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Chapter 11 Cases and Subsequent Events Debtor Condensed Combined Statement of Cash Flows (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Entity Information [Line Items]    
Cash flows from operating activities $ (5,391) $ (10,790)
Purchases of property and equipment (7,503) (16,844)
Proceeds from sale of property and equipment 727 1,043
Net cash used in investing activities (6,776) (15,801)
Proceeds from DIP Facility 4,000 0
DIP Facility issuance costs (988) 0
Purchase of treasury stock (7) (120)
Intercompany contributions/distributions 0 0
Net cash provided by (used in) financing activities 3,005 (120)
Net decrease in cash, cash equivalents and restricted cash (9,162) (26,711)
Beginning cash, cash equivalents, and restricted cash 25,617 54,564
Ending cash, cash equivalents, and restricted cash 16,455 $ 27,853
Debtor Entities in Bankruptcy [Member]    
Entity Information [Line Items]    
Cash flows from operating activities (4,277)  
Purchases of property and equipment (6,180)  
Proceeds from sale of property and equipment 876  
Net cash used in investing activities (5,304)  
Proceeds from DIP Facility 4,000  
DIP Facility issuance costs (988)  
Purchase of treasury stock (7)  
Intercompany contributions/distributions 53  
Net cash provided by (used in) financing activities 3,058  
Net decrease in cash, cash equivalents and restricted cash (6,523)  
Beginning cash, cash equivalents, and restricted cash 15,459  
Ending cash, cash equivalents, and restricted cash $ 8,936