Income Taxes (Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Income Taxes Unrecognized Tax Benefits Details
Balance at beginning of year	$ 2,420	$ 2,165	$ 3,024
Gross increases - tax position in prior period	82	27	0
Gross decreases - tax position in prior period	0	0	(1,081)
Gross increases - tax positions related to the current year	379	228	222
Balance at end of year	$ 2,881	$ 2,420	$ 2,165