Note 7 - Accrued Expenses - Summary of Accrued Expenses (Details) - USD ($)	Mar. 31, 2016		Mar. 31, 2015
Salaries, wages and related items	$ 3,288,169		$ 1,571,347
Profit sharing	1,769,261		1,088,089
Health insurance	353,825		405,826
Warranty reserves	266,455		231,803
Other	1,165,164		232,386
Total	$ 6,842,874	[1]	$ 3,529,451

[1] The Consolidated Balance Sheet as of March 31, 2016 has been restated. See Note 1A.