Note 13 - Computation of Earnings per Share (Details Textual) - shares	3 Months Ended		9 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Weighted Average Number Diluted Shares Outstanding Adjustment	856,000	646,000	857,000	685,000
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	2,047,000	2,687,092	1,620,807	2,557,883