CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Net sales	$ 85,933	$ 79,956	$ 84,942
Cost of sales	54,802	47,143	49,728
Gross profit	31,131	32,813	35,214
Selling, general and administrative expenses	13,880	15,246	15,661
Engineering expense	8,162	9,377	12,531
Operating income	9,089	8,190	7,022
Interest expense	49	227	396
Other expense – net	89	93	109
Income before income taxes	8,951	7,870	6,517
Income tax provision	3,310	3,794	2,741
Net income	$ 5,641	$ 4,076	$ 3,776
Earnings per common share:
Basic net income per share:	$ 0.58	$ 0.43	$ 0.40
Diluted net income per share:	$ 0.58	$ 0.43	$ 0.39
Weighted-average basic shares outstanding	9,643,000	9,511,000	9,473,000
Weighted-average diluted shares outstanding	9,757,000	9,573,000	9,593,000