Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 44,369	$ 75,280
Marketable securities, at fair value	59,199	11,799
Accounts and notes receivable, less allowance for doubtful accounts of $5,316,000 as of September 30, 2015 and $6,136,000 as of December 31, 2014	209,626	198,128
Inventories and supplies	35,887	35,462
Deferred income taxes	0	3,455
Prepaid income taxes	1,086	912
Prepaid expenses and other	11,809	9,792
Total current assets	361,976	334,828
Property and equipment, net	13,251	12,772
Goodwill	44,438	44,438
Other intangible assets, less accumulated amortization of $18,663,000 as of September 30, 2015 and $16,232,000 as of December 31, 2014	17,918	20,349
Notes receivable — long term portion	2,626	5,179
Deferred compensation funding, at fair value	23,905	24,742
Deferred income taxes — long term portion	10,642	27,233
Other noncurrent assets	42	38
TOTAL ASSETS	474,798	469,579
Current liabilities:
Accounts payable	37,982	43,554
Accrued payroll, accrued and withheld payroll taxes	28,183	47,696
Other accrued expenses	6,742	8,961
Deferred income taxes	821	0
Accrued insurance claims	19,115	17,748
Total current liabilities	92,843	117,959
Accrued insurance claims — long term portion	60,531	50,514
Deferred compensation liability	$ 24,306	$ 25,276
Commitments and contingencies
STOCKHOLDERS’ EQUITY:
Common stock, $.01 par value; 100,000,000 shares authorized; 73,692,000 shares issued and outstanding as of September 30, 2015 and 72,878,000 shares as of December 31, 2014	$ 737	$ 729
Additional paid-in capital	196,333	186,022
Retained earnings	110,789	100,237
Accumulated other comprehensive income, net of taxes	206	25
Common stock in treasury, at cost, 1,758,000 shares as of September 30, 2015 and 1,821,000 shares as of December 31, 2014	(10,947)	(11,183)
Total stockholders’ equity	297,118	275,830
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 474,798	$ 469,579