Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities:
Net income	$ 78,499	$ 76,198
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	75,228	73,125
Stock-based compensation	14,466	8,040
Amortization included in interest expense	1,631	1,642
Gain on disposition of assets	(2,188)	(2,688)
Equity in loss (earnings) of investee	559	(178)
Deferred tax expense (benefit)	246	(1,152)
Provision for doubtful accounts	312	1,397
Decrease (increase) in:
Receivables	2,229	24,208
Prepaid expenses	(6,746)	(10,833)
Other assets	(6,306)	(7,523)
Increase (decrease) in:
Trade accounts payable	325	(1,911)
Accrued expenses	(20,355)	(24,010)
Operating lease liabilities	(32,035)	(40,801)
Other liabilities	4,697	13,198
Net cash provided by (used in) operating activities	110,562	108,712
Cash flows from investing activities:
Acquisitions	(18,265)	(13,627)
Capital expenditures	(29,482)	(42,285)
Proceeds from disposition of assets and investments	2,731	3,248
Net cash (used in) provided by investing activities	(45,016)	(52,664)
Cash flows from financing activities:
Cash used for purchase of treasury stock	(5,341)	(5,947)
Net proceeds from issuance of common stock	7,067	4,208
Principal payments on long-term debt	(98)	(93)
Principal payments on financing leases	(333)	(333)
Payments on revolving credit facility	(70,000)	(20,000)
Proceeds received from revolving credit facility	143,000	90,000
Proceeds received from accounts receivable securitization program	6,900	9,800
Payments on accounts receivable securitization program	(21,200)	(25,000)
Debt issuance costs	(23)	(25)
Distributions to non-controlling interest	(479)	(214)
Dividends/distributions	(133,119)	(127,551)
Net cash used in financing activities	(73,626)	(75,155)
Effect of exchange rate changes in cash and cash equivalents	(120)	10
Net decrease in cash and cash equivalents	(8,200)	(19,097)
Cash and cash equivalents at beginning of period	44,605	52,619
Cash and cash equivalents at end of period	36,405	33,522
Supplemental disclosures of cash flow information:
Cash paid for interest	42,520	39,430
Cash paid for foreign, state and federal income taxes	$ 2,953	$ 3,182