Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Operating activities:
Net loss	$ (6,018)	$ (39,339)
Adjustments to reconcile net loss to net cash used by operating activities:
Depreciation and amortization	5,692	7,177
Goodwill impairment	0	12,316
Stock-based compensation expense	3,785	3,747
Loss (gain) on sale of property, plant and equipment (Note 3)	(4,589)	42
Other	125	82
Changes in operating assets and liabilities increasing (decreasing) cash:
Accounts receivable	(19,752)	(28,125)
Costs and estimated earnings in excess of billings on uncompleted contracts	4,462	(1,836)
Inventories	(1,004)	1,993
Other assets and liabilities	(1,763)	(5,170)
Accounts payable	(14,303)	5,253
Billings on uncompleted contracts in excess of costs and estimated earnings	31,837	34,656
Accrued expenses	2,257	(8,381)
Net cash provided (used) by operating activities	729	(17,585)
Investing activities:
Capital expenditures	(859)	(2,843)
Proceeds from asset sales	2,806	31
Net cash provided (used) by investing activities	1,947	(2,812)
Financing activities:
Advances under asset-backed credit facility	10,000	10,000
Repayments of advances under asset-backed credit facility	(20,000)	(10,000)
Proceeds from issuance of common stock under employee stock purchase plan	91	136
Repurchase of common stock for payment of statutory taxes due on equity-based compensation	(456)	(310)
Net cash used by financing activities	(10,365)	(174)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	37	(336)
Net decrease in cash, cash equivalents and restricted cash	(7,652)	(20,907)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Beginning of Period	79,812	77,371
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	72,160	56,464
Supplemental disclosure of cash flow information:
Income taxes	(43)	0
Interest	647	1,056
Non-cash investing and financing activities:
Purchases of property, plant and equipment on account	$ 71	$ 476