Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Oct. 31, 2017	Apr. 30, 2017
Current assets:
Cash and cash equivalents	$ 51,988	$ 52,494
Short-term investments	13,224	38,689
Accounts receivable, net of allowance for doubtful accounts of $1,058 and $1,260 as of October 31, 2017 and April 30, 2017, respectively	41,424	43,713
Prepaid expenses and other current assets	6,261	7,619
Total current assets	112,897	142,515
Property, equipment and capitalized internal-use software development costs, net	28,964	28,358
Goodwill	139,155	139,155
Acquired intangible assets, net	6,772	7,717
Other non-current assets	4,582	4,210
Total assets	292,370	321,955
Current liabilities:
Accounts payable	4,596	4,310
Accrued expenses and other current liabilities	16,408	20,602
Revolving line of credit	0	32,000
Deferred revenue	68,259	69,656
Total current liabilities	89,263	126,568
Long-term liabilities:
Deferred revenue less current portion	1,467	2,540
Other liabilities, long-term	7,169	6,542
Total liabilities	97,899	135,650
Commitments and contingencies (Note 9)
Stockholders’ equity:
Common stock – $0.0001 par value; 150,000,000 shares authorized, 86,252,850 shares issued and 86,052,850 shares outstanding as of October 31, 2017; 150,000,000 shares authorized, 84,487,847 shares issued and 84,287,847 shares outstanding at April 30, 2017	8	8
Treasury stock, at cost – 200,000 shares as of October 31, 2017 and April 30, 2017	0	0
Additional paid-in capital	466,305	455,755
Accumulated other comprehensive loss	(1,369)	(1,682)
Accumulated deficit	(270,473)	(267,776)
Total stockholders’ equity	194,471	186,305
Total liabilities and stockholders’ equity	$ 292,370	$ 321,955

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.