Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jan. 31, 2017	Apr. 30, 2016
Current assets:
Cash and cash equivalents	$ 38,287	$ 43,963
Short-term investments	45,207	50,682
Accounts receivable, net of allowance for doubtful accounts of $1,537 and $2,362 as of January 31, 2017 and April 30, 2016, respectively	51,624	39,597
Prepaid expenses and other current assets	9,567	8,415
Total current assets	144,685	142,657
Property, equipment and capitalized internal-use software development costs, net	29,160	31,649
Goodwill	139,155	139,155
Acquired intangible assets, net	8,190	9,607
Other non-current assets	4,003	5,214
Total assets	325,193	328,282
Current liabilities:
Accounts payable	4,775	6,110
Accrued expenses and other current liabilities	18,314	23,167
Revolving line of credit	37,000	0
Deferred revenue	71,163	62,735
Total current liabilities	131,252	92,012
Long-term liabilities:
Revolving line of credit	0	42,000
Deferred revenue less current portion	2,500	2,481
Other liabilities, long-term	6,726	7,255
Total liabilities	140,478	143,748
Commitments and contingencies (Note 9)
Stockholders’ equity:
Common stock – $0.0001 par value; 150,000,000 shares authorized, 83,848,563 shares issued and 83,648,563 shares outstanding as of January 31, 2017; 150,000,000 shares authorized, 82,269,748 shares issued and 82,069,748 shares outstanding at April 30, 2016	8	8
Treasury stock, at cost – 200,000 shares as of January 31, 2017 and April 30, 2016	0	0
Additional paid-in capital	450,418	437,239
Accumulated other comprehensive loss	(1,909)	(878)
Accumulated deficit	(263,802)	(251,835)
Total stockholders’ equity	184,715	184,534
Total liabilities and stockholders’ equity	$ 325,193	$ 328,282