Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Net income	$ 2,286	$ 6,622	$ 8,544	$ 15,944
Foreign currency translation adjustments	(3,027)	(4,828)	534	(12,928)
Changes in market value of investments:
Changes in unrealized loss, net of tax benefits of $(24) and $(226) for the three and nine months ended December 31, 2015, respectively, and net of tax benefits of $(151) and $(493) for the three and nine months ended December 31, 2014, respectively	(35)	(281)	(337)	(919)
Reclassification adjustment for net losses realized in net income, net of tax expenses of $3 and $185 for the three and nine months ended December 31, 2015, respectively and net of tax expenses of $331 and $320 for the three and nine months ended December 31, 2014, respectively	4	614	276	595
Net change in market value of investments	(31)	333	(61)	(324)
Total comprehensive income (loss)	$ (772)	$ 2,127	$ 9,017	$ 2,692