CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
CURRENT ASSETS:
Cash and cash equivalents	$ 34,465	$ 32,074
Accounts receivable, less allowance for doubtful accounts of $4,715 and $4,288, respectively	391,536	318,837
Other receivables	14,333	20,363
Inventories	10,571	9,208
Prepaid expenses and other	5,611	6,106
Costs and estimated earnings in excess of billings	40,653	29,369
Total current assets	497,169	415,957
PROPERTY AND EQUIPMENT, NET	74,539	68,195
GOODWILL	203,223	149,208
IDENTIFIABLE INTANGIBLE ASSETS, NET	83,269	42,435
DEFERRED INCOME TAX ASSETS	29,717	27,170
OTHER NONCURRENT ASSETS	5,238	5,938
Total assets	893,155	708,903
CURRENT LIABILITIES:
Current maturities of long-term debt	1,113	600
Current maturities of long-term capital lease obligations	112	163
Accounts payable	124,326	103,440
Accrued compensation and benefits	59,857	61,712
Billings in excess of costs and estimated earnings	99,536	83,985
Accrued self-insurance	34,987	33,520
Other current liabilities	55,485	34,261
Total current liabilities	375,416	317,681
LONG-TERM DEBT	103,468	1,955
LONG-TERM CAPITAL LEASE OBLIGATIONS	45	93
DEFERRED INCOME TAX LIABILITIES	2,289	2,289
OTHER LONG-TERM LIABILITIES	15,025	10,252
Total liabilities	496,243	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, 3,835,735 and 3,914,251 shares, respectively	(59,219)	(57,387)
Additional paid-in capital	311,692	309,625
Retained earnings	144,028	123,984
Total stockholders’ equity	396,912	376,633
Total liabilities and stockholders' equity	$ 893,155	$ 708,903