Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Consolidated Statements of Income
Revenue	$ 90,489	$ 76,217
Costs of revenue	57,802	49,594
Gross profit	32,687	26,623
Operating expenses:
Selling, general and administrative expenses	23,758	19,754
Income from operations	8,929	6,869
Other income (expense):
Interest income	838	698
Foreign currency transaction gains	387	441
Other, net	(89)	101
Total other income	1,136	1,240
Income before income tax expense	10,065	8,109
Income tax expense	2,543	1,970
Net income	$ 7,522	$ 6,139
Net income per share of common stock:
Basic (in dollars per share)	$ 0.30	$ 0.25
Diluted (in dollars per share)	$ 0.29	$ 0.24