Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 6,571	$ 1,664
Restricted cash	1,926	1,777
Oil and gas revenue receivable and other receivables, net of allowances $11,967	42,453	78,321
Derivative assets	44,261	32,100
Income tax receivable		881
Other current assets	7,911	10,746
Total current assets	103,122	125,489
Oil and gas properties, net, using the full cost method of accounting:
Proven, net of accumulated depletion, depreciation, amortization and impairments	1,266,743	1,552,419
Property, plant and equipment, net	8,435	9,779
Long-term right-of-use assets	116,579	119,496
Other assets	5,779	8,093
Total assets	1,500,658	1,815,276
Current liabilities:
Accounts payable	9,314	13,570
Accrued liabilities	41,885	44,480
Production taxes payable	72,088	53,428
Current portion of long-term debt
Credit facility		64,700
Long-term debt	1,928,528	1,928,048
Add: Premium on exchange transactions	193,237	203,883
Less: Unamortized deferred financing costs and discount	(43,730)	(46,421)
Total current portion of long-term debt, net	2,078,035	2,150,210
Interest payable	23,390	29,903
Lease liabilities	12,166	11,938
Derivative liabilities	4,866	20,692
Total current liabilities	2,241,744	2,324,221
Long-term lease liabilities	104,447	107,587
Asset retirement obligations	197,482	193,995
Other long-term obligations	18,181	34,287
Total liabilities	2,561,854	2,660,090
Commitments and contingencies (Note 11)
Shareholders' equity:
Common stock - As of March 31, 2020 and December 31, 2019, no par value; authorized - unlimited; issued and outstanding - 199,310,216 and 197,888,473, respectively	2,141,751	2,140,520
Treasury stock	(49)	(49)
Retained loss	(3,202,898)	(2,985,285)
Total shareholders' deficit	(1,061,196)	(844,814)
Total liabilities and shareholders' equity	$ 1,500,658	$ 1,815,276