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Goodwill and Other Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2011	Mar. 31, 2010	Dec. 31, 2007 Customer Lists [Member] years
Schedule of Goodwill and Other Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Life (years)			8
Goodwill, Impairment Loss	$ 0	$ 0
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	$ 0	$ 0

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Schedule of Goodwill and Other Intangible Assets [Line Items]

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The useful life of all finite-lived intangible assets.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 12, 13, 14

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Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.



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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an indefinite-lived intangible asset, other than goodwill, to fair value.

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