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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Cash flows from operating activities:    
Net income $ (5,037) $ 3,089
Adjustments to reconcile net income to net cash flows provided by operating activities:    
Depreciation 100,421 68,693
Amortization of acquisition intangibles 9,744 4,324
Provision for doubtful accounts 4,969 3,303
Amortization of debt discount and debt issuance costs 1,512 767
Loss on disposition of long-lived assets 3,876 605
Stock-based compensation 5,696 5,116
Deferred income taxes (6,619) (5,939)
Gain on equity investments (5,617) (647)
Loss on pension settlement 1,725  
Unrealized gain on foreign currency   (81)
Changes in operating assets and liabilities, excluding the effects of acquisitions and dispositions:    
Accounts receivable (1,401) 152
Customer receivable (4,399) (25,684)
Prepaid income taxes 6,206 66
Accrued taxes 2,163 (2,172)
Materials and supplies, prepayments, and other current assets (16,358) (4,689)
Accounts payable and accrued liabilities, advance payments and deposits and other current liabilities (4,724) 341
Other assets (4,016) 429
Other liabilities (9,166) 43
Net cash provided by operating activities 78,975 47,716
Cash flows from investing activities:    
Capital expenditures (109,944) (62,222)
Reimbursable capital expenditures (4,015) (8,700)
Purchases of strategic investments (2,750) (6,399)
Receipt of capital government grants 2,668 7,094
Sale of businesses, net of transferred cash of $0 and $0.9 million, respectively 1,835 18,597
Acquisition of business net of $11.9 million of cash acquired   (340,152)
Spectrum deposit refund 1,136  
Proceeds from strategic investments 15,745  
Proceeds from sale of assets 683  
Net cash used in investing activities (94,642) (391,782)
Cash flows from financing activities:    
Dividends paid on common stock (8,028) (8,118)
Distributions to noncontrolling interests (1,375) (4,823)
Payment of debt issuance costs   (6,568)
Finance lease payment (820)  
Term loan - repayments (953) (2,821)
Term loan - borrowings 711 210,000
Revolving credit facility - borrowings 68,000 85,000
Revolving credit facility - repayments (45,000) (10,000)
Proceeds from mezzanine equity   71,533
Proceeds from customer receivable credit facility 12,225 27,540
Repayment of customer receivable credit facility (3,543) (1,005)
Purchases of common stock - stock- based compensation (1,169) (1,713)
Purchases of common stock - share repurchase plan (942) (4,836)
Proceeds from exercise of stock options   383
Investments made by minority shareholders in consolidated affiliates 22  
Repurchases of noncontrolling interests (4,631) (13,139)
Contingent consideration paid for business acquisition (1,718)  
Net cash provided by financing activities 12,779 341,433
Net change in cash, cash equivalents, and restricted cash (2,888) (2,633)
Total cash, cash equivalents, and restricted cash, beginning of period 80,697 104,997
Total cash, cash equivalents, and restricted cash, end of period 77,809 102,364
Noncash investing activity:    
Purchases of property, plant and equipment included in accounts payable and accrued expenses $ 21,491 $ 17,973