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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Cash flows from operating activities:      
Net income $ 104,998 $ 44,296 $ 28,217
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 166,241 164,259 178,946
Long-lived and other asset impairment 12,041 21,442 21,397
Non-cash restructuring charges 221    
Unrealized change in fair value of investment in unconsolidated affiliate 973 1,864  
Inventory write-downs 545 1,640 997
Amortization of operating lease right-of-use assets 3,319 3,206 3,880
Amortization of deferred financing costs 5,729 5,152 10,127
Amortization of debt premium (2,006) (2,006) (2,006)
Amortization of capitalized implementation costs 2,624 1,984  
Amortization of dedesignated interest rate swap   410 863
Interest rate swaps   631 3,539
Stock-based compensation expense 12,998 11,928 11,336
Provision for (benefit from) credit losses 224 206 (90)
Gain on sale of assets, net (10,199) (12,396) (11,313)
Gain on sale of business   (28,098) (18,945)
Deferred income tax provision 35,658 15,229 10,379
Amortization of contract costs 21,289 19,162 19,990
Deferred revenue recognized in earnings (16,464) (20,956) (10,382)
Changes in operating assets and liabilities:      
Accounts receivable, net (9,123) (19,971) 4,445
Inventory 4,189 (10,520) (12,989)
Other assets (1,895) (2,653) 635
Contract costs (24,292) (29,575) (16,991)
Accounts payable and other liabilities (12,166) 13,529 5,269
Deferred revenue 15,386 24,642 10,217
Other (103) 45 (121)
Net cash provided by operating activities 310,187 203,450 237,400
Cash flows from investing activities:      
Capital expenditures (298,632) (239,867) (97,885)
Proceeds from sale of business   99,611 83,345
Proceeds from sale of property, equipment and other assets 72,206 20,654 29,562
Proceeds from insurance and other settlements 1,222 3,353 1,085
Investments in unconsolidated entities (7,287) (14,667)  
Net cash provided by (used in) investing activities (232,491) (130,916) 16,107
Cash flows from financing activities:      
Borrowings of long-term debt 802,825 826,733 704,751
Repayments of long-term debt (767,050) (809,983) (863,251)
Payments of debt issuance costs (6,031)   (2,451)
Payments for settlement of interest rate swaps that include financing elements   (1,334) (4,390)
Dividends paid to stockholders (95,796) (90,315) (89,343)
Net proceeds from issuance of common stock   4,176 3,401
Repurchases of common stock (8,860)    
Taxes paid related to net share settlement of equity awards (3,829) (2,447) (2,465)
Proceeds from stock issued under ESPP 817 633 713
Net cash used in financing activities (77,924) (72,537) (253,035)
Net increase (decrease) in cash and cash equivalents (228) (3) 472
Cash and cash equivalents, beginning of period 1,566 1,569 1,097
Cash and cash equivalents, end of period 1,338 1,566 1,569
Supplemental disclosure of cash flow information:      
Interest paid 107,765 98,406 100,002
Income taxes paid, net (1,311) (407) (247)
Supplemental disclosure of non-cash investing and financing transactions:      
Accrued capital expenditures $ 25,689 $ 9,899 $ 7,641