Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	$ (2,518,000)	$ (877,000)
Other comprehensive (loss) income, net of tax	(355,000)	55,000
Amounts reclassified from accumulated other comprehensive loss, net of tax	0	0
Balance at end of period	(2,873,000)	(822,000)
Unrealized Gain (Loss) on Short-Term Investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	345,000	321,000
Other comprehensive (loss) income, net of tax	(6,000)	10,000
Amounts reclassified from accumulated other comprehensive loss, net of tax	0	0
Balance at end of period	339,000	331,000
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(2,863,000)	(1,198,000)
Other comprehensive (loss) income, net of tax	(349,000)	45,000
Amounts reclassified from accumulated other comprehensive loss, net of tax	0	0
Balance at end of period	$ (3,212,000)	$ (1,153,000)