Note 5 - Accounts Receivable and Work in Process (Details) - Costs in Excess of Billings and Billings in Excess of Costs - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Costs in Excess of Billings and Billings in Excess of Costs [Abstract] | ||
| Costs incurred on uncompleted contracts | $ 166,889 | $ 1,519,570 |
| Estimated earnings | 39,828 | 290,037 |
| 206,717 | 1,809,607 | |
| Less billings to date | 146,368 | 1,557,268 |
| Total Costs and estimated earnings on contracts in progress | $ 60,349 | $ 252,339 |
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount billed to customers under long-term contracts or programs but not paid. Excludes amounts due that have been withheld because of retainage provisions in a contract. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of receivable reflecting the cost incurred on uncompleted contracts in excess of related billings. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of receivable reflecting the cost incurred on uncompleted contracts in excess of related billings which is expected to be collected within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The increase (decrease) during the reporting period of the amount of revenue for work performed for which billing has not occurred, net of uncollectible accounts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of receivables under long-term contracts that have not been billed and were not billable that are expected to be collected in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. No definition available.
|