Capitalized Software Costs (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Activity related to net capitalized software costs
Balance as of April 1	$ 19,994	$ 15,150
Additions to capitalized software costs	29,455	13,098
Amortization	(9,668)	(8,254)	(7,091)
Balance as of December 31	39,781	19,994	15,150
Estimated amortization of capitalized software costs
2014	10,073
2015	13,294
2016	9,516
2017	6,323
2018 and beyond	575
Total	$ 39,781

Capitalized computer software costs estimated amortization.

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- Definition

Capitalized Computer Software Costs Estimated Amortization In Year Five and After

+ References

No definition available.

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- Definition

Capitalized computer software costs estimated amortization in year four.

+ References

No definition available.

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- Definition

Capitalized computer software costs estimated amortization in year one.

+ References

No definition available.

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- Definition

Capitalized computer software costs estimated amortization in year three.

+ References

No definition available.

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Capitalized computer software costs estimated amortization in year two.

+ References

No definition available.

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- Definition

Additions made to capitalized computer software costs during the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

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For each income statement presented, the amount charged to expense for amortization of capitalized computer software costs.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 86

-Paragraph 11

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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-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 carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.

+ References

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

-Publisher FASB

-Name Implementation Guide (Q and A)

-Number FAS86

-Paragraph 18

-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 985

-SubTopic 20

-Section 50

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 985

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 86

-Paragraph 11

-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.

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