Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jan. 31, 2015	Jan. 31, 2014
Cash flows from operating activities:
Net loss	$ (1,146)	$ (1,721)
Reconciliation of net loss to net cash provided by operating activities:
Depreciation	525	740
Amortization of intangible assets	1,135	1,154
Loss on disposal of equipment	2	199
Provision for doubtful accounts	(67)	129
Stock based compensation expense	91	130
Deferred tax liability	134	60
(Gain) loss from change in fair value of common stock warrant liability	(130)	51
Changes in operating assets and liabilities:
Accounts receivable	1,720	1,602
Prepaid expenses and other current assets	175	563
Other assets	33	154
Accounts payable	421	195
Accrued compensation and related expenses	(383)	(1,062)
Other accrued liabilities	263	140
Deferred revenue	(2,123)	(1,137)
Other long term liabilities	(62)	(348)
Net cash provided by operating activities	588	849
Cash flows from investing activities:
Proceeds from sale of property and equipment		4
Proceeds from assets held for sale		400
Purchases of property and equipment	(377)	(253)
Net cash (used in) provided by investing activities	(377)	151
Cash flows from financing activities:
Payment of preferred stock dividends		(66)
Principal payments under debt obligations	(3,007)	(2,253)
Principal payments on capital leases	(94)	(127)
Net cash used in financing activities	(3,101)	(2,446)
Net change in cash	(2,890)	(1,446)
Cash, beginning of period	7,178	5,459
Cash, end of period	4,288	4,013
Supplemental cash flow information:
Cash paid for interest	308	889
Cash (received) paid for income taxes	$ (21)	$ 151