Statement of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Statement of Income and Comprehensive Income [Abstract]
Net Income	$ 6,622	$ 552	$ 15,944	$ 5,914
Foreign currency translation adjustments	(4,828)	2,151	(12,928)	8,066
Changes in unrealized loss, net of tax benefits of $(151) and $(493) for the three and nine months ended December 31, 2014 and net of tax benefits of $(101) and $(119) for the three and nine months ended December 31, 2013	(281)	(188)	(919)	(223)
Reclassification adjustment for net losses (gains) realized in net income, net of tax expenses of $331 and $320 for the three and nine months ended December 31, 2014 and net of tax expense (benefit) of $0 and $(31) for the three and nine months ended December 31, 2013	614	0	595	(58)
Net change in market value of investments	333	(188)	(324)	(281)
Total comprehensive income (loss)	$ 2,127	$ 2,515	$ 2,692	$ 13,699