Employee Benefit and Stock Compensation Plans Stock Options (Details) (USD $)	4 Months Ended		12 Months Ended
	Mar. 31, 2012		Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2011
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	7,362	[1]	4,029	[1]	5,362	[1]	10,244	[1]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price	$ 235.00		$ 258.16		$ 255.17		$ 216.75
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	0	[1]	0	[1]	0	[1]
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 0.00		$ 0		$ 0.00
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	0	[1]	0	[1]	0	[1]
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price	$ 0.00		$ 0		$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period	2,882	[1]	1,333	[1]	2,000	[1]
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price	$ 170.08		$ 246.15		$ 180.9
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	6,696	[1]	3,975	[1]	5,229	[1]

[1] Options for all periods presented reflects a 1-for-15 reverse stock split which was effective on October 27, 2011