Note 7 - Segment Information (Details) - Schedule of Segment Reporting Information, by Segment - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Net sales	$ 5,970,865	$ 5,030,097	$ 18,635,174	$ 11,746,847
Cost of sales	3,936,108	3,484,310	12,541,656	8,211,499
Gross margin	2,034,757	1,545,787	6,093,518	3,535,348
Engineering, research, and development	541,502	494,721	1,477,290	1,476,343
Selling, general and administrative	767,923	825,261	2,517,487	2,364,488
Amortization of debt discount	0	14,373	0	75,308
Amortization of deferred financing costs	1,357	13,648	4,072	67,808
Loss on extinguishment of debt	0	188,102	0	188,102
Change in fair value of common stock warrants	246,751	(37,330)	697,579	68,750
Interest (income) expense, net	23,687	39,137	79,156	159,004
Total expenses	1,581,220	1,537,912	4,775,584	4,399,803
Income (loss) before income taxes	453,537	7,875	1,317,934	(864,455)
Avionics Government [Member]
Segment Reporting Information [Line Items]
Net sales	5,658,695	4,455,399	17,248,766	10,002,850
Cost of sales	3,709,998	3,015,359	11,506,710	6,800,031
Gross margin	1,948,697	1,440,040	5,742,056	3,202,819
Avionics Commercial [Member]
Segment Reporting Information [Line Items]
Net sales	312,170	574,698	1,386,408	1,743,997
Cost of sales	226,110	468,951	1,034,946	1,411,468
Gross margin	86,060	105,747	351,462	332,529
Avionics Total [Member]
Segment Reporting Information [Line Items]
Net sales	5,970,865	5,030,097	18,635,174	11,746,847
Cost of sales	3,936,108	3,484,310	12,541,656	8,211,499
Gross margin	2,034,757	1,545,787	6,093,518	3,535,348
Engineering, research, and development	541,502	494,721	1,477,290	1,476,343
Selling, general and administrative	203,249	323,862	908,829	899,579
Amortization of debt discount		0		0
Amortization of deferred financing costs	0	0	0	0
Loss on extinguishment of debt		0		0
Change in fair value of common stock warrants	0	0	0	0
Interest (income) expense, net	0	0	0	0
Total expenses	744,751	818,583	2,386,119	2,375,922
Income (loss) before income taxes	1,290,006	727,204	3,707,399	1,159,426
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Net sales	0	0	0	0
Cost of sales	0	0	0	0
Gross margin	0	0	0	0
Engineering, research, and development	0	0	0	0
Selling, general and administrative	564,674	501,399	1,608,658	1,464,909
Amortization of debt discount		14,373		75,308
Amortization of deferred financing costs	1,357	13,648	4,072	67,808
Loss on extinguishment of debt		188,102		188,102
Change in fair value of common stock warrants	246,751	(37,330)	697,579	68,750
Interest (income) expense, net	23,687	39,137	79,156	159,004
Total expenses	836,469	719,329	2,389,465	2,023,881
Income (loss) before income taxes	$ (836,469)	$ (719,329)	$ (2,389,465)	$ (2,023,881)