Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jan. 31, 2015	Apr. 30, 2014
Current assets:
Cash	$ 4,288	$ 7,178
Accounts receivable, net of allowances of $144 and $211, respectively	5,005	6,657
Prepaid expenses	558	617
Other current assets	242	358
Total current assets	10,093	14,810
Property and equipment, net of accumulated depreciation of $5,428 and $4,921, respectively	903	1,053
Goodwill	11,706	11,706
Intangibles, net	4,479	5,614
Other assets	437	470
Total assets	27,618	33,653
Current liabilities:
Accounts payable	729	308
Current portion of long-term debt	808	3,123
Accrued compensation and related expenses	802	1,185
Other accrued liabilities	1,235	971
Deferred revenue	6,846	8,590
Total current liabilities	10,420	14,177
Long-term debt, net of current portion	11,062	11,848
Deferred tax liabilities, net	1,166	1,032
Common stock warrant liability	146	276
Other long-term liabilities	654	1,095
Total liabilities	23,448	28,428
Commitments and contingencies
Stockholders' equity:
Common stock	17	17
Additional paid-in capital	100,243	100,152
Accumulated other comprehensive income	280	280
Accumulated deficit	(96,370)	(95,224)
Total stockholders' equity	4,170	5,225
Total liabilities and stockholders' equity	$ 27,618	$ 33,653