Summary of Significant Accounting Policies (Tables)

3 Months Ended

Jun. 30, 2012

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Stock-based compensation expense

The following table shows total share-based compensation expense included in the consolidated statements of income for the three months ended June 30, 2012 and 2011:

	Three Months Ended June 30,
	2012			2011
Costs and expenses:
Cost of revenue	$	76		$	49
Research and development costs	59			33
Selling, general and administrative	829			874
Total share-based compensation	964			956
Income tax benefit	(320		)	(358		)
Decrease in net income	$	644		$	598