CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents	$ 50,788	$ 45,620
Billed accounts receivable, less allowance for doubtful accounts of $6,907 and $5,898, respectively	619,037	481,366
Unbilled accounts receivable	55,542	37,180
Other receivables	37,632	16,361
Inventories	10,053	12,416
Prepaid expenses and other	14,396	6,544
Costs and estimated earnings in excess of billings	2,736	10,213
Total current assets	790,184	609,700
PROPERTY AND EQUIPMENT, NET	109,796	99,618
LEASE RIGHT-OF-USE ASSET	84,073
GOODWILL	332,447	235,182
IDENTIFIABLE INTANGIBLE ASSETS, NET	159,974	95,275
DEFERRED TAX ASSETS	21,923	17,634
OTHER NONCURRENT ASSETS	6,615	5,155
Total assets	1,505,012	1,062,564
CURRENT LIABILITIES:
Current maturities of long-term debt	20,817	3,279
Accounts payable	196,195	176,167
Accrued compensation and benefits	102,891	87,388
Billings in excess of costs and estimated earnings	166,918	130,986
Accrued self-insurance	39,546	36,386
Other current liabilities	81,630	32,852
Total current liabilities	607,997	467,058
LONG-TERM DEBT, NET	205,318	73,639
LEASE LIABILITIES	72,697
DEFERRED TAX LIABILITIES	1,425	1,387
OTHER LONG-TERM LIABILITIES	32,271	22,433
Total liabilities	919,708	564,517
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, 4,465,448 and 4,229,653 shares, respectively	(103,960)	(87,747)
Additional paid-in capital	320,168	316,479
Retained earnings	368,685	268,904
Total stockholders' equity	585,304	498,047
Total liabilities and stockholders' equity	$ 1,505,012	$ 1,062,564