Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 30, 2017	Apr. 30, 2016
Current assets:
Cash and cash equivalents	$ 52,494	$ 43,963
Short-term investments	38,689	50,682
Accounts receivable, net of allowance for doubtful accounts of $1,260 and $2,362 as of April 30, 2017 and April 30, 2016, respectively	43,713	39,597
Prepaid expenses and other current assets	7,619	8,415
Total current assets	142,515	142,657
Property, equipment and capitalized internal-use software development costs, net	28,358	31,649
Goodwill	139,155	139,155
Acquired intangible assets, net	7,717	9,607
Other non-current assets	4,210	5,214
Total assets	321,955	328,282
Current liabilities:
Accounts payable	4,310	6,110
Accrued expenses and other current liabilities	20,602	23,167
Revolving line of credit	32,000	0
Deferred revenue	69,656	62,735
Total current liabilities	126,568	92,012
Long-term liabilities:
Revolving line of credit	0	42,000
Deferred revenue less current portion	2,540	2,481
Other liabilities, long-term	6,542	7,255
Total liabilities	135,650	143,748
Commitments and contingencies (Note 15)
Stockholders’ equity:
Common stock – $0.0001 par value; 150,000,000 shares authorized, 84,487,847 shares issued and 84,287,847 shares outstanding as of April 30, 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 April 30, 2017 and April 30, 2016	0	0
Additional paid-in capital	455,755	437,239
Accumulated other comprehensive loss	(1,682)	(878)
Accumulated deficit	(267,776)	(251,835)
Total stockholders’ equity	186,305	184,534
Total liabilities and stockholders’ equity	$ 321,955	$ 328,282