For the Three Months Ended September 30,				For the Six Months Ended September 30,
			2007		2006		2007		2006
Revenue		$	22,866	$	24,083	$	47,203	$	50,984
Cost of sales			14,926		15,499		30,890		34,030
Gross margin			7,940		8,584		16,313		16,954
Selling and administrative			6,278		5,895		12,717		11,906
Income from operations			1,662		2,689		3,596		5,048
Other income (expense):
Interest income			410		341		817		695
Interest expense			(2)		(1)		(4)		(2)
			408		340		813		693
Income before income taxes			2,070		3,029		4,409		5,741
Provision for income taxes			910		1,098		1,946		2,222
Net income		$	1,160	$	1,931	$	2,463	$	3,519
Basic net income per share		$	0.11	$	0.18	$	0.23	$	0.33
Diluted net income per share		$	0.10	$	0.17	$	0.22	$	0.32
Shares used in per share calculations:
Basic			10,759		10,553		10,743		10,617
Diluted			11,260		11,102		11,271		11,129