CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
CURRENT ASSETS:
Cash and cash equivalents	$ 199,419	$ 205,150
Billed accounts receivable, less allowance for credit losses of $13,513 and $11,926, respectively	1,708,507	1,318,926
Unbilled accounts receivable, less allowance for credit losses of $1,055 and $850, respectively	81,184	72,774
Other receivables, less allowance for credit losses of $519 and $522, respectively	155,606	166,319
Inventories	63,778	65,538
Prepaid expenses and other	45,486	54,309
Costs and estimated earnings in excess of billings, less allowance for credit losses of $227 and $79, respectively	69,391	28,084
Total current assets	2,323,371	1,911,100
PROPERTY AND EQUIPMENT, NET	240,319	208,568
LEASE RIGHT-OF-USE ASSET	226,721	205,712
GOODWILL	874,947	666,834
IDENTIFIABLE INTANGIBLE ASSETS, NET	480,880	280,397
DEFERRED TAX ASSETS	50,112	17,723
OTHER NONCURRENT ASSETS	17,634	15,245
Total assets	4,213,984	3,305,579
CURRENT LIABILITIES:
Current maturities of long-term debt	17,686	4,867
Accounts payable	590,529	419,962
Accrued compensation and benefits	209,390	169,136
Billings in excess of costs and estimated earnings and deferred revenue	1,149,896	909,538
Accrued self-insurance	31,881	27,774
Other current liabilities	335,566	189,928
Total current liabilities	2,334,948	1,721,205
LONG-TERM DEBT	73,377	39,345
LEASE LIABILITIES	208,710	188,136
DEFERRED TAX LIABILITIES	1,120	1,120
OTHER LONG-TERM LIABILITIES	113,535	77,944
Total liabilities	2,731,690	2,027,750
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY:
Preferred stock, $.01 par, 5,000,000 shares authorized, none issued and outstanding
Common stock, $.01 par, 102,969,912 shares authorized, 41,123,365 and 41,123,365 shares issued, respectively	411	411
Treasury stock, at cost, 5,431,971 and 5,438,625 shares, respectively	(225,573)	(209,807)
Additional paid-in capital	349,099	339,562
Retained earnings	1,358,357	1,147,663
Total stockholders' equity	1,482,294	1,277,829
Total liabilities and stockholders' equity	$ 4,213,984	$ 3,305,579