Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Cash flows from operating activities:
Net income	$ 59,059	$ 39,471	$ 38,386
Adjustments to reconcile net income to net cash from operating activities
Depreciation and amortization	16,778	14,585	14,344
Bad debt provision	83,079	46,760	35,604
Deferred income taxes	19,202	(2,944)	(4,820)
Share-based compensation expense	12,005	9,165	8,985
Amortization of premium on marketable securities	295	1,504	2,144
Unrealized gain on deferred compensation fund investments	(7,326)	(8,168)	(6,645)
Changes in other long-term liabilities	(384)	(564)	(1,154)
Net loss on disposals of property and equipment	422	654	818
Share of loss from equity method investment	2,386	532	0
Changes in operating assets and liabilities:
Accounts and notes receivable	5,227	(61,809)	(74,559)
Inventories and supplies	(48)	1,731	2,685
Prepaid expenses and other assets	2,623	704	12,750
Deferred compensation funding	318	(534)	(674)
Accounts payable and other accrued expenses and current liabilities	(12,064)	(9,741)	7,430
Deferred ERC Credits	12,277	0	0
Accrued payroll and related taxes	(19,162)	(3,573)	4,186
Income taxes receivable (payable)	(30,637)	1,190	572
Accrued insurance claims	(6,503)	(7,362)	(4,329)
Deferred compensation liability	7,421	9,201	7,775
Net cash from operating activities	144,968	30,802	43,498
Cash flows from investing activities:
Proceeds from disposals of property and equipment	105	211	121
Additions to property and equipment	(5,818)	(6,336)	(5,406)
Cash paid for acquisition	(7,153)	0	0
Cash paid for investments	(2,625)	(2,750)	0
Purchases of marketable securities	(18,717)	(52,090)	0
Sales of marketable securities	23,205	67,012	1,992
Net cash from investing activities	(11,003)	6,047	(3,293)
Cash flows from financing activities:
Purchases of treasury stock	(61,586)	(5,018)	(11,283)
Repayments of short-term borrowings	0	(25,000)	0
Payments of statutory withholding on net issuance of common stock	(1,744)	(1,030)	(871)
Net cash from financing activities	(63,330)	(31,048)	(12,154)
Net increase in cash, cash equivalents, and restricted cash equivalents	70,635	5,801	28,051
Cash, cash equivalents and restricted cash equivalents at beginning of the period	60,131	54,330	26,279
Cash, cash equivalents and restricted cash equivalents at end of the period	130,766	60,131	54,330
Supplementary cash flow information:
Cash paid for interest	$ 1,680	$ 6,491	$ 7,809