Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2015	Jan. 31, 2014
Revenues:
Information Governance	$ 3,142us-gaap_TechnologyServicesRevenue	$ 4,779us-gaap_TechnologyServicesRevenue	$ 11,100us-gaap_TechnologyServicesRevenue	$ 14,936us-gaap_TechnologyServicesRevenue
Migration and Development Tools	2,552us-gaap_LicenseAndServicesRevenue	3,109us-gaap_LicenseAndServicesRevenue	7,908us-gaap_LicenseAndServicesRevenue	8,652us-gaap_LicenseAndServicesRevenue
Total revenues	5,694us-gaap_Revenues	7,888us-gaap_Revenues	19,008us-gaap_Revenues	23,588us-gaap_Revenues
Operating expenses:
Direct costs of Information Governance	1,626us-gaap_TechnologyServicesCosts	2,044us-gaap_TechnologyServicesCosts	4,765us-gaap_TechnologyServicesCosts	6,311us-gaap_TechnologyServicesCosts
Direct costs of Migration and Development Tools	452	494	1,481	1,357
Product development	1,160us-gaap_ResearchAndDevelopmentExpense	1,395us-gaap_ResearchAndDevelopmentExpense	3,550us-gaap_ResearchAndDevelopmentExpense	4,683us-gaap_ResearchAndDevelopmentExpense
Selling, general and administrative	2,817	4,233	9,146	11,573
Total operating expenses	6,055us-gaap_OperatingExpenses	8,166us-gaap_OperatingExpenses	18,942us-gaap_OperatingExpenses	23,924us-gaap_OperatingExpenses
(Loss) income from operations	(361)us-gaap_OperatingIncomeLoss	(278)us-gaap_OperatingIncomeLoss	66us-gaap_OperatingIncomeLoss	(336)us-gaap_OperatingIncomeLoss
Other (expense) income
Gain (loss) from change in fair value of common stock warrant liability	69	(163)	130	(51)
Interest expense	(170)us-gaap_InterestExpense	(312)us-gaap_InterestExpense	(656)us-gaap_InterestExpense	(1,039)us-gaap_InterestExpense
Other, net	(159)us-gaap_OtherNonoperatingIncomeExpense	(54)us-gaap_OtherNonoperatingIncomeExpense	(400)us-gaap_OtherNonoperatingIncomeExpense	(51)us-gaap_OtherNonoperatingIncomeExpense
Total other (expense) income	(260)us-gaap_NonoperatingIncomeExpense	(529)us-gaap_NonoperatingIncomeExpense	(926)us-gaap_NonoperatingIncomeExpense	(1,141)us-gaap_NonoperatingIncomeExpense
Loss before income taxes	(621)	(807)	(860)	(1,477)
Provision for income taxes	302us-gaap_IncomeTaxExpenseBenefit	71us-gaap_IncomeTaxExpenseBenefit	286us-gaap_IncomeTaxExpenseBenefit	244us-gaap_IncomeTaxExpenseBenefit
Net Loss	$ (923)us-gaap_NetIncomeLoss	$ (878)us-gaap_NetIncomeLoss	$ (1,146)us-gaap_NetIncomeLoss	$ (1,721)us-gaap_NetIncomeLoss
Loss per share:
Basic	$ (0.06)us-gaap_EarningsPerShareBasic	$ (0.05)us-gaap_EarningsPerShareBasic	$ (0.07)us-gaap_EarningsPerShareBasic	$ (0.11)us-gaap_EarningsPerShareBasic
Diluted	$ (0.06)us-gaap_EarningsPerShareDiluted	$ (0.05)us-gaap_EarningsPerShareDiluted	$ (0.07)us-gaap_EarningsPerShareDiluted	$ (0.11)us-gaap_EarningsPerShareDiluted
Weighted-average shares used in computing loss per share:
Basic	16,384	16,384	16,384	16,022
Diluted	16,384	16,384	16,384	16,022

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