Consolidated Balance Sheet - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 73,343	$ 141,945
Restricted cash	1,621	7,996
Trade receivables, net of allowance for doubtful accounts of $5.0 million each year	37,527	24,717
Materials and supplies	37,580	49,861
Assets held for sale	117,117	10,113
Prepaid expenses and other current assets	18,309	19,038
Total current assets	285,497	253,670
Property and equipment
Property and equipment	645,622	794,944
Accumulated depreciation	(266,018)	(278,562)
Property and equipment, net	379,604	516,382
Operating lease ROU assets	2,450	3,997
Other assets	31,843	12,126
Total assets	699,394	786,175
Current liabilities
Accounts payable	31,420	25,466
Other current liabilities	31,533	24,734
Liabilities held for sale	6,720
Total current liabilities	69,673	50,200
Long-term debt, net of discount and financing costs of $3,142 and $4,781	346,858	345,219
Other long-term liabilities	17,012	15,011
Commitments and contingencies (see Note 8)
Shareholders' equity
Ordinary shares, $0.001 par value, 50 million shares authorized; 13,115,026 shares issued and outstanding each year	13	13
Additional paid-in capital	633,847	634,181
Accumulated deficit	(369,792)	(259,655)
Controlling interest shareholders' equity	264,068	374,539
Noncontrolling interests	1,783	1,206
Total equity	265,851	375,745
Total liabilities and shareholders’ equity	$ 699,394	$ 786,175