CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating activities
Net loss	$ (136,171)	$ (672,397)	$ (121,190)
Adjustments to reconcile net loss to operating cash flows:
Depreciation and amortization	203,958	263,819	111,882
Share-based compensation expense	18,439	26,350	11,324
Non-cash interest expense	25,507	24,086	3,851
Non-cash acquisition related costs	0	0	26,411
Provision (benefit) for deferred income taxes	44,970	(30,175)	(87,765)
Loss (gain) on sale or disposal of assets, net	17,208	(5,680)	4,723
Loss on convertible notes derivative	126,600	74,329	0
Loss on early extinguishment of debt	48,708	43,760	6,058
Asset impairments	3,976	11,029	3,009
Goodwill and intangible impairments	0	393,446	100,743
Pension and other postretirement benefit obligations	(150,824)	(117,522)	(100,452)
Change in assets and liabilities:
Accounts receivables, net	(33,246)	111,506	12,608
Inventory	(2,824)	19,965	5,150
Prepaid expenses	5,576	4,078	7,016
Accounts payable and accrued liabilities	(33,457)	(66,377)	44,311
Deferred revenue	931	(19,348)	(8,326)
Other assets and liabilities	(11,898)	(3,099)	6,182
Cash provided by operating activities	127,453	57,770	25,535
Investing activities
Acquisitions, net of cash acquired	(125)	0	(796,502)
Purchases of property, plant, and equipment	(39,560)	(36,975)	(13,978)
Proceeds from sale of publications, real estate and other assets	111,765	196,344	27,486
Insurance proceeds received for damage to property	0	1,643	0
Change in other investing activities	(1,433)	(876)	(2,066)
Cash provided by (used for) investing activities	70,647	160,136	(785,060)
Financing activities
Payments of debt issuance costs	(21,071)	(2,307)	(121,223)
Borrowings of long-term debt	1,934,940	0	1,792,000
Borrowings under revolving credit facility	0	0	153,900
Repayments of long-term debt	(2,156,046)	(681,050)	(481,058)
Repayments under revolving credit facility	0	0	(153,900)
Repurchase of convertible debt	(15,012)	0	(197,950)
Proceeds from convertible debt	0	497,094	0
Payments of dividends	0	0	(91,936)
Changes in other financing activities	(3,983)	(15,079)	(920)
Cash provided by (used for) financing activities	(261,172)	(201,342)	898,913
Effect of currency exchange rate change	(35)	1,498	(3,494)
Increase (decrease) in cash, cash equivalents and restricted cash	(63,107)	18,062	135,894
Balance of cash, cash equivalents and restricted cash at beginning of year	206,726	188,664	52,770
Cash, cash equivalents and restricted cash at end of year	$ 143,619	$ 206,726	$ 188,664