Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Net revenues	$ 75,133	$ 81,326	$ 237,437	$ 255,841
Cost of goods sold	51,104	55,811	161,794	179,156
Gross profit	24,029	25,515	75,643	76,685
Operating expenses:
Research, development and engineering	7,280	6,289	22,767	20,487
Selling, general and administrative	9,158	10,191	29,595	31,668
Amortization of acquired intangible assets	1,329	1,419	4,282	4,545
Total operating expenses	17,767	17,899	56,644	56,700
Operating income	6,262	7,616	18,999	19,985
Other income (expense):
Interest income	54	57	140	153
Interest expense	(432)	(392)	(1,030)	(1,124)
Other income (expense), net	290	108	(1,510)	2,481
Income before income tax provision	6,174	7,389	16,599	21,495
Provision for income tax	(3,888)	(767)	(8,055)	(5,551)
Net income	$ 2,286	$ 6,622	$ 8,544	$ 15,944
Net income per share:
Basic (in dollars per share)	$ 0.07	$ 0.21	$ 0.27	$ 0.51
Diluted (in dollars per share)	0.07	0.21	0.26	0.50
Cash dividends per common share (in dollars per share)	$ 0.04	$ 0.035	$ 0.115	$ 0.10
Weighted average shares used in per share calculation:
Basic (in shares)	31,487	31,585	31,626	31,488
Diluted (in shares)	32,343	32,231	32,483	32,173