CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 7,319	$ 11,017
Accounts receivable, net of allowance for doubtful accounts	55,957	69,821
Other current assets	6,756	6,250
Total current assets	70,032	87,088
Property and equipment, net (full cost method)	691,283	529,059
Derivative assets	32	0
Deferred Tax Assets, Net, Noncurrent	4,780	4,943
Other assets	3,273	8,507
Total assets	769,400	629,597
Current liabilities
Accounts payable and accrued liabilities	97,134	96,181
Derivative liabilities	36,820	27,777
Total current liabilities	133,954	123,958
Other liabilities	5,308	4,833
Derivative liabilities	16,108	13,900
Long-term debt, net	383,766	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; 15,058,210 and 15,018,870 shares issued as of March 31, 2018 and December 31, 2017, respectively	151	150
Paid-in capital	195,111	194,123
Retained earnings	35,002	27,366
Accumulated other comprehensive income	0	0
Total shareholders’ equity	230,264	221,639
Total liabilities and shareholders’ equity	$ 769,400	$ 629,597

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.