CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 8,011	$ 11,017
Accounts receivable, net of allowance for doubtful accounts	72,045	69,821
Other current assets	7,446	6,250
Total current assets	87,502	87,088
Property and equipment, net (full cost method)	858,766	529,059
Deferred income taxes	4,790	4,943
Other assets	2,578	8,507
Total assets	953,636	629,597
Current liabilities
Accounts payable and accrued liabilities	111,962	96,181
Derivative liabilities	80,641	27,777
Total current liabilities	192,603	123,958
Other liabilities	5,211	4,833
Derivative liabilities	37,570	13,900
Long-term debt, net	472,344	265,267
Commitments and contingencies (Note 13)
Shareholders’ equity:
Preferred stock of $0.01 par value – 5,000,000 shares authorized; none issued	0	0
Common stock of $0.01 par value – 45,000,000 shares authorized; 15,073,776 and 15,018,870 shares issued as of September 30, 2018 and December 31, 2017, respectively	151	150
Paid-in capital	197,000	194,123
Retained earnings	48,757	27,366
Accumulated other comprehensive income	0	0
Total shareholders’ equity	245,908	221,639
Total liabilities and shareholders’ equity	$ 953,636	$ 629,597