Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows used in operating activities:
Net income	$ 21,282	$ 18,149
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	7,315	7,765
Bad debt provision	18,170	17,024
Deferred income tax benefit	42	0
Share-based compensation expense	4,409	4,768
Amortization of premium on marketable securities	1,073	1,125
Unrealized (gain) loss on deferred compensation fund investments	(3,790)	10,620
Changes in other long-term liabilities	(249)	(2,050)
Net loss on disposals of property and equipment	387	560
Changes in operating assets and liabilities:
Accounts and notes receivable	(59,585)	(58,810)
Inventories and supplies	1,188	2,480
Prepaid expenses and other assets	7,824	(508)
Deferred compensation funding	262	3,751
Accounts payable and other accrued expenses	(9,337)	(15,893)
Accrued payroll, accrued and withheld payroll taxes	(2,338)	(5,523)
Income taxes payable and receivable	(4,339)	5,038
Accrued insurance claims	5,104	6,217
Deferred compensation liability	3,695	(15,877)
Net cash used in operating activities	(8,887)	(21,164)
Cash flows (used in) from investing activities:
Disposals of property and equipment	85	201
Additions to property and equipment	(2,097)	(2,580)
Purchases of marketable securities	0	(2,875)
Sales of marketable securities	1,375	9,526
Cash paid for acquisitions	0	(114)
Net cash (used in) from investing activities	(637)	4,158
Cash flows from (used in) financing activities:
Dividends paid	0	(31,499)
Reissuance of treasury stock pursuant to Dividend Reinvestment Plan	0	51
Proceeds from the exercise of stock options	0	410
Purchases of treasury stock	(2,223)	0
Proceeds from short-term borrowings	15,000	10,000
Payments of statutory withholding on net issuance of restricted stock units	(870)	(1,069)
Net cash from (used in) financing activities	11,907	(22,107)
Net change in cash and cash equivalents	2,383	(39,113)
Cash and cash equivalents at beginning of the period	26,279	70,794
Cash and cash equivalents at end of the period	$ 28,662	$ 31,681