CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
OPERATING ACTIVITIES
NET INCOME	$ 88,234	$ 73,766
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	22,502	23,127
Stock-based compensation expense	5,947	6,138
Provision for expected credit losses	3,896	4,257
Gain on sale of assets, net	(4,714)	(1,279)
Provision for deferred income taxes	6,929	2,445
Changes in operating assets and liabilities:
Trade accounts receivable and other accounts receivable	1,533	(1,440)
Financing receivables	(4,421)	(707)
Materials and supplies	(1,043)	151
Other current assets	(1,501)	(3,629)
Accounts payable and accrued expenses	(17,548)	(16,934)
Unearned revenue	8,656	11,294
Other long-term assets and liabilities	(7,697)	(9,657)
Net cash provided by operating activities	100,773	87,532
INVESTING ACTIVITIES
Acquisitions, net of cash acquired	(15,480)	(13,223)
Capital expenditures	(7,636)	(7,995)
Proceeds from sale of assets	8,886	1,290
Other investing activities, net	640	0
Net cash (used in) investing activities	(13,590)	(19,928)
FINANCING ACTIVITIES
Payment of contingent consideration	(4,098)	(3,051)
Borrowings under term loan	0	251,783
Borrowings under revolving commitment	180,000	11,000
Repayments of term loan	(55,000)	(4,000)
Repayments of revolving commitment	(115,000)	(118,000)
Payment of dividends	(64,053)	(49,205)
Cash paid for common stock purchased	(11,443)	(6,434)
Other financing activities, net	(1,488)	0
Net cash (used in) provided by financing activities	(71,082)	82,093
Effect of exchange rate changes on cash	1,056	3,340
Net increase in cash and cash equivalents	17,157	153,037
Cash and cash equivalents at beginning of period	95,346	105,301
Cash and cash equivalents at end of period	112,503	258,338
Supplemental disclosure of cash flow information:
Cash paid for interest	429	753
Cash paid for income taxes, net	12,572	11,962
Non-cash additions to operating lease right-of-use assets	$ 20,828	$ 17,937