Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Operating activities:
Net loss	$ (7,628)	$ (21,857)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	9,287	9,702
Goodwill and other intangible asset impairment	0	38,515
Stock-based compensation expense	4,199	5,813
Operating lease impairments due to restructuring	242	0
Deferred income tax	(760)	(2,934)
Gain on sale of property, plant and equipment	(1,186)	(285)
Provision for uncollectible accounts	(41)	1,193
Other	200	(213)
Changes in operating assets and liabilities increasing (decreasing) cash:
Accounts receivable	9,644	18,173
Costs and estimated earnings in excess of billings on uncompleted contracts	18,150	38,860
Inventories	(304)	832
Other assets and liabilities	(6,095)	1,547
Accounts payable	(21,788)	(38,182)
Billings on uncompleted contracts in excess of costs and estimated earnings	(1,645)	4,936
Accrued expenses	3,549	(17,475)
Net cash provided by operating activities	5,824	38,625
Investing activities:
Capital expenditures	(3,068)	(14,492)
Proceeds from asset sales	1,634	377
Net cash used by investing activities	(1,434)	(14,115)
Financing activities:
Advances under senior secured revolving credit facility	1,125	17,395
Repayments of advances under senior secured revolving credit facility	(10,913)	(8,126)
Payments of debt amendment fees	(663)	0
Open market purchase of treasury shares	0	(9,913)
Proceeds from issuance of common stock under employee stock purchase plan	155	157
Repurchase of common stock for payment of statutory taxes due on equity-based compensation	(1,549)	(3,491)
Net cash used by financing activities	(11,845)	(3,978)
Effect of exchange rate changes on cash and cash equivalents	900	248
Increase (decrease) in cash and cash equivalents	(6,555)	20,780
Cash and cash equivalents, beginning of period	100,036	89,715
Cash and cash equivalents, end of period	93,481	110,495
Supplemental disclosure of cash flow information:
Income taxes	197	4,751
Interest paid	1,039	947
Non-cash investing and financing activities:
Purchases of property, plant and equipment on account	$ 11	$ 682