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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Cash flows from operating activities    
Net income $ 9,468 $ 41,155
Adjustments to reconcile net income (loss) to net cash provided by operating activities    
Depreciation and amortization 62,267 62,675
Net loss (gain) on disposal of property and equipment 2,794 (1,503)
Bad debt expense 1,312 876
Amortization of debt issuance costs 344 344
Inventory write-down 209 394
Equity-based compensation 8,308 5,465
Impairment of goodwill 4,396  
Impairment of property and equipment 893 2,282
Impairment of cost-method investment   2,000
Loss on divestitures 3,406  
Other operating items, net (178) (103)
Changes in operating assets and liabilities    
Accounts receivable 3,346 (46,057)
Prepaid expenses and other assets 1,245 (17,848)
Accounts payable and accrued liabilities (23,075) 14,625
Net cash provided by operating activities 74,735 64,305
Cash flows from investing activities    
Working capital settlement 691  
Proceeds received from divestitures 25,259  
Purchase of property and equipment (57,513) (63,050)
Proceeds received from sale of property and equipment 10,507 3,953
Net cash used in investing activities (21,056) (59,097)
Cash flows from financing activities    
Borrowings from revolving line of credit 5,000 25,000
Payments on long-term debt (50,000) (20,000)
Payments of finance lease obligations (549) (1,029)
Proceeds from share issuance 56 431
Distributions to noncontrolling interests, net (225) (280)
Repurchase of common stock (1,516) (657)
Net cash (used in) provided by financing activities (47,234) 3,465
Effect of exchange rate changes on cash 136 (146)
Net (decrease) increase in cash and cash equivalents 6,581 8,527
Cash and cash equivalents, beginning of period 17,237 2,774
Cash and cash equivalents, end of period 23,818 11,301
Supplemental cash flow disclosure:    
Cash paid for interest 2,024 1,959
Cash paid (refunds received) for income taxes 204 (1,188)
Supplemental disclosure of noncash investing activities:    
Capital expenditures included in accounts payable and accrued liabilities $ 15,208 $ 25,013