Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Dec. 27, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net income	$ 34,923	$ 19,862
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	23,928	23,254
Stock-based compensation expense	12,190	9,963
Provision (benefit) for deferred income taxes	593	(1,943)
Other non-cash items	(1,255)	(2,144)
Changes in operating assets and liabilities, net of effects of businesses acquired:
Accounts receivable, unbilled receivable, and cost in excess of billings	(13,512)	(20,845)
Inventory	(5,371)	(9,422)
Prepaid income taxes	(5,356)	2,995
Prepaid expenses and other current assets	(1,137)	340
Other non-current assets	(63)	118
Accounts payable and accrued expenses	(425)	7,215
Deferred revenues and customer advances	6,650	9,480
Income taxes payable	(2,803)	1,872
Other non-current liabilities	3,230	977
Net cash provided by operating activities	56,376	45,330
Cash flows from investing activities:
Acquisition of business, net of cash acquired	(96,502)	(45,029)
Purchases of property and equipment	(20,919)	(10,802)
Net cash used in investing activities	(117,421)	(55,831)
Cash flows from financing activities:
Proceeds from employee stock plans	3	1,677
Purchase and retirement of common stock	(14,937)	(6,932)
Borrowings under credit facilities	0	45,000
Termination of interest rate swap	0	(1,851)
Net cash (used in) provided by financing activities	(14,934)	37,894
Effect of exchange rate changes on cash and cash equivalents	84	(11)
Net (decrease) increase in cash and cash equivalents	(75,895)	27,382
Cash and cash equivalents at beginning of period	257,932	66,521
Cash and cash equivalents at end of period	182,037	93,903
Cash paid during the period for:
Interest	0	5,648
Income taxes	$ 10,454	$ 4,308