Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 30, 2016	Apr. 30, 2015
Current assets:
Cash and cash equivalents	$ 43,963	$ 54,041
Short-term investments	50,682	52,730
Accounts receivable, net of allowance for doubtful accounts of $2,362 and $3,992 as of April 30, 2016 and April 30, 2015, respectively	39,597	49,532
Prepaid expenses and other current assets	8,415	12,977
Total current assets	142,657	169,280
Property, equipment and capitalized internal-use software development costs, net	31,649	19,054
Goodwill	139,155	139,155
Acquired intangible assets, net	9,607	11,498
Other non-current assets	5,214	3,974
Total assets	328,282	342,961
Current liabilities:
Accounts payable	6,110	3,539
Accrued expenses and other current liabilities	23,167	27,397
Deferred revenue	62,735	60,400
Total current liabilities	92,012	91,336
Long-term liabilities:
Revolving line of credit	42,000	57,000
Deferred revenue less current portion	2,481	2,530
Other liabilities, long-term	7,255	712
Total liabilities	$ 143,748	$ 151,578
Commitments and contingencies (Note 16)
Stockholders’ equity:
Common stock – $0.0001 par value; 150,000,000 shares authorized, 82,269,748 shares issued and 82,069,748 shares outstanding as of April 30, 2016; 150,000,000 shares authorized, 80,346,488 shares issued and 80,146,488 shares outstanding at April 30, 2015	$ 8	$ 8
Treasury stock, at cost – 200,000 shares as of April 30, 2016 and April 30, 2015	0	0
Additional paid-in capital	437,239	418,509
Accumulated other comprehensive loss	(878)	(638)
Accumulated deficit	(251,835)	(226,496)
Total stockholders’ equity	184,534	191,383
Total liabilities and stockholders’ equity	$ 328,282	$ 342,961