Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Operating activities:
Net loss	$ (42,457)	$ (7,628)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	7,841	9,287
Stock-based compensation expense	3,735	4,199
Operating lease impairment due to restructuring	0	242
Deferred income tax	5,340	(760)
Gain on sale of property, plant and equipment	(102)	(1,186)
Provision for uncollectible accounts	(35)	(41)
Accelerated amortization of deferred debt amendment fees (Note 5)	1,518	0
Other	45	200
Changes in operating assets and liabilities increasing (decreasing) cash:
Accounts receivable	26,464	9,644
Costs and estimated earnings in excess of billings on uncompleted contracts	(3,729)	18,150
Inventories	1,045	(304)
Other assets and liabilities	(3,784)	(6,095)
Accounts payable	(4,866)	(21,788)
Billings on uncompleted contracts in excess of costs and estimated earnings	31,027	(1,645)
Accrued expenses	(10,657)	3,549
Net cash provided by operating activities	11,385	5,824
Investing activities:
Capital expenditures	(569)	(3,068)
Proceeds from asset sales	108	1,634
Net cash used by investing activities	(461)	(1,434)
Financing activities:
Advances under senior secured revolving credit facility	0	1,125
Repayments of advances under senior secured revolving credit facility	0	(10,913)
Payment of debt amendment fees	(1,010)	(663)
Issuances of common stock	199	0
Proceeds from issuance of common stock under employee stock purchase plan	143	155
Repurchase of common stock for payment of statutory taxes due on equity-based compensation	(853)	(1,549)
Other	(236)	0
Net cash used by financing activities	(1,757)	(11,845)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(405)	900
Increase (decrease) in cash, cash equivalents and restricted cash	8,762	(6,555)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Beginning of Period	83,878	100,036
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	92,640	93,481
Supplemental disclosure of cash flow information:
Income taxes	(341)	197
Interest paid	1,798	1,039
Non-cash investing and financing activities:
Purchases of property, plant and equipment on account	$ 5	$ 11