Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2022	Jun. 30, 2022
Current assets:
Cash and cash equivalents	$ 31,464	$ 52,371
Accounts receivable, less allowances (December 31, 2022—$1,112 and June 30, 2022—$1,320)	182,054	153,879
Costs and estimated earnings in excess of billings on uncompleted contracts	46,588	44,752
Inventories	7,981	9,974
Income taxes receivable	13,546	13,547
Prepaid expenses	8,104	4,024
Other current assets	4,745	8,865
Total current assets	294,482	287,412
Restricted Cash	25,000	25,000
Property, plant and equipment, net	50,684	53,869
Operating lease right-of-use assets	23,938	22,067
Goodwill	29,733	42,135
Other intangible assets, net of accumulated amortization	3,931	4,796
Other assets, non-current	10,350	5,514
Total assets	438,118	440,793
Current liabilities:
Accounts payable	80,561	74,886
Billings on uncompleted contracts in excess of costs and estimated earnings	99,762	65,106
Accrued wages and benefits	12,352	21,526
Accrued insurance	5,818	6,125
Operating lease liabilities	4,534	5,715
Other accrued expenses	5,525	4,427
Total current liabilities	208,552	177,785
Deferred income taxes	27	26
Operating lease liabilities	22,713	19,904
Borrowings under asset-backed credit facility	15,000	15,000
Other liabilities, non-current	374	372
Total liabilities	246,666	213,087
Stockholders' equity:
Common stock—$.01 par value; 60,000,000 shares authorized; 27,888,217 shares issued as of December 31, 2022 and June 30, 2022; 27,027,323 and 26,790,514 shares outstanding as of December 31, 2022 and June 30, 2022, respectively	279	279
Additional paid-in capital	137,989	139,854
Retained earnings	71,939	111,278
Accumulated other comprehensive loss	(8,663)	(8,175)
Stockholders' equity	201,544	243,236
Treasury stock, at cost — 860,894 shares as of December 31, 2022, and 1,097,703 shares as of June 30, 2022	(10,092)	(15,530)
Total stockholders' equity	191,452	227,706
Total liabilities and stockholders’ equity	$ 438,118	$ 440,793