Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2015	Jul. 31, 2014
Operating activities:
Net loss	$ (10,244)	$ (11,565)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization expense	3,644	2,810
Loss on disposal of discontinued operations, net of tax	0	1,537
Stock-based expense	4,049	3,246
Bad debt expense	85	601
Excess tax benefit related to stock-based expense	0	(1)
Amortization of deferred financing costs	59	0
Other non-cash expense	51	169
Changes in operating assets and liabilities:
Accounts receivable	(1,076)	435
Prepaid expenses and other current assets	(48)	(145)
Other non-current assets	(314)	(319)
Accounts payable	(808)	208
Accrued expenses and other current liabilities	(4,162)	(2,388)
Deferred revenue	2,498	2,349
Other liabilities, long-term	4	(349)
Net cash used in operating activities	(6,262)	(3,412)
Investing activities:
Proceeds from sale of discontinued operations	4,501	25,500
Purchases of property, equipment and capitalized internal-use software development costs	(3,043)	(3,280)
Purchases of short-term investments	(15,155)	(38,858)
Proceeds from maturities of short-term investments	18,172	11,655
Net cash provided by (used in) investing activities	4,475	(4,983)
Financing activities:
Proceeds from employee stock compensation plans	1,101	1,156
Excess tax benefit related to stock-based expense	0	1
Net cash provided by financing activities	1,101	1,157
Effect of exchange rate fluctuations on cash and cash equivalents	95	8
Net change in cash and cash equivalents	(591)	(7,230)
Cash and cash equivalents at beginning of period	54,041	31,934
Cash and cash equivalents at end of period	53,450	24,704
Supplemental disclosure of other cash flow information:
Cash paid for income taxes, net of refunds	335	461
Cash paid for interest	542	222
Supplemental disclosure of non-cash investing and financing activities:
Purchase of fixed assets recorded in accounts payable	$ 413	$ 0