Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jan. 31, 2014	Jan. 31, 2013
Cash flows from operating activities:
Net income (loss)	$ (1,721)	$ 344
Reconciliation of net income (loss) to net cash provided by operating activities:
Depreciation	740	842
Amortization of intangible assets	1,154	1,154
Loss on disposal of equipment	199	71
Sale of intangible trade name		(1,000)
Provision for doubtful accounts	129	(75)
Stock based compensation expense	130	492
Deferred tax liability	60	101
(Gain) loss from change in fair value of common stock warrant liability	51	(303)
Changes in operating assets and liabilities:
Accounts receivable	1,602	1,420
Prepaid expenses and other current assets	563	726
Other assets	154	162
Accounts payable	195	102
Accrued compensation and related expenses	(1,062)	(69)
Other accrued liabilities	140	159
Deferred revenue	(1,137)	(1,907)
Other long term liabilities	(348)	(182)
Net cash provided by operating activities	849	2,037
Cash flows from investing activities:
Proceeds from sale of intangible trade name		1,000
Proceeds from sale of property and equipment	4
Proceeds from assets held for sale	400
Purchases of property and equipment	(253)	(209)
Net cash provided by investing activities	151	791
Cash flows from financing activities:
Payment of preferred stock dividends	(66)	(66)
Principal payments under debt obligations	(2,253)	(2,739)
Principal payments on capital leases	(127)	(298)
Net cash used in financing activities	(2,446)	(3,103)
Effect of exchange rate changes on cash		(41)
Net decrease in cash	(1,446)	(316)
Cash, beginning of year	5,459	4,752
Cash, end of period	4,013	4,436
Supplemental cash flow information:
Cash paid for interest	889	1,004
Cash paid for income taxes	151	209
Supplemental non-cash investing and financing activities:
Accrued preferred stock dividends		$ 236