Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	$ (4,350,000)	$ (1,338,000)	$ (2,518,000)	$ (877,000)
Other comprehensive (loss) income, net of tax	(380,000)	(321,000)	(2,212,000)	(782,000)
Amounts reclassified from accumulated other comprehensive loss, net of tax	0	(2,000)	0	(2,000)
Balance at end of period	(4,730,000)	(1,661,000)	(4,730,000)	(1,661,000)
Unrealized Gain (Loss) on Short-Term Investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	286,000	328,000	345,000	321,000
Other comprehensive (loss) income, net of tax	42,000	17,000	(17,000)	24,000
Amounts reclassified from accumulated other comprehensive loss, net of tax	0	(2,000)	0	(2,000)
Balance at end of period	328,000	343,000	328,000	343,000
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(4,636,000)	(1,666,000)	(2,863,000)	(1,198,000)
Other comprehensive (loss) income, net of tax	(422,000)	(338,000)	(2,195,000)	(806,000)
Amounts reclassified from accumulated other comprehensive loss, net of tax	0	0	0	0
Balance at end of period	$ (5,058,000)	$ (2,004,000)	$ (5,058,000)	$ (2,004,000)