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Stock-Based Compensation Summarized Data for Stock Based Compensation Plans (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense for all stock based compensation plans	$ 2,618	$ 4,609	$ 448
Tax (expense) benefits for stock-based compensation	0	0	(748)
Intrinsic value of stock options exercised	0	22	59
Fair value of stock options vested	$ 1,477	$ 189	$ 908

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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