Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 26,430	$ 54,330
Restricted cash equivalents	3,117	0
Marketable securities, at fair value	79,134	93,131
Restricted marketable securities, at fair value	22,022	0
Accounts and notes receivable, less allowance for doubtful accounts of $112,133 and $87,250 as of June 30, 2024 and December 31, 2023, respectively	398,884	383,509
Inventories and supplies	17,857	18,479
Prepaid expenses and other assets	25,768	22,247
Total current assets	573,212	571,696
Property and equipment, net	29,840	28,774
Goodwill	75,529	75,529
Other intangible assets, less accumulated amortization of $37,899 and $36,557 as of June 30, 2024 and December 31, 2023, respectively	10,785	12,127
Notes receivable — long–term portion, less allowance for doubtful accounts of $3,152 and $4,449 as of June 30, 2024 and December 31, 2023, respectively	20,871	24,832
Deferred compensation funding, at fair value	46,043	40,812
Deferred tax assets	38,917	35,226
Other long-term assets	4,505	1,656
Total assets	799,702	790,652
Current liabilities:
Accounts payable	72,220	83,224
Accrued payroll and related taxes	57,014	56,142
Other accrued expenses and current liabilities	22,987	21,179
Borrowings under line of credit	30,000	25,000
Income taxes payable	4,279	7,201
Deferred compensation liability — short-term	1,390	1,501
Accrued insurance claims	21,593	22,681
Total current liabilities	209,483	216,928
Accrued insurance claims — long-term	61,209	61,697
Deferred compensation liability — long-term	46,201	41,186
Lease liability — long-term	10,662	11,235
Other long-term liabilities	724	2,990
Commitments and contingencies (Note 15)
STOCKHOLDERS’ EQUITY:
Common stock, $0.01 par value; 200,000 shares authorized; 76,533 and 76,329 shares issued, and 73,383 and 73,341 shares outstanding as of June 30, 2024 and December 31, 2023, respectively	765	763
Additional paid-in capital	314,146	310,436
Retained earnings	198,595	185,010
Accumulated other comprehensive loss, net of taxes	(2,617)	(1,844)
Common stock in treasury, at cost, 3,150 and 2,988 shares as of June 30, 2024 and December 31, 2023, respectively	(39,466)	(37,749)
Total stockholders’ equity	471,423	456,616
Total liabilities and stockholders’ equity	$ 799,702	$ 790,652