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Note 5 - Costs and Estimated Earnings and Billings on Uncompleted Contracts (Tables) | 12 Months Ended
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Dec. 31, 2014
Contractors [Abstract] |
Schedule of Excess Billings Over Earnings [Table Text Block] |
|  | As of December 31, |
|  | 2014 |  |  | 2013 |
Costs incurred and estimated earnings on uncompleted contracts |  | $ | 1,566,831 |  |  | $ | 1,334,322 |
Billings on uncompleted contracts |  |  | (1,559,077 | ) |  |  | (1,354,214 | )
Excess of costs incurred and estimated earnings over billings (excess of billings over costs incurred and estimated earnings) on uncompleted contracts |  | $ | 7,754 |  |  | $ | (19,892 | )
Schedule of Net Amount of Costs And Earnings on Uncompleted Contracts [Table Text Block] |
|  | As of December 31, |
|  | 2014 |  |  | 2013 |
Costs and estimated earnings in excess of billings on uncompleted contracts |  | $ | 33,403 |  |  | $ | 11,684 |
Billings in excess of costs and estimated earnings on uncompleted contracts |  |  | (25,649 | ) |  |  | (31,576 | )
Net amount of costs and estimated earnings on uncompleted contracts above (below) billings |  | $ | 7,754 |  |  | $ | (19,892 | )

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