CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jan. 31, 2019	Apr. 30, 2018
Statement of Financial Position [Abstract]
Cash and Cash Equivalents, at Carrying Value	$ 3,310
Current assets:
Cash	3,310	$ 856
Accounts receivable, net	3,919	3,917
Prepaid expenses and other current assets	298	287
Total current assets	7,527	5,060
Restricted cash	0	150
Property and equipment, net	2,578	2,083
Other long term assets	137	116
Goodwill	669	669
Total assets	10,911	8,078
Current liabilities:
Accounts payable	2,116	2,154
Accrued liabilities	641	569
Current portion of capital lease	224	26
Deferred revenue	4,723	4,704
Total current liabilities	7,704	7,453
Deferred rent	733	454
Capital lease, net of current portion	0	17
Other non-current liabilities	151	151
Total liabilities	8,588	8,075
Stockholders’ equity:
Common stock, $.001 par value; 200,000,000 shares authorized; 11,612,700 and 11,277,675 shares issued and 11,612,700 and 11,003,228 shares outstanding as of January 31, 2019 and April 30, 2018, respectively	12	11
Treasury stock, at cost, nil and 269,685 common shares as of January 31, 2019 and April 30, 2018, respectively	0	(1,252)
Additional paid-in capital	72,756	72,070
Accumulated deficit	(70,445)	(70,826)
Total stockholders’ equity	2,323	3
Total liabilities and stockholders’ equity	$ 10,911	$ 8,078