CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
CURRENT ASSETS:
Cash and cash equivalents	$ 28,001	$ 36,542
Billed accounts receivable, less allowance for doubtful accounts of $4,202 and $3,400, respectively	455,596	382,867
Unbilled accounts receivable	42,237
Other receivables	11,572	21,235
Inventories	11,986	10,303
Prepaid expenses and other	5,183	8,294
Costs and estimated earnings in excess of billings	7,248	30,116
Total current assets	561,823	489,357
PROPERTY AND EQUIPMENT, NET	91,898	87,591
GOODWILL	205,162	200,584
IDENTIFIABLE INTANGIBLE ASSETS, NET	77,968	76,044
DEFERRED TAX ASSETS	17,138	22,966
OTHER NONCURRENT ASSETS	5,177	4,578
Total assets	959,166	881,120
CURRENT LIABILITIES:
Current maturities of long-term debt	1,113	613
Accounts payable	145,374	132,011
Accrued compensation and benefits	66,128	69,217
Billings in excess of costs and estimated earnings	133,962	106,005
Accrued self-insurance	32,524	32,228
Other current liabilities	39,211	33,654
Total current liabilities	418,312	373,728
LONG-TERM DEBT	57,864	59,926
DEFERRED TAX LIABILITIES	4,835	2,263
OTHER LONG-TERM LIABILITIES	17,180	27,258
Total liabilities	498,191	463,175
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, 3,877,756 and 3,936,291 shares, respectively	(67,386)	(63,519)
Additional paid-in capital	316,235	312,784
Retained earnings	211,715	168,269
Total stockholders’ equity	460,975	417,945
Total liabilities and stockholders’ equity	$ 959,166	$ 881,120