Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 54,330	$ 26,279
Marketable securities, at fair value	93,131	95,200
Accounts and notes receivable, less allowance for doubtful accounts of $87,250 and $70,192 as of December 31, 2023 and 2022, respectively	383,509	336,777
Inventories and supplies	18,479	21,164
Taxes receivable	0	6,629
Prepaid expenses and other assets	22,247	22,583
Total current assets	571,696	508,632
Property and equipment, net	28,774	22,975
Goodwill	75,529	75,529
Other intangible assets, less accumulated amortization of $36,557 and $32,738 as of December 31, 2023 and 2022, respectively	12,127	15,946
Notes receivable — long–term portion, less allowance for doubtful accounts of $4,449 and $3,273 as of December 31, 2023 and 2022, respectively	24,832	32,609
Deferred compensation funding, at fair value	40,812	33,493
Deferred tax assets	35,226	30,840
Other long-term assets	1,656	812
Total assets	790,652	720,836
Current liabilities:
Accounts payable	83,224	68,296
Accrued payroll and related taxes	56,142	53,099
Other accrued expenses and current liabilities	21,179	17,835
Borrowings under line of credit	25,000	25,000
Income taxes payable	7,201	0
Deferred compensation liability — short-term	1,501	1,618
Accrued insurance claims	22,681	23,166
Total current liabilities	216,928	189,014
Accrued insurance claims — long-term	61,697	65,541
Deferred compensation liability — long-term	41,186	33,764
Lease liability — long-term	11,235	8,097
Other long-term liabilities	2,990	6,141
Commitments and contingencies (Note 15)
STOCKHOLDERS’ EQUITY:
Common stock, $0.01 par value; 100,000 shares authorized; 76,329 and 76,161 shares issued, and 73,341 and 74,088 shares outstanding as of December 31, 2023 and 2022, respectively	763	762
Additional paid-in capital	310,436	302,304
Retained earnings	185,010	146,602
Accumulated other comprehensive loss, net of taxes	(1,844)	(3,477)
Common stock in treasury, at cost, 2,988 and 2,240 shares as of December 31, 2023 and 2022, respectively	(37,749)	(27,912)
Total stockholders’ equity	456,616	418,279
Total liabilities and stockholders’ equity	$ 790,652	$ 720,836