Guarantor/Non Guarantor Condensed Consolidating Financial Statements (Cash Flows)) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities	$ (5,391)	$ (10,790)
Cash flows from investing activities:
Purchases of property and equipment	(7,503)	(16,844)
Proceeds from sale of property and equipment	727	1,043
Net cash provided by (used in) investing activities	(6,776)	(15,801)
Cash flows from financing activities:
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 increase (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
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities	149	0
Cash flows from investing activities:
Purchases of property and equipment	0	0
Proceeds from sale of property and equipment	(149)	0
Net cash provided by (used in) investing activities	(149)	0
Cash flows from financing activities:
Proceeds from DIP Facility	0
DIP Facility issuance costs	0
Purchase of treasury stock	0	0
Intercompany contributions/distributions	0	0
Net cash provided by (used in) financing activities	0	0
Net increase (decrease) in cash, cash equivalents and restricted cash	0	0
Beginning cash, cash equivalents, and restricted cash	0	0
Ending cash, cash equivalents, and restricted cash	0	0
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities	16,839	7,603
Cash flows from investing activities:
Purchases of property and equipment	(5,617)	(15,496)
Proceeds from sale of property and equipment	876	987
Net cash provided by (used in) investing activities	(4,741)	(14,509)
Cash flows from financing activities:
Proceeds from DIP Facility	0
DIP Facility issuance costs	0
Purchase of treasury stock	0	0
Intercompany contributions/distributions	(12,098)	6,906
Net cash provided by (used in) financing activities	(12,098)	6,906
Net increase (decrease) in cash, cash equivalents and restricted cash	0	0
Beginning cash, cash equivalents, and restricted cash	0	0
Ending cash, cash equivalents, and restricted cash	0	0
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities	(1,262)	414
Cash flows from investing activities:
Purchases of property and equipment	(1,323)	(1,186)
Proceeds from sale of property and equipment	0	56
Net cash provided by (used in) investing activities	(1,323)	(1,130)
Cash flows from financing activities:
Proceeds from DIP Facility	0
DIP Facility issuance costs	0
Purchase of treasury stock	0	0
Intercompany contributions/distributions	(53)	(45)
Net cash provided by (used in) financing activities	(53)	(45)
Net increase (decrease) in cash, cash equivalents and restricted cash	(2,638)	(761)
Beginning cash, cash equivalents, and restricted cash	10,158	3,216
Ending cash, cash equivalents, and restricted cash	7,520	2,455
Parent [Member]
Condensed Financial Statements, Captions [Line Items]
Cash flows from operating activities	(21,117)	(18,807)
Cash flows from investing activities:
Purchases of property and equipment	(563)	(162)
Proceeds from sale of property and equipment	0	0
Net cash provided by (used in) investing activities	(563)	(162)
Cash flows from financing activities:
Proceeds from DIP Facility	4,000
DIP Facility issuance costs	(988)
Purchase of treasury stock	(7)	(120)
Intercompany contributions/distributions	12,151	(6,861)
Net cash provided by (used in) financing activities	15,156	(6,981)
Net increase (decrease) in cash, cash equivalents and restricted cash	(6,524)	(25,950)
Beginning cash, cash equivalents, and restricted cash	15,459	51,348
Ending cash, cash equivalents, and restricted cash	$ 8,935	$ 25,398

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Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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