CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
CURRENT ASSETS:
Cash and cash equivalents	$ 69,129	$ 58,776
Billed accounts receivable, less allowance for credit losses of $9,996 and $8,808, respectively	942,208	773,716
Unbilled accounts receivable, less allowance for credit losses of $751 and $715, respectively	79,767	61,881
Other receivables, less allowance for credit losses of $498 and $503, respectively	71,408	57,491
Inventories	31,246	21,853
Prepaid expenses and other	28,836	23,704
Costs and estimated earnings in excess of billings, less allowance for credit losses of $53 and $84, respectively	15,629	29,900
Total current assets	1,238,223	1,027,321
PROPERTY AND EQUIPMENT, NET	132,646	128,554
LEASE RIGHT-OF-USE ASSET	132,681	124,756
GOODWILL	611,000	592,114
IDENTIFIABLE INTANGIBLE ASSETS, NET	296,538	304,781
DEFERRED TAX ASSETS	16,594	22,905
OTHER NONCURRENT ASSETS	11,940	8,683
Total assets	2,439,622	2,209,114
CURRENT LIABILITIES:
Current maturities of long-term debt	2,448	2,788
Accounts payable	293,964	254,788
Accrued compensation and benefits	137,913	129,971
Billings in excess of costs and estimated earnings	386,258	307,380
Accrued self-insurance	20,967	22,227
Other current liabilities	126,630	119,400
Total current liabilities	968,180	836,554
LONG-TERM DEBT, NET	403,192	385,242
LEASE LIABILITIES	113,650	107,701
DEFERRED TAX LIABILITIES	1,745	1,745
OTHER LONG-TERM LIABILITIES	56,010	72,206
Total liabilities	1,542,777	1,403,448
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, 5,342,665 and 5,032,311 shares, respectively	(183,024)	(150,580)
Additional paid-in capital	331,375	327,061
Retained earnings	748,083	628,774
Total stockholders' equity	896,845	805,666
Total liabilities and stockholders' equity	$ 2,439,622	$ 2,209,114