Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 24,327	$ 33,189
Marketable securities, at fair value	80,623	69,496
Accounts and notes receivable, less allowance for doubtful accounts of $6,376,000 as of September 30, 2016 and $4,608,000 as of December 31, 2015	265,533	214,854
Inventories and supplies	37,603	36,308
Prepaid expenses and other	16,382	11,495
Total current assets	424,468	365,342
Property and equipment, net	13,275	13,086
Goodwill	44,438	44,438
Other intangible assets, less accumulated amortization of $14,065,000 as of September 30, 2016 and $19,473,000 as of December 31, 2015	15,016	17,108
Notes receivable - long term portion	4,048	2,972
Deferred compensation funding, at fair value	26,332	25,391
Deferred income taxes	9,198	12,567
Other noncurrent assets	48	45
TOTAL ASSETS	536,823	480,949
Current liabilities:
Accounts payable	39,529	41,472
Accrued payroll, accrued and withheld payroll taxes	37,850	18,062
Other accrued expenses	2,767	3,115
Income taxes payable	9,332	3,212
Accrued legal expenses	2,284	10,464
Accrued insurance claims	23,907	19,740
Total current liabilities	115,669	96,065
Accrued insurance claims - long term portion	63,213	62,510
Deferred compensation liability	26,837	25,918
Commitments and contingencies
STOCKHOLDERS’ EQUITY:
Common stock, $.01 par value; 100,000,000 shares authorized; 74,187,000 and 73,793,000 shares issued, and 72,510,000 and 72,034,000 shares outstanding as of September 30, 2016 and December 31, 2015, respectively	742	738
Additional paid-in capital	215,531	199,294
Retained earnings	124,134	106,886
Accumulated other comprehensive income, net of taxes	1,308	543
Common stock in treasury, at cost; 1,677,000 shares as of September 30, 2016 and 1,759,000 shares as of December 31, 2015	(10,611)	(11,005)
Total stockholders’ equity	331,104	296,456
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 536,823	$ 480,949