Note 7 - Segment Information (Details) - Schedule of Segment Reporting Information, by Segment - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Information [Line Items]
Net sales	$ 6,818,390	$ 3,587,674	$ 12,664,309	$ 6,716,750
Cost of sales	4,574,924	2,718,330	8,605,548	4,727,189
Gross margin	2,243,466	869,344	4,058,761	1,989,561
Engineering, research, and development	443,656	497,726	935,788	981,622
Selling, general and administrative	883,876	660,034	1,749,564	1,539,227
Amortization of debt discount	0	30,061	0	60,935
Amortization of deferred financing costs	1,358	27,080	2,715	54,160
Change in fair value of common stock warrants	518,588	(27,801)	450,828	106,080
Interest (income) expense, net	25,835	57,387	55,469	119,867
Total expenses	1,873,313	1,244,487	3,194,364	2,861,891
Income (loss) before income taxes	370,153	(375,143)	864,397	(872,330)
Avionics Government [Member]
Segment Reporting Information [Line Items]
Net sales	6,328,752	3,026,728	11,590,071	5,547,451
Cost of sales	4,235,118	2,270,257	7,796,712	3,784,672
Gross margin	2,093,634	756,471	3,793,359	1,762,779
Avionics Commercial [Member]
Segment Reporting Information [Line Items]
Net sales	489,638	560,946	1,074,238	1,169,299
Cost of sales	339,806	448,073	808,836	942,517
Gross margin	149,832	112,873	265,402	226,782
Avionics Total [Member]
Segment Reporting Information [Line Items]
Net sales	6,818,390	3,587,674	12,664,309	6,716,750
Cost of sales	4,574,924	2,718,330	8,605,548	4,727,189
Gross margin	2,243,466	869,344	4,058,761	1,989,561
Engineering, research, and development	443,656	497,726	935,788	981,622
Selling, general and administrative	344,951	283,434	705,580	575,717
Amortization of debt discount		0		0
Amortization of deferred financing costs	0	0	0	0
Change in fair value of common stock warrants	0	0	0	0
Interest (income) expense, net	0	0	0	0
Total expenses	788,607	781,160	1,641,368	1,557,339
Income (loss) before income taxes	1,454,859	88,184	2,417,393	432,222
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	538,925	376,600	1,043,984	963,510
Amortization of debt discount		30,061		60,935
Amortization of deferred financing costs	1,358	27,080	2,715	54,160
Change in fair value of common stock warrants	518,588	(27,801)	450,828	106,080
Interest (income) expense, net	25,835	57,387	55,469	119,867
Total expenses	1,084,706	463,327	1,552,996	1,304,552
Income (loss) before income taxes	$ (1,084,706)	$ (463,327)	$ (1,552,996)	$ (1,304,552)