Statement of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Income and Comprehensive Income [Abstract]
Net Income	$ 5,747	$ 3,383	$ 9,322	$ 5,362
Foreign currency translation adjustments	(7,820)	4,559	(8,100)	5,915
Changes in unrealized gain (loss), net of tax benefits of $(188) and $(342) for the three and six months ended September 30, 2014 and net of tax expense (benefit) of $134 and $(18) for the three and six months ended September 30, 2013	(350)	250	(638)	(35)
Reclassification adjustment for net gains realized in net income, net of tax expense (benefit) of $0 and $(11) for the three and six months ended September 30, 2014 and net of tax expense (benefit) of $0 and $(31) for the three and six months ended September 30, 2013	0	0	(19)	(58)
Net change in market value of investments	(350)	250	(657)	(93)
Total comprehensive income (loss)	$ (2,423)	$ 8,192	$ 565	$ 11,184