Note 4 - Costs and Estimated Earnings on Uncompleted Contracts - Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts (Details) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
US Government [Member]
Costs incurred on uncompleted Contracts	$ 331,229,392	$ 299,871,583
Estimated earnings	62,389,343	56,708,610
Sub-total	393,618,735	356,580,193
Less billings to date	338,242,351	313,441,471
Totals	55,376,384	43,138,722
Commercial [Member]
Costs incurred on uncompleted Contracts	113,516,197	90,272,545
Estimated earnings	47,564,640	39,773,983
Sub-total	161,080,837	130,046,528
Less billings to date	120,033,209	94,324,761
Totals	41,047,628	35,721,767
Costs incurred on uncompleted Contracts	444,745,589	390,144,128
Estimated earnings	109,953,983	96,482,593
Sub-total	554,699,572	486,626,721
Less billings to date	458,275,560	407,766,232
Totals	$ 96,424,012	$ 78,860,489