Note 8 - Segment Information (Detail) - Schedule of Segment Reporting, by Segment (USD $)	3 Months Ended		9 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Net sales	$ 2,350,020	$ 3,673,235	$ 5,922,258	$ 11,337,800
Cost of Sales	1,896,652	2,227,856	4,582,773	6,547,563
Gross Margin	453,368	1,445,379	1,339,485	4,790,237
Engineering, research, and development	481,055	633,136	1,608,459	2,160,107
Selling, general and administrative	587,146	724,636	1,927,380	2,191,332
Amortization of debt discount	37,948	13,386	82,349	40,177
Amortization of debt expense	68,384	27,081	152,175	81,241
Financing costs	21,441	0	47,918	0
Change in fair value of common stock warrants	(19,710)	(130,433)	(268,767)	(66,738)
Proceeds from life insurance	0	0	0	(300,029)
Interest (income) expense, net	126,069	102,431	349,556	301,347
Total expenses	1,302,333	1,370,237	3,899,070	4,407,437
Income (loss) before income taxes	(848,965)	75,142	(2,559,585)	382,800
Avionics Gov't [Member]
Net sales	1,828,941	3,163,220	4,226,451	9,470,103
Cost of Sales	1,480,584	1,841,826	3,051,873	5,342,873
Gross Margin	348,357	1,321,394	1,174,578	4,127,230
Engineering, research, and development	0	0	0	0
Selling, general and administrative	0	0	0	0
Amortization of debt discount	0	0	0	0
Amortization of debt expense	0	0	0	0
Financing costs	0	0	0	0
Change in fair value of common stock warrants	0	0	0	0
Proceeds from life insurance			0	0
Interest (income) expense, net	0	0	0	0
Total expenses	0	0	0	0
Income (loss) before income taxes	0	0	0	0
Avionics Comm'l. [Member]
Net sales	521,079	510,015	1,695,807	1,867,697
Cost of Sales	416,068	386,030	1,530,900	1,204,690
Gross Margin	105,011	123,985	164,907	663,007
Engineering, research, and development	0	0	0	0
Selling, general and administrative	0	0	0	0
Amortization of debt discount	0	0	0	0
Amortization of debt expense	0	0	0	0
Financing costs	0	0	0	0
Change in fair value of common stock warrants	0	0	0	0
Proceeds from life insurance			0	0
Interest (income) expense, net	0	0	0	0
Total expenses	0	0	0	0
Income (loss) before income taxes	0	0	0	0
Avionics Total [Member]
Net sales	2,350,020	3,673,235	5,922,258	11,337,800
Cost of Sales	1,896,652	2,227,856	4,582,773	6,547,563
Gross Margin	453,368	1,445,379	1,339,485	4,790,237
Engineering, research, and development	481,055	633,136	1,608,459	2,160,107
Selling, general and administrative	264,627	358,388	891,764	1,046,231
Amortization of debt discount	0	0	0	0
Amortization of debt expense	0	0	0	0
Financing costs	0	0	0	0
Change in fair value of common stock warrants	0	0	0	0
Proceeds from life insurance			0	0
Interest (income) expense, net	0	0	0	0
Total expenses	745,682	991,524	2,500,223	3,206,338
Income (loss) before income taxes	(292,314)	453,855	(1,160,738)	1,583,899
Corporate [Member]
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	322,519	366,248	1,035,616	1,145,101
Amortization of debt discount	37,948	13,386	82,349	40,177
Amortization of debt expense	68,384	27,081	152,175	81,241
Financing costs	21,441	0	47,918	0
Change in fair value of common stock warrants	(19,710)	(130,433)	(268,767)	(66,738)
Proceeds from life insurance			0	(300,029)
Interest (income) expense, net	126,069	102,431	349,556	301,347
Total expenses	556,651	378,713	1,398,847	1,201,099
Income (loss) before income taxes	$ (556,651)	$ (378,713)	$ (1,398,847)	$ (1,201,099)