Summary of Significant Accounting Policies (Details) (USD $) In Thousands	3 Months Ended
Jun. 30, 2011	Jun. 30, 2010
Costs and expenses:
Share-based compensation	$ 956	$ 1,065
Amounts capitalized in software development costs		(1)
Amounts charged against earnings, before income tax benefit	956	1,064
Related income tax benefit	(358)	(348)
Decrease in net income	598	716
Cost of revenue [Member]
Costs and expenses:
Share-based compensation	49	68
Research and development costs [Member]
Costs and expenses:
Share-based compensation	33	28
Selling, general and administrative [Member]
Costs and expenses:
Share-based compensation	$ 874	$ 969

Amounts charged against earnings, before income tax benefit.

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Increase or decrease in net income.

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 64
-Subparagraph b

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph g(1)

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14
-Section F

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph g(1)

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- Definition

The total recognized tax benefit related to compensation cost for share-based payment arrangements recognized in income during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph g(1)

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