CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands	3 Months Ended
	Jul. 29, 2017 USD ($)
Operating activities
Net income (loss)	$ (5,882)
Loss from discontinued operations, net of tax	1,488
Net income (loss) from continuing operations	(4,394)
Adjustments to reconcile net income (loss) to cash provided by operating activities:
Depreciation and amortization	1,406
Impairment of long-lived assets	9
Provision for doubtful accounts	209
Gains on foreign currency transactions	(106)
Deferred income taxes	(597)
Stock-based compensation	1,326
Amortization of held-to-maturity investments	474
Changes in operating assets and liabilities:
Accounts receivable	43,819
Unbilled receivables and retentions	6,234
Inventories	(10,224)
Income tax receivable	(3,385)
Prepaid expenses and other assets	358
Accounts payable	(5,504)
Other liabilities	(4,306)
Net cash provided by operating activities of continuing operations	25,319
Investing activities
Acquisition of property and equipment	(2,705)
Redemptions of held-to-maturity investments	59,280
Purchases of held-to-maturity investments	(41,806)
Redemptions of available-for-sale investments	450
Net cash used in investing activities from continuing operations	15,219
Financing activities
Principal payments of capital lease obligations	(92)
Tax withholding payment related to net settlement of equity awards	(212)
Exercise of stock options	1,640
Net cash (used in) provided by financing activities from continuing operations	1,336
Discontinued operations
Operating activities of discontinued operations	(4,037)
Investing activities of discontinued operations	(268)
Net cash provided by (used in) discontinued operations	(4,305)
Net increase in cash and cash equivalents	37,569
Cash and cash equivalents at beginning of period	79,904
Cash and cash equivalents at end of period	117,473
Cash (refunds) paid, net during the period for:
Income tax refund	1,803
Income taxes	(1,803)
Non-cash activities
Unrealized gain on investments, net of deferred tax expense of $51 and $4, respectively	2
Reclassification from share-based liability compensation to equity	384
Acquisitions of property and equipment included in accounts payable	$ 644