Consolidated Statements of Changes in Shareholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Preferred Stock	Common Shares Issued	Treasury Stock	Capital in Excess of Par Value	Accumulated Other Comprehensive Losses	Accumulated Deficit
Balance at Mar. 31, 2010	$ 41,342	$ 3,310	$ 529	$ (24,224)	$ 98,785	$ (82)	$ (36,976)
Balance, shares at Mar. 31, 2010			52,965,797
Unrealized gain on securities	828					828
Comprehensive income:
Net income	15,918						15,921
Comprehensive income	16,749
Balance at Mar. 31, 2011	58,091	3,310	529	(24,224)	98,785	746	(21,055)
Balance, shares at Mar. 31, 2011			52,965,797
Unrealized gain on securities	(828)					(828)
Comprehensive income:
Net income	10,634						10,637
Comprehensive income	9,809
Balance at Mar. 31, 2012	$ 67,900	$ 3,310	$ 529	$ (24,224)	$ 98,785	$ (82)	$ (10,418)
Balance, shares at Mar. 31, 2012			52,965,797