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Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Revenues	$ 25,142	$ 22,673
Cost of revenues	10,051	10,002
Gross profit	15,091	12,671
Operating expenses:
Selling	1,890	2,679
General and administrative	7,600	6,857
Research and development	837	1,153
Total operating expenses	10,327	10,689
Operating income	4,764	1,982
Other expense, net	364	679
Earnings before income taxes	4,400	1,303
Income tax expense (benefit)	170	(214)
Net income	$ 4,230	$ 1,517
Earnings per share:
Basic (in dollars per share)	$ 1.11	$ 0.41
Diluted (in dollars per share)	$ 1.06	$ 0.39
Weighted-average common shares outstanding:
Basic (in shares)	3,816	3,736
Diluted (in shares)	4,006	3,923

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