Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Oct. 31, 2013	Oct. 31, 2012
Cash flows from operating activities:
Net income (loss)	$ (843)	$ 409
Reconciliation of net income (loss) to net cash provided by operating activities:
Depreciation	515	555
Amortization of intangible assets	769	769
Loss on disposal of equipment	75
Sale of intangible trade name		(1,000)
Stock based compensation expense	92	330
Gain from change in fair value of common stock warrant liability	(112)	(271)
Changes in operating assets and liabilities:
Accounts receivable	3,010	2,011
Prepaid expenses and other current assets	544	478
Other assets	124	112
Accounts payable	414	(52)
Accrued compensation and related expenses	(1,359)	(433)
Other accrued liabilities	(344)	44
Deferred revenue	(2,421)	(1,674)
Other long term liabilities	(94)	(12)
Net cash provided by operating activities	370	1,266
Cash flows from investing activities:
Proceeds from sale of intangible trade name		1,000
Purchases of property and equipment	(95)	(166)
Proceeds from assets held for sale	400
Net cash provided by investing activities	305	834
Cash flows from financing activities:
Payment of preferred stock dividends	(66)	(66)
Principal payments under debt obligations	(1,947)	(2,500)
Principal payments on capital leases	(86)	(197)
Net cash used in financing activities	(2,099)	(2,763)
Effect of exchange rate changes on cash		(52)
Net decrease in cash	(1,424)	(715)
Cash, beginning of year	5,459	4,752
Cash, end of period	4,035	4,037
Supplemental cash flow information:
Cash paid for interest	613	758
Cash paid for income taxes	117	172
Supplemental non-cash investing and financing activities:
Accrued preferred stock dividends	66	136
Conversion of preferred stock to common stock	$ 2