CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
CURRENT ASSETS:
Cash and cash equivalents	$ 29,496	$ 32,074
Accounts receivable, less allowance for doubtful accounts of $4,328 and $4,288, respectively	390,497	318,837
Other receivables	13,651	20,363
Inventories	10,778	9,208
Prepaid expenses and other	11,622	6,106
Costs and estimated earnings in excess of billings	39,333	29,369
Total current assets	495,377	415,957
PROPERTY AND EQUIPMENT, NET	74,883	68,195
GOODWILL	203,771	149,208
IDENTIFIABLE INTANGIBLE ASSETS, NET	78,527	42,435
DEFERRED INCOME TAX ASSETS	27,282	27,170
OTHER NONCURRENT ASSETS	4,747	5,938
Total assets	884,587	708,903
CURRENT LIABILITIES:
Current maturities of long-term debt	618	600
Current maturities of long-term capital lease obligations	90	163
Accounts payable	122,203	103,440
Accrued compensation and benefits	68,294	61,712
Billings in excess of costs and estimated earnings	103,049	83,985
Accrued self-insurance	32,774	33,520
Other current liabilities	46,774	34,261
Total current liabilities	373,802	317,681
LONG-TERM DEBT	80,951	1,955
LONG-TERM CAPITAL LEASE OBLIGATIONS	33	93
DEFERRED INCOME TAX LIABILITIES	2,289	2,289
OTHER LONG-TERM LIABILITIES	15,583	10,252
Total liabilities	472,658	332,270
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, 3,989,139 and 3,914,251 shares, respectively	(64,312)	(57,387)
Additional paid-in capital	312,312	309,625
Retained earnings	163,518	123,984
Total stockholders’ equity	411,929	376,633
Total liabilities and stockholders' equity	$ 884,587	$ 708,903