Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net income	$ 9,023	$ 7,896
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	15,176	6,559
Stock-based compensation expense	7,725	5,094
Benefit for deferred income taxes	(1,002)	(894)
Impairment of goodwill and long-lived assets	0	231
Non-cash interest expense	935	0
Other non-cash items	(341)	(384)
Changes in operating assets and liabilities, net of effects of businesses acquired:
Accounts receivable, unbilled receivable, and cost in excess of billings	1,189	(6,254)
Inventory	(3,882)	(4,677)
Prepaid income taxes	(1,623)	867
Prepaid expenses and other current assets	376	3,315
Other non-current assets	(97)	(860)
Accounts payable and accrued expenses	(1,903)	5,902
Deferred revenues and customer advances	(1,310)	2,034
Income taxes payable	305	47
Other non-current liabilities	(50)	(39)
Net cash provided by operating activities	24,521	18,837
Cash flows from investing activities:
Acquisition of business, net of cash acquired	38,764	9,764
Purchases of property and equipment	(13,753)	(3,156)
Increase in other investing activities	(111)	(185)
Net cash used in investing activities	(52,628)	(13,105)
Cash flows from financing activities:
Proceeds from employee stock plans	2,733	2,297
Payments for retirement of common stock	(7,560)	(4,124)
Payments of capital lease obligations	(2,500)	0
Net cash used in financing activities	(7,327)	(1,827)
Effect of exchange rate changes on cash and cash equivalents	(72)	63
Net (decrease) increase in cash and cash equivalents	(35,506)	3,968
Cash and cash equivalents at beginning of period	81,691	77,586
Cash and cash equivalents at end of period	46,185	81,554
Cash paid during the period for:
Interest	2,785	7
Income taxes	2,731	1,759
Supplemental disclosures-non-cash activities:
Non-cash Investing Activity	$ 1,816	$ 0