Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net income	$ 24,875	$ 19,742	$ 10,369
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	32,269	15,742	13,840
Stock-based compensation expense	15,341	9,574	8,728
Deferred income taxes	(7,841)	(3,061)	(1,038)
Impairment of Long-Lived Assets Held-for-use	0	231	2,283
Excess tax benefit from stock-based compensation	0	0	(943)
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax	0	0	892
Non-cash interest expense	1,810	301	0
Other non-cash items	(626)	(722)	(495)
Changes in operating assets and liabilities, net of effects of businesses acquired:
Accounts receivable, unbilled receivable, and cost in excess of billings	(14,054)	(25,396)	5,935
Inventory	(9,318)	(865)	(345)
Prepaid income taxes	1,978	346	(2,265)
Prepaid expenses and other current assets	(1,270)	2,964	(4,964)
Other non-current assets	372	(778)	565
Accounts payable and accrued expenses	3,520	18,871	(475)
Deferred revenues and customer advances	(1,621)	(194)	1,138
Income taxes payable	9,622	253	(938)
Other non-current liabilities	4,089	(68)	(80)
Net cash provided by operating activities	59,146	36,940	32,207
Cash flows from investing activities:
Acquisition of businesses, net of cash acquired	(77,757)	(309,756)	0
Purchases of property and equipment	(32,844)	(7,885)	(5,984)
Proceeds from Divestiture of Businesses	0	0	885
Other investing activities	(486)	(567)	(499)
Net cash used in investing activities	(111,087)	(318,208)	(5,598)
Cash flows from financing activities:
Proceeds from Issuance of Common Stock	215,725	92,778	0
Proceeds from employee stock plans	4,970	8,097	4,548
Stock Repurchased and Retired During Period, Value	(8,766)	(7,955)	(944)
Excess tax benefit from stock-based compensation	0	0	943
Proceeds from issuance of term debt, net	0	194,900	0
Payments of debt issuance costs	(591)	(2,926)	0
Payments of term debt	(200,000)	0	0
Payments of capital lease obligations	0	0	(642)
Net cash provided by financing activities	11,338	284,894	3,905
Effect of exchange rate changes on cash and cash equivalents	549	479	(215)
Net (decrease) increase in cash and cash equivalents	(40,054)	4,105	30,299
Cash and cash equivalents at beginning of year	81,691	77,586	47,287
Cash and cash equivalents at end of year	41,637	81,691	77,586
Cash paid during the period for:
Interest	5,758	1,041	34
Income taxes	2,834	7,975	7,875
Supplemental disclosures-non-cash activities:
Share-based business combination consideration	$ 0	$ 407	$ 0