CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 24,899	$ 51,040
Accounts receivable, net of allowances of $1,987 and $2,073, respectively	521,893	472,543
Contract assets, net of allowances of $610 and $499, respectively	420,616	300,615
Current portion of receivable for insurance claims in excess of deductibles	8,267	9,325
Refundable income taxes	4,034	8,944
Prepaid expenses and other current assets	46,535	47,824
Total current assets	1,026,244	890,291
Property and equipment, net of accumulated depreciation of $380,465 and $351,753, respectively	268,978	233,175
Operating lease right-of-use assets	35,012	30,544
Goodwill	116,953	115,847
Intangible assets, net of accumulated amortization of $30,534 and $25,439, respectively	83,516	87,557
Receivable for insurance claims in excess of deductibles	33,739	34,210
Investment in joint venture	8,707	3,697
Other assets	5,597	3,537
Total assets	1,578,746	1,398,858
Current liabilities
Current portion of long-term debt	7,053	5,074
Current portion of operating lease obligations	9,237	9,711
Current portion of finance lease obligations	2,039	1,127
Accounts payable	359,363	315,323
Contract liabilities	240,411	227,055
Current portion of accrued self-insurance	28,269	28,752
Accrued income taxes	237	0
Other current liabilities	100,593	79,918
Total current liabilities	747,202	666,960
Deferred income tax liabilities	48,230	45,775
Long-term debt	29,188	35,479
Accrued self-insurance	51,796	51,287
Operating lease obligations, net of current maturities	25,775	20,845
Finance lease obligations, net of current maturities	314	2,313
Other liabilities	25,039	15,999
Total liabilities	927,544	838,658
Commitments and contingencies
Shareholders’ equity
Preferred stock – $0.01 par value per share; 4,000,000 authorized shares; none issued and outstanding at December 31, 2023 and December 31, 2022	0	0
Common stock – $0.01 par value per share; 100,000,000 authorized shares; 16,684,492 and 16,563,767 shares issued and outstanding at December 31, 2023 and December 31, 2022, respectively	167	165
Additional paid-in capital	162,386	161,427
Accumulated other comprehensive loss	(3,880)	(6,300)
Retained earnings	492,529	404,908
Total shareholders’ equity	651,202	560,200
Total liabilities and shareholders’ equity	$ 1,578,746	$ 1,398,858