Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating activities:
Net income (loss)	$ (27,352)	$ 15,170
Adjustments to reconcile net income (loss) to net cash provided by operating activities, net of effects from acquisitions and disposals:
Depreciation and amortization	14,388	13,623
Goodwill and other intangible asset impairment	38,515	0
Stock-based compensation expense	8,115	9,045
Operating lease and fixed asset impairments due to restructuring	2,660	0
Deferred income tax	(3,091)	1,562
Gain on disposal of business	0	(427)
Gain on sale of property, plant and equipment	(536)	(810)
Provision for uncollectible accounts	1,292	(105)
Other	(110)	308
Changes in operating assets and liabilities increasing (decreasing) cash, net of effects from acquisitions and disposals:
Accounts receivable	7,945	(71,436)
Costs and estimated earnings in excess of billings on uncompleted contracts	39,224	921
Inventories	279	(3,492)
Other assets and liabilities	5,427	(14,750)
Accounts payable	(35,129)	30,092
Billings on uncompleted contracts in excess of costs and estimated earnings	(5,060)	1,626
Accrued expenses	(15,080)	17,557
Net cash provided (used) by operating activities	31,487	(1,116)
Investing activities:
Capital expenditures	(17,650)	(13,721)
Proceeds from disposal of business	0	3,885
Proceeds from asset sales	1,018	1,059
Net cash used by investing activities	(16,632)	(8,777)
Financing activities:
Advances under senior secured revolving credit facility	18,567	12,430
Repayments of advances under senior secured revolving credit facility	(14,357)	(10,133)
Open market purchase of treasury shares	(17,045)	(5,190)
Issuances of common stock	0	128
Proceeds from issuance of common stock under employee stock purchase plan	243	235
Repurchase of common stock for payment of statutory taxes due on equity-based compensation	(3,517)	(1,685)
Net cash used by financing activities	(16,109)	(4,215)
Effect of exchange rate changes on cash and cash equivalents	(958)	(273)
Decrease in cash and cash equivalents	(2,212)	(14,381)
Cash and cash equivalents, beginning of period	89,715	64,057
Cash and cash equivalents, end of period	87,503	49,676
Supplemental disclosure of cash flow information:
Income taxes	5,841	742
Interest paid	1,535	1,340
Non-cash investing and financing activities:
Purchases of property, plant and equipment on account	$ 414	$ 1,100