Condensed Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Engineering [Member]
Expenses:
Engineering	$ 309,769	$ 329,864	$ 1,058,705	$ 832,517
Contract revenues	1,240,393	1,057,442	5,450,815	3,150,584
Cost of sales	529,303	431,701	2,868,377	1,284,081
Gross margin	711,090	625,741	2,582,438	1,866,503
Engineering	24,890	1,724	34,625	5,021
General and administrative	328,734	213,956	951,331	806,591
Total expenses	638,503	543,820	2,010,036	1,639,108
Income from operations	72,587	81,921	572,402	227,395
Interest income	149	95	336	316
Net income before income taxes	72,736	82,016	572,738	227,711
Income tax expense (benefit)	36,000	(45,419)	274,500	(21,973)
Net income	$ 36,736	$ 127,435	$ 298,238	$ 249,684
Other comprehensive income (loss)
Comprehensive income	$ 36,736	$ 127,435	$ 298,238	$ 249,684
Basic income per share (in dollars per share)			$ 0.01	$ 0.01
Weighted average shares outstanding - basic (in shares)	31,947,753	31,904,786	32,064,778	31,892,694
Dilutive income per share (in dollars per share)			$ 0.01	$ 0.01
Diluted weighted average number of shares outstanding (in shares)	35,548,552	35,509,307	35,665,577	35,488,707