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Note 3 - Contracts in Progress | 12 Months Ended
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Dec. 31, 2016
Notes to Financial Statements |
Long-term Contracts or Programs Disclosure [Text Block] | Note 3 – Contracts in Progress Costs and estimated earnings in excess of billings on percentage of completion type contracts in progress are summarized as follows:
|  | 2016 |  |  | 2015 |
Costs incurred on contracts in progress |  | $ | 4,678,192 |  |  | $ | 7,695,281 |
Estimated earnings |  |  | 10,733,826 |  |  |  | 7,635,114 |
|  |  | 15,412,018 |  |  |  | 15,330,395 |
Billings to date |  |  | (18,077,839 | ) |  |  | (10,695,377 | )
|  | $ | (2,665,821 | ) |  | $ | 4,635,018 |
|  | 2016 |  |  | 2015 |
Included in accompanying balance sheets |  |  |  |  |  |  |  |
Under the following captions: |  |  |  |  |  |  |  |
Costs and estimated earnings in excess of billings on contracts in progress |  | $ | 2,596,518 |  |  | $ | 4,635,018 |
Billings in excess of costs and estimated earnings on contracts in progress |  | $ | (5,262,339 | ) |  | $ | --- |

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