CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities:
Net income		$ 126,209	$ 271,291
Adjustments to reconcile net income to net cash flow from operating activities:
Depreciation and amortization		48,960	56,806
Employee stock-based compensation awards		13,075	20,070
Company stock 401(k) match contributions		8,649	10,216
Gain on investment sales		0	(153,626)
Pension expense, net of employer contributions		1,558	436
Change in operating assets and liabilities, net of acquisitions:
Decrease in trade receivables		19,646	19,830
Decrease in accounts payable		(1,904)	(35,820)
(Decrease) increase in interest and taxes payable		(55,510)	33,194
Increase in deferred revenue		972	50
Changes in other assets and liabilities, net		(2,164)	2,712
Net cash flow from operating activities		159,491	225,159
Cash flows from investing activities:
Purchase of property and equipment		(12,051)	(20,883)
Payments for acquisitions of businesses and assets, net of cash acquired		(1,745)	(52,799)
Payments for investments		(2,631)	(9,789)
Proceeds from investments		1,487	155,037
Proceeds from sale of assets		668	64
Net cash flow (used for) provided by investing activities		(14,272)	71,630
Cash flows from financing activities:
Repurchase of common stock		0	(154,699)
Dividends paid		(40,196)	(40,914)
Payments for debt issuance costs		0	(6,448)
Payment for acquisition-related earnout consideration		(6,364)	0
Repurchase of noncontrolling interest in Premion		(20,845)	0
Payments for tax withholding related to vested stock-based compensation awards and share repurchase excise tax		(14,488)	(10,035)
Net cash flow used for financing activities		(81,893)	(212,096)
Increase in cash and cash equivalents		63,326	84,693
Balance of cash and cash equivalents at beginning of period		693,214	361,036
Balance of cash and cash equivalents at end of period		756,540	445,729
Supplemental cash flow information:
Cash paid for income taxes, net of refunds	[1]	90,237	48,091
Cash paid for interest		$ 81,617	$ 82,619

[1] Includes $58,125 of payments for clean energy tax credits in 2025.