Business Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Jun. 30, 2012	Jun. 30, 2011
Revenue:
Products	$ 24,118	$ 27,954
Support, maintenance and subscription services	18,436	17,525
Professional services	9,092	7,112
Elimination of intersegment sales	(255)	(179)
Revenue from external customers	51,646	52,591
Gross profit	20,378	18,088
Gross profit margin	39.50%	34.40%
Operating income (loss)	(1,550)	(8,362)
Interest expense, net	147	305
Other income, net	143	(37)
Income (loss) from continuing operations before income taxes	(1,840)	(8,630)
Other Charges:
Depreciation and amortization	1,580	1,943
Asset impairments and related charges	208
Restructuring and related charges	1,125	2,346
HSG [Member]
Revenue:
Products	6,555	4,546
Support, maintenance and subscription services	12,393	11,638
Professional services	3,441	3,351
Elimination of intersegment sales	(31)
Revenue from external customers	22,358	19,534
Gross profit	14,665	11,997
Gross profit margin	65.60%	61.40%
Operating income (loss)	3,044	(978)
Interest expense, net
Other income, net
Income (loss) from continuing operations before income taxes	3,044	(978)
Other Charges:
Depreciation and amortization	664	589
Asset impairments and related charges	208
Restructuring and related charges	593	187
RSG [Member]
Revenue:
Products	17,563	23,408
Support, maintenance and subscription services	6,267	6,067
Professional services	5,682	3,761
Elimination of intersegment sales	(224)	(179)
Revenue from external customers	29,288	33,057
Gross profit	5,713	6,091
Gross profit margin	19.50%	18.40%
Operating income (loss)	1,718	1,809
Interest expense, net
Other income, net
Income (loss) from continuing operations before income taxes	1,718	1,809
Other Charges:
Depreciation and amortization	140	150
Asset impairments and related charges
Restructuring and related charges		134
Corporate/Other [Member]
Revenue:
Products
Support, maintenance and subscription services
Professional services
Elimination of intersegment sales
Revenue from external customers
Gross profit
Gross profit margin
Operating income (loss)	(6,312)	(9,193)
Interest expense, net	147	305
Other income, net	143	(37)
Income (loss) from continuing operations before income taxes	(6,602)	(9,461)
Other Charges:
Depreciation and amortization	776	1,204
Asset impairments and related charges
Restructuring and related charges	$ 532	$ 2,025

Gross margin in percentage.

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Support maintenance and subscription revenue.

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- Definition

The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 45, 46, 47

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The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.

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- Definition

The net amount of operating interest income (expense).

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The net result for the period of deducting operating expenses from operating revenues.

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The net amount of other operating income and expenses, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operations.

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Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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Amount of revenue from external customers for the reportable segment. Such disclosure is presented if the amount is: (a) included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

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Amount of revenue from transactions with other operating segments of the same entity.

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Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

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Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts.

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