Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 32,899	$ 70,794
Marketable securities, at fair value	107,171	114,396
Accounts and notes receivable, less allowance for doubtful accounts of $57,784 and $59,271 as of March 31, 2022 and December 31, 2021, respectively	319,095	293,388
Inventories and supplies	24,820	26,015
Taxes receivable	5,049	8,813
Prepaid expenses and other assets	35,793	32,976
Total current assets	524,827	546,382
Property and equipment, net	26,702	28,102
Goodwill	75,529	74,755
Other intangible assets, less accumulated amortization of $29,097 and $27,879 as of March 31, 2022 and December 31, 2021, respectively	19,587	20,805
Notes receivable – long–term portion, less allowance for doubtful accounts of $5,308 and $6,312 as of March 31, 2022 and December 31, 2021, respectively	27,923	29,259
Deferred compensation funding, at fair value	39,012	46,691
Deferred tax asset	32,936	31,535
Total assets	746,516	777,529
Current liabilities:
Accounts payable	64,037	64,419
Accrued payroll and related taxes	42,160	68,664
Other accrued expenses	26,497	26,741
Borrowings under line of credit	10,000	0
Deferred compensation liability — short-term	6,294	6,991
Accrued insurance claims	25,316	24,310
Total current liabilities	174,304	191,125
Accrued insurance claims — long-term	67,134	65,084
Deferred compensation liability — long-term	39,157	46,888
Lease liability — long-term	10,588	11,299
Other long-term liabilities	8,696	10,456
Commitments and contingencies (Note 15)
STOCKHOLDERS’ EQUITY:
Common stock, $0.01 par value; 100,000 shares authorized; 76,158 and 76,009 shares issued, and 74,036 and 73,769 shares outstanding as of March 31, 2022 and December 31, 2021, respectively	762	760
Additional paid-in capital	296,304	294,124
Retained earnings	179,427	183,957
Accumulated other comprehensive (loss) income, net of taxes	(1,269)	4,000
Common stock in treasury, at cost, 2,122 and 2,240 shares as of March 31, 2022 and December 31, 2021, respectively	(28,587)	(30,164)
Total stockholders’ equity	446,637	452,677
Total liabilities and stockholders’ equity	$ 746,516	$ 777,529