Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Mar. 27, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net income	$ 58,488	$ 33,971
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	36,579	34,830
Stock-based compensation expense	19,004	14,836
Provision (benefit) for deferred income taxes	1,174	(1,054)
Gain on sale of investment	(3,810)	0
Other non-cash items	2,402	2,715
Changes in operating assets and liabilities, net of effects of businesses acquired:
Accounts receivable, unbilled receivable, and cost in excess of billings	(34,254)	(22,081)
Inventory	(13,525)	(13,770)
Prepaid income taxes	(1,046)	3,761
Prepaid expenses and other current assets	(508)	724
Other non-current assets	(165)	137
Accounts payable, accrued expenses, and accrued compensation	17,968	15,610
Deferred revenues and customer advances	2,446	(2,065)
Income taxes payable	(2,485)	4,795
Other non-current liabilities	3,174	587
Net cash provided by operating activities	86,458	71,548
Cash flows from investing activities:
Acquisition of business, net of cash acquired	(96,502)	(81,529)
Purchases of property and equipment	(31,788)	(17,862)
Proceeds from sale of investment	4,310	0
Net cash used in investing activities	(123,980)	(99,391)
Cash flows from financing activities:
Proceeds from employee stock plans	2,396	1,677
Proceeds from issuance of debt	200,000	81,500
Purchase and retirement of common stock	(15,683)	(7,434)
Termination of interest rate swap	0	(1,851)
Net cash provided by financing activities	186,713	73,892
Effect of exchange rate changes on cash and cash equivalents	23	(55)
Net increase in cash and cash equivalents	149,214	45,994
Cash and cash equivalents at beginning of period	257,932	66,521
Cash and cash equivalents at end of period	407,146	112,515
Cash paid during the period for:
Interest	0	8,163
Income taxes	$ 10,457	$ 5,179