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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Cash flows from operating activities    
Net income $ (8,018) $ 3,930
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 27,265 25,237
Amortization of debt issuance costs and discounts on debt 1,261 1,267
Share-based compensation 4,140 1,844
Loss on disposal of property and equipment 247 77
Change in fair value of derivative 2,248 (3,211)
Deferred income taxes (651) 373
Changes in operating assets and liabilities, net of acquisitions:    
Accounts receivable (1,734) 646
Income taxes receivable 193 846
Prepaid expenses (980) 2,542
Inventories and other current assets 527 797
Accounts payable and other accrued expenses 277 (5,359)
Accrued taxes, other than income taxes 1,523 807
Other 465 263
Net cash provided by operating activities 26,763 30,059
Cash flows from investing activities    
Purchase of property and equipment, net of change in construction payables (27,094) (10,242)
Acquisition of business, net of cash acquired (148,952)  
Proceeds from disposal of property and equipment 26  
Other investing activities (45) 28
Net cash used in investing activities (176,065) (10,214)
Cash flows from financing activities    
Repayments of term loans (2,000) (2,000)
Borrowings under revolving credit facility 145,000  
Repayments of notes payable (855) (109)
Principal payments under finance leases (367) (229)
Proceeds from issuance of common stock, net of issuance costs   25,608
Tax withholding on share-based payments (288)  
Net cash provided by financing activities 141,490 23,270
Cash and cash equivalents    
Change in cash and cash equivalents (7,812) 43,115
Balance, beginning of period 116,071 90,579
Balance, end of period 108,259 133,694
Supplemental cash flow disclosures    
Cash paid for interest 16,579 14,615
Cash received for income taxes, net (193)  
Non-cash investing and financing activities    
Payables incurred for capital expenditures 4,064 $ 1,652
Impairment of right-of-use asset 12,272  
Common stock issued in connection with acquisition $ 16,608