Intangible Assets (Details) (USD $) In Thousands	Sep. 30, 2011	Mar. 31, 2011	Sep. 30, 2010	Mar. 31, 2010
Intangible assets, other than capitalized software development costs
Gross carrying amount	$ 30,592	$ 22,962
Accumulated amortization	(8,051)	(6,072)
Net intangible assets	22,541	16,890	18,550	20,145
Customer Relationships [Member]
Intangible assets, other than capitalized software development costs
Gross carrying amount	11,906	10,206
Accumulated amortization	(4,801)	(3,879)
Net intangible assets	7,105	6,327	7,137	7,849
Trade Name [Member]
Intangible assets, other than capitalized software development costs
Gross carrying amount	637	637
Accumulated amortization	(509)	(429)
Net intangible assets	128	208	288	368
Software Technology [Member]
Intangible assets, other than capitalized software development costs
Gross carrying amount	18,049	12,119
Accumulated amortization	(2,741)	(1,764)
Net intangible assets	$ 15,308	$ 10,355	$ 11,125	$ 11,928

Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets having statutory or estimated useful lives. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275

Name:	us-gaap_FiniteLivedIntangibleAssetsGross
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant