Statement of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Statement of Income and Comprehensive Income [Abstract]
Net Income	$ 3,575	$ 1,979
Foreign currency translation adjustments	(280)	1,356
Changes in unrealized losses, net of tax benefits of $(154) and $(152)	(288)	(285)
Reclassification adjustment for net gains realized in net income, net of benefits of $(11) and $(31)	(19)	(58)
Net change in market value of investments	(307)	(343)
Total comprehensive income	$ 2,988	$ 2,992