Condensed Consolidated Statements of Comprehensive Loss (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Deferred taxes associated with unrealized gains (losses) on available-for-sale securities which arose during the period	$ 0	$ 15,000	$ 0	$ (30,000)
Deferred taxes associated with recognition of (gains) losses on available-for-sale securities	$ 0	$ (2,000)	$ 0	$ (83,000)