CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents	$ 29,130	$ 45,620
Billed accounts receivable, less allowance for doubtful accounts of $5,865 and $5,898, respectively	447,298	481,366
Unbilled accounts receivable	38,463	37,180
Other receivables	13,711	16,361
Inventories	12,908	12,416
Prepaid expenses and other	7,476	6,544
Costs and estimated earnings in excess of billings	8,286	10,213
Total current assets	557,272	609,700
PROPERTY AND EQUIPMENT, NET	102,774	99,618
LEASE RIGHT-OF-USE ASSET	70,316
GOODWILL	235,860	235,182
IDENTIFIABLE INTANGIBLE ASSETS, NET	91,073	95,275
DEFERRED TAX ASSETS	17,485	17,634
OTHER NONCURRENT ASSETS	5,252	5,155
Total assets	1,080,032	1,062,564
CURRENT LIABILITIES:
Current maturities of long-term debt	2,755	3,279
Accounts payable	136,115	176,167
Accrued compensation and benefits	65,135	87,388
Billings in excess of costs and estimated earnings	120,290	130,986
Accrued self-insurance	37,615	36,386
Other current liabilities	47,933	32,852
Total current liabilities	409,843	467,058
LONG-TERM DEBT	74,483	73,639
LONG-TERM LEASE LIABILITIES	62,028
DEFERRED TAX LIABILITIES	1,387	1,387
OTHER LONG-TERM LIABILITIES	17,096	22,433
Total liabilities	564,837	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, 4,232,418 and 4,229,653 shares, respectively	(90,171)	(87,747)
Additional paid-in capital	319,691	316,479
Retained earnings	285,264	268,904
Total stockholders' equity	515,195	498,047
Total liabilities and stockholders' equity	$ 1,080,032	$ 1,062,564