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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Dec. 31, 2022
Jun. 30, 2022
Mar. 31, 2022
Cash flows from operating activities:        
Net income $ 16,485     $ 1,721
Adjustments to reconcile net income to net cash provided by operating activities:        
Depreciation and amortization 40,181     43,039
Long-lived and other asset impairment 2,569     7,416
Non-cash restructuring charges 927      
Unrealized change in fair value of investment in unconsolidated affiliate 254      
Inventory write-downs 216     294
Amortization of operating lease right-of-use assets 823     780
Amortization of deferred financing costs 1,288     1,288
Amortization of debt premium (501)     (502)
Amortization of capitalized implementation costs 597      
Amortization of dedesignated interest rate swap       410
Interest rate swaps       631
Stock-based compensation expense 3,327     3,067
Provision for (benefit from) credit losses (340)     108
Gain on sale of assets, net (3,605)     (2,112)
Deferred income tax provision 5,881     886
Amortization of contract costs 5,090     4,476
Deferred revenue recognized in earnings (4,476)     (3,115)
Changes in operating assets and liabilities:        
Accounts receivable, net 7,632     (15,084)
Inventory (4,131)     (1,021)
Other assets 609     444
Contract costs (6,352)     (5,320)
Accounts payable and other liabilities 18,219     32,718
Deferred revenue 3,179     6,351
Other (16)     97
Net cash provided by operating activities 87,856     76,572
Cash flows from investing activities:        
Capital expenditures (84,392)     (44,858)
Proceeds from sale of property, equipment and other assets 28,726     5,437
Proceeds from insurance and other settlements       2,763
Investments in unconsolidated entities (2,000)      
Net cash used in investing activities (57,666)     (36,658)
Cash flows from financing activities:        
Borrowings of long-term debt 158,850     172,500
Repayments of long-term debt (160,100)     (186,500)
Payments for settlement of interest rate swaps that include financing elements       (1,334)
Dividends paid to stockholders (23,852) $ (22,589) $ (22,494) (22,673)
Proceeds from stock issued under ESPP 170     149
Purchases of treasury stock (3,773)     (2,363)
Net cash used in financing activities (28,705)     (40,221)
Net increase (decrease) in cash and cash equivalents 1,485     (307)
Cash and cash equivalents, beginning of period 1,566   $ 1,262 1,569
Cash and cash equivalents, end of period $ 3,051 $ 1,566   $ 1,262