CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
CURRENT ASSETS:
Cash and cash equivalents	$ 205,150	$ 57,214
Billed accounts receivable, less allowance for credit losses of $11,926 and $10,640, respectively	1,318,926	1,024,082
Unbilled accounts receivable, less allowance for credit losses of $850 and $1,011, respectively	72,774	77,030
Other receivables, less allowance for credit losses of $522 and $510, respectively	166,319	38,369
Inventories	65,538	35,309
Prepaid expenses and other	54,309	48,456
Costs and estimated earnings in excess of billings, less allowance for credit losses of $79 and $80, respectively	28,084	27,211
Total current assets	1,911,100	1,307,671
PROPERTY AND EQUIPMENT, NET	208,568	143,949
LEASE RIGHT-OF-USE ASSET	205,712	130,666
GOODWILL	666,834	611,789
IDENTIFIABLE INTANGIBLE ASSETS, NET	280,397	273,901
DEFERRED TAX ASSETS	17,723	115,665
OTHER NONCURRENT ASSETS	15,245	13,837
Total assets	3,305,579	2,597,478
CURRENT LIABILITIES:
Current maturities of long-term debt	4,867	9,000
Accounts payable	419,962	337,385
Accrued compensation and benefits	169,136	127,765
Billings in excess of costs and estimated earnings and deferred revenue	909,538	548,293
Accrued self-insurance	27,774	27,644
Other current liabilities	189,928	120,715
Total current liabilities	1,721,205	1,170,802
LONG-TERM DEBT	39,345	247,245
LEASE LIABILITIES	188,136	111,744
DEFERRED TAX LIABILITIES	1,120
OTHER LONG-TERM LIABILITIES	77,944	67,764
Total liabilities	2,027,750	1,597,555
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, 5,438,625 and 5,362,224 shares, respectively	(209,807)	(187,212)
Additional paid-in capital	339,562	332,080
Retained earnings	1,147,663	854,644
Total stockholders' equity	1,277,829	999,923
Total liabilities and stockholders' equity	$ 3,305,579	$ 2,597,478