Effective Income Tax Rate Reconciliation (Table Text Block)

12 Months Ended

Mar. 31, 2013

Table Text Block [Abstract]

Schedule of Effective Income Tax Rate Reconciliation

The difference between the tax provision at the statutory federal income tax rate and the tax provision attributable to income before taxes was as follows:

	Years Ended March 31,
	2013	2012	2011
	(In percentages)
Statutory federal income tax rate	35.00%	35.00%	35.00%
Increase (reduction) in rate resulting from:
State taxes, net of federal benefit	2.08%	2.70%	3.24%
Foreign rate differential	(0.45)%	(0.55)%	(0.34)%
Federal tax credits	(0.51)%	(0.21)%	(0.18)%
Interest on deferred tax	0.00%	0.12%	0.13%
Dividend received deduction	(0.03)%	(0.06)%	(0.08)%
Other	(0.89)%	(0.07)%	(1.22)%
Actual tax expense of operations	35.20%	36.93%	36.55%