CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 3,911	$ 24,899
Accounts receivable, net of allowances of $946 and $1,987, respectively	527,069	521,893
Contract assets, net of allowances of $575 and $610, respectively	450,741	420,616
Current portion of receivable for insurance claims in excess of deductibles	8,215	8,267
Refundable income taxes	1,754	4,034
Prepaid expenses and other current assets	34,497	46,535
Total current assets	1,026,187	1,026,244
Property and equipment, net of accumulated depreciation of $383,009 and $380,465, respectively	272,569	268,978
Operating lease right-of-use assets	38,515	35,012
Goodwill	115,865	116,953
Intangible assets, net of accumulated amortization of $31,564 and $30,534, respectively	81,449	83,516
Receivable for insurance claims in excess of deductibles	33,594	33,739
Investment in joint ventures	9,461	8,707
Other assets	5,850	5,597
Total assets	1,583,490	1,578,746
Current liabilities:
Current portion of long-term debt	6,617	7,053
Current portion of operating lease obligations	9,918	9,237
Current portion of finance lease obligations	1,845	2,039
Accounts payable	321,277	359,363
Contract liabilities	270,964	240,411
Current portion of accrued self-insurance	24,623	28,269
Accrued income taxes	1,185	237
Other current liabilities	95,929	100,593
Total current liabilities	732,358	747,202
Deferred income tax liabilities	47,829	48,230
Long-term debt	31,315	29,188
Accrued self-insurance	51,007	51,796
Operating lease obligations, net of current maturities	28,592	25,775
Finance lease obligations, net of current maturities	184	314
Other liabilities	28,485	25,039
Total liabilities	919,770	927,544
Commitments and contingencies
Shareholders’ equity:
Preferred stock—$0.01 par value per share; 4,000,000 authorized shares; none issued and outstanding at March 31, 2024 and December 31, 2023	0	0
Common stock—$0.01 par value per share; 100,000,000 authorized shares; 16,761,942 and 16,684,492 shares issued and outstanding at March 31, 2024 and December 31, 2023, respectively	167	167
Additional paid-in capital	158,791	162,386
Accumulated other comprehensive loss	(6,352)	(3,880)
Retained earnings	511,114	492,529
Total shareholders’ equity	663,720	651,202
Total liabilities and shareholders’ equity	$ 1,583,490	$ 1,578,746