Accounting For Share-Based Compensation (Stock Appreciation Rights) (Details) (USD $) In Thousands, except Per Share data			6 Months Ended
Sep. 30, 2011	Mar. 31, 2011	Sep. 30, 2011 Grant Date July 14, 2008 [Member]	Sep. 30, 2011 Grant Date August 14, 2008 [Member]	Sep. 30, 2011 Grant Date February 5, 2009 [Member]	Sep. 30, 2011 Grant Date April 6, 2009 [Member]	Sep. 30, 2011 Grant Date March 17, 2010 [Member]	Sep. 30, 2011 Grant Date February 15, 2011 [Member]
SARs outstanding			750,000	250,000	850,000	700,000	500,000	1,000,000
Vested and exercisable			750,000	250,000	850,000	700,000	500,000	333,333
Exercise price			$ 9.56	$ 11.16	$ 5.45	$ 5.17	$ 5.95	$ 6.13
Original vesting period			3 years	4 years	3 years	4 years	4 years	3 years
Expiration date			2013-07-14	2012-06-20	2014-02-05	2014-04-06	2015-03-07	2016-02-15
Fair value			$ 0.72	$ 0.10	$ 2.33	$ 2.55	$ 2.41	$ 2.59
Liability	$ 7,100	$ 6,100	$ 537	$ 26	$ 1,984	$ 1,782	$ 1,206	$ 1,605

The number of outstanding awards on nonstock option plans (for example, phantom stock plan, stock appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares.

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Period Type:	instant

- Definition

The exercise price of the awards.

+ Details

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Period Type:	instant

- Definition

The fair value of the stock appreciation rights as of the reporting date as calculated by applying the disclosed option pricing methodology.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Represents the estimated cash settlement liability of the vested and exercisable stock appreciation rights based on the fair value as of the reporting period.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The original period of time over which the right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, which may be expressed in a variety of ways (for example, in years, month and year).

+ Details

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- Definition

The number of awards that are vested and exercisable as of the balance sheet date.

+ Details

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Period Type:	instant

- Definition

The date when the equity-based award expires as specified in the award agreement, which may be presented in a variety of ways (for example, year, month and year, day, month and year, quarter of a year).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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