CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 4,655	$ 17,864
Accounts receivable, net of allowance for doubtful accounts	70,148	66,038
Derivative Asset, Current	2,658	34,932
Income Taxes Receivable, Current	3,707	2,471
Other current assets	4,553	5,125
Total current assets	85,721	126,430
Property and equipment, net (full cost method)	989,830	927,994
Derivative Asset, Noncurrent	229	10,100
Deferred income taxes	737	1,949
Other assets	4,555	2,481
Total assets	1,081,072	1,068,954
Current liabilities
Accounts payable and accrued liabilities	117,268	103,700
Derivative liabilities	25,107	991
Total current liabilities	142,375	104,691
Other liabilities	7,684	5,533
Derivative liabilities	6,150	0
Long-term debt, net	515,919	511,375
Commitments and contingencies (Note 12)
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; 15,105,251 and 15,080,594 shares issued as of March 31, 2019 and December 31, 2018, respectively	151	151
Paid-in capital	198,011	197,630
Retained earnings	210,701	249,492
Accumulated other comprehensive income	81	82
Total shareholders’ equity	408,944	447,355
Total liabilities and shareholders’ equity	$ 1,081,072	$ 1,068,954