Description of Business and Significant Accounting Policies - Schedule of Accrued Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Accrued capital expenditures	$ 2,151	$ 10,511
Accrued lease operating expense	732	786
Accrued production and other taxes	482	449
Accrued transportation and gathering	1,279	1,130
Accrued performance bonus	937	3,869
Accrued interest	2	244
Accrued office lease	671	696
Accrued reorganization costs	418	168
Accrued general and administrative expense and other	249	222
Total Accrued liabilities	$ 6,921	$ 18,075