Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 188,006	$ 272,624
Accounts receivable, net of allowance for doubtful accounts of $24,629 and $12,156 at December 31, 2020 and 2019, respectively	183,964	332,047
Income taxes receivable	8,891	740
Prepaid expenses	36,651	49,132
Inventory and other current assets	96,141	117,629
Assets held for sale	47,635	216,197
Total current assets	561,288	988,369
Property, plant and equipment, net of accumulated depreciation and depletion	542,090	664,949
Operating lease right-of-use assets	50,192	80,906
Goodwill	138,677	137,695
Notes receivable	72,612	68,092
Restricted cash	80,178	2,764
Intangible and other long-term assets, net of accumulated amortization	56,042	50,455
Total assets	1,501,079	1,993,230
Current liabilities:
Accounts payable	55,873	92,966
Accrued expenses	130,332	182,934
Current portion of decommissioning liabilities	3,765	3,649
Liabilities held for sale	4,079	44,938
Total current liabilities	194,049	324,487
Long-term debt, net		1,286,629
Decommissioning liabilities	138,981	132,632
Operating lease liabilities	40,258	62,354
Deferred income taxes	5,288	3,247
Other long-term liabilities	125,356	134,308
Total liabilities not subject to compromise	503,932	1,943,657
Liabilities Subject to Compromise	1,335,794
Stockholders’ equity (deficit):
Preferred stock of $0.01 par value, Authorized - 5,000,000 shares; none issued
Common stock of $0.001 par value Authorized - 25,000,000, Issued - 15,799,318, Outstanding - 14,826,906 at December 31, 2020 Authorized - 25,000,000, Issued - 15,689,463, Outstanding - 14,717,051 at December 31, 2019	16	16
Additional paid in capital	2,756,889	2,752,859
Treasury stock at cost, 972,412 shares at December 31, 2020 and 2019, respectively	(4,290)	(4,290)
Accumulated other comprehensive loss, net	(67,947)	(71,927)
Accumulated deficit	(3,023,315)	(2,627,085)
Total stockholders’ equity (deficit)	(338,647)	49,573
Total liabilities and stockholders’ equity (deficit)	$ 1,501,079	$ 1,993,230