $ 1,973,116 | $ (308,733) | (77,565) | 2,443,187 | $ (3,620,743) |
Contracts accounted for under percentage of completion |  |  |  |  |  |  |  |  |  |  |  |
Unbilled Receivables |  |  |  |  |  |  |  |  |  |  |  |
Change in operating income resulting from revised estimates |  |  |  |  |  |  |  |  | 61,000 | 58,000 | $ (117,000) |
Delta |  |  |  |  |  |  |  |  |  |  |  |
Unbilled Receivables |  |  |  |  |  |  |  |  |  |  |  |
Reserve |  |  |  |  | $ 3,600,000 |  |  |  |  | $ 3,600,000 |  |
Amount paid |  |  |  |  |  |  |  |  |  |  |  | $ 7,750,000
Delta | Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  |  |  |
Unbilled Receivables |  |  |  |  |  |  |  |  |  |  |  |
Reversal of reserve |  |  |  |  |  |  |  |  | 3,600,000 |  |  |
Delta | Other income |  |  |  |  |  |  |  |  |  |  |  |
Unbilled Receivables |  |  |  |  |  |  |  |  |  |  |  |
Reminder of amount paid |  |  |  |  |  |  |  |  | $ 4,100,000 |  |  |

X
- Definition Amount paid towards reversal of reserve and collection of the unbilled receivables. + References No definition available. + Details
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- Definition The remaining amount paid after reversal of reserve. + References No definition available. + Details
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- Definition Amount of reserves created under unbilled receivables. + References No definition available. + Details
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- Definition Amount of reversal of reserves created under unbilled receivables. + References No definition available. + Details
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- Definition Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer. + References No definition available. + Details
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