Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating activities:
Net loss	$ (52,025)	$ (77,356)
Adjustments to reconcile net loss to net cash provided (used) by operating activities:
Depreciation and amortization	10,499	11,557
Goodwill impairment	12,316	18,312
Stock-based compensation expense	5,154	5,823
Deferred income tax	0	5,323
Gain on sale of property, plant and equipment	(21)	(674)
Provision for uncollectible accounts	(63)	52
Accelerated amortization of deferred debt amendment fees	0	1,518
Other	189	103
Changes in operating assets and liabilities increasing (decreasing) cash:
Accounts receivable	(9,484)	10,288
Costs and estimated earnings in excess of billings on uncompleted contracts	(8,646)	(15,619)
Inventories	1,947	435
Other assets and liabilities	10,401	(2,769)
Accounts payable	(9,344)	7,188
Billings on uncompleted contracts in excess of costs and estimated earnings	49,623	20,036
Accrued expenses	(8,143)	(6,734)
Net cash provided (used) by operating activities	2,403	(22,517)
Investing activities:
Capital expenditures	(6,212)	(1,335)
Proceeds from asset sales	110	1,250
Net cash used by investing activities	(6,102)	(85)
Financing activities:
Advances under asset-backed credit facility	10,000	0
Repayments of advances under senior secured revolving credit facility	(10,000)	0
Payment of debt amendment fees	0	(1,054)
Issuances of common stock	0	199
Proceeds from issuance of common stock under employee stock purchase plan	200	212
Repurchase of common stock for payment of statutory taxes due on equity-based compensation	(310)	(853)
Other	0	(354)
Net cash used by financing activities	(110)	(1,850)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(358)	(334)
Net decrease in cash, cash equivalents and restricted cash	(4,167)	(24,786)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Beginning of Period	77,371	83,878
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	73,204	59,092
Supplemental disclosure of cash flow information:
Income taxes	(13,286)	(2,841)
Interest, including payment of debt amendment fees	1,675	2,509
Non-cash investing and financing activities:
Purchases of property, plant and equipment on account	$ 30	$ 99