CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents	$ 40,363	$ 45,620
Billed accounts receivable, less allowance for doubtful accounts of $6,526 and $5,898, respectively	607,061	481,366
Unbilled accounts receivable	49,926	37,180
Other receivables	25,476	16,361
Inventories	12,667	12,416
Prepaid expenses and other	8,788	6,544
Costs and estimated earnings in excess of billings	6,121	10,213
Total current assets	750,402	609,700
PROPERTY AND EQUIPMENT, NET	108,129	99,618
LEASE RIGHT-OF-USE ASSET	84,281
GOODWILL	332,200	235,182
IDENTIFIABLE INTANGIBLE ASSETS, NET	166,736	95,275
DEFERRED TAX ASSETS	20,254	17,634
OTHER NONCURRENT ASSETS	5,458	5,155
Total assets	1,467,460	1,062,564
CURRENT LIABILITIES:
Current maturities of long-term debt	13,847	3,279
Accounts payable	176,624	176,167
Accrued compensation and benefits	100,390	87,388
Billings in excess of costs and estimated earnings	167,097	130,986
Accrued self-insurance	40,750	36,386
Other current liabilities	79,024	32,852
Total current liabilities	577,732	467,058
LONG-TERM DEBT	228,167	73,639
LEASE LIABILITIES	73,213
DEFERRED TAX LIABILITIES	1,387	1,387
OTHER LONG-TERM LIABILITIES	29,331	22,433
Total liabilities	909,830	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, 4,447,438 and 4,229,653 shares, respectively	(101,243)	(87,747)
Additional paid-in capital	320,157	316,479
Retained earnings	338,305	268,904
Total stockholders' equity	557,630	498,047
Total liabilities and stockholders' equity	$ 1,467,460	$ 1,062,564