Condensed Consolidated Balance Sheets Parenthetical (USD $)	Sep. 30, 2011	Mar. 31, 2011
Series preferred stock, with or without par value, 50,000,000 shares authorized:
Preferred stock:
Preferred stock, shares authorized	50,000,000	50,000,000
Series A preferred stock, with no par value, 6,100,000 authorized; 6,100,000 and 5,791,700 shares issued and none and 5,791,700 outstanding as of September 30 and March 31, 2011
Preferred stock:
Preferred stock, shares authorized	6,100,000	6,100,000
Preferred stock, shares issued	6,100,000	5,791,700
Preferred stock, shares outstanding	0	5,791,700
Preferred stock, no par value	0.00	0.00
Series B preferred stock, with no par value, 100,000 shares authorized; none issued and outstanding as of September 30 and March 31, 2011
Preferred stock:
Preferred stock, shares authorized	100,000	100,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Preferred stock, no par value	0.00	0.00
Series common stock, with or without par value, 150,000,000 shares authorized:
Common stock:
Common stock, shares authorized	150,000,000	150,000,000
Series A common stock of $0.25 par value, 10,000,000 shares authorized; none issued and outstanding as of September 30 and March 31, 2011
Common stock:
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares, issued	0	0
Common stock, shares, outstanding	0	0
Common stock, par or stated value per share	0.25	0.25
Common stock of $0.25 par value, 150,000,000 shares authorized; 41,985,700 issued as of September 30 and March 31, 2011
Common stock:
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares, issued	41,985,700	41,985,700
Common stock, shares, outstanding	19,607,788	19,607,788
Common stock, par or stated value per share	0.25	0.25
Cost of common shares in treasury, net (22,377,912 shares as of September 30 and March 31, 2011)
Treasury stock:
Treasury stock, shares	22,377,912	22,377,912
Cost of preferred shares in treasury, net (6,100,000 as of September 30, 2011 and 308,300 as of March 31, 2011)
Treasury stock:
Treasury stock, shares	6,100,000	308,300