Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 29,288	$ 54,330
Restricted cash equivalents	24,695	0
Marketable securities, at fair value	75,618	93,131
Accounts and notes receivable, less allowance for doubtful accounts of $91,868 and $87,250 as of March 31, 2024 and December 31, 2023, respectively	407,140	383,509
Inventories and supplies	18,042	18,479
Prepaid expenses and other assets	25,631	22,247
Total current assets	580,414	571,696
Property and equipment, net	29,190	28,774
Goodwill	75,529	75,529
Other intangible assets, less accumulated amortization of $37,228 and $36,557 as of March 31, 2024 and December 31, 2023, respectively	11,456	12,127
Notes receivable — long–term portion, less allowance for doubtful accounts of $3,720 and $4,449 as of March 31, 2024 and December 31, 2023, respectively	23,287	24,832
Deferred compensation funding, at fair value	44,269	40,812
Deferred tax assets	35,434	35,226
Other long-term assets	4,301	1,656
Total assets	803,880	790,652
Current liabilities:
Accounts payable	72,916	83,224
Accrued payroll and related taxes	38,338	56,142
Other accrued expenses and current liabilities	21,931	21,179
Borrowings under line of credit	40,000	25,000
Income taxes payable	11,759	7,201
Deferred compensation liability — short-term	1,293	1,501
Accrued insurance claims	23,138	22,681
Total current liabilities	209,375	216,928
Accrued insurance claims — long-term	62,796	61,697
Deferred compensation liability — long-term	44,271	41,186
Lease liability — long-term	10,590	11,235
Other long-term liabilities	2,267	2,990
Commitments and contingencies (Note 14)
STOCKHOLDERS’ EQUITY:
Common stock, $0.01 par value; 100,000 shares authorized; 76,533 and 76,329 shares issued, and 73,646 and 73,341 shares outstanding as of March 31, 2024 and December 31, 2023, respectively	765	763
Additional paid-in capital	312,080	310,436
Retained earnings	200,381	185,010
Accumulated other comprehensive loss, net of taxes	(2,172)	(1,844)
Common stock in treasury, at cost, 2,887 and 2,988 shares as of March 31, 2024 and December 31, 2023, respectively	(36,473)	(37,749)
Total stockholders’ equity	474,581	456,616
Total liabilities and stockholders’ equity	$ 803,880	$ 790,652