XML 35 R24.htm IDEA: XBRL DOCUMENT v3.5.0.2
Note 4 - Costs, Estimated Earnings, and Billings on Uncompleted Contracts (Details) - USD ($)
Jun. 30, 2016
Dec. 31, 2015
Costs incurred on contracts in progress $ 2,777,723 $ 7,695,281
Estimated earnings 12,890,347 7,635,114
Total 15,668,070 15,330,395
Billings to date (18,001,359) (10,695,377)
Cost in excess of billing, net (2,333,289) 4,635,018
Included in accompanying balance sheets under the following captions:    
Costs and estimated earnings in excess of billings on contracts in progress 2,859,587 4,635,018
Billings in excess of costs and estimated earnings on contracts in progress (5,192,876)
Cost in excess of billing, net $ (2,333,289) $ 4,635,018