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Costs and Estimated Earnings on Uncompleted Contracts (Tables) | 6 Months Ended
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Jun. 30, 2013
Costs and Estimated Earnings on Uncompleted Contracts [Abstract] |
Summary of costs and estimated earnings on uncompleted contracts |
|  | 2013 |  |  | 2012 |
Costs incurred on uncompleted contracts |  | $ | 1,236,157 |  |  | $ | 177,529 |
Provision for loss on uncompleted contracts |  |  | (38,604 | ) |  |  | (6,680 | )
Estimated earnings |  |  | (58,232 | ) |  |  | 19,516 |
|  |  | 1,139,321 |  |  |  | 190,365 |
Less: billings to date |  |  | (1,066,689 | ) |  |  | (223,678 | )
|  | $ | 72,632 |  |  | $ | (33,313 | )
Summary of costs and estimated earnings amounts on uncompleted contracts included in balance sheets |
|  | 2013 |  |  | 2012 |
Costs and estimated earnings in excess of billings on uncompleted contracts |  | $ | 135,278 |  |  | $ | 36,476 |
Billings in excess of cost and estimated earnings on uncompleted contracts |  |  | (62,646 | ) |  |  | (69,789 | )
|  | $ | 72,632 |  |  | $ | (33,313 | )

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