Accounts Payable and Accrued Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Summary of accounts payable and accrued liabilities
Accounts payable	$ 1,530	$ 2,151
Oil and gas revenue payable to oil and gas property owners	686	1,307
Production taxes payable	148	165
Drilling advances received from joint venture partner	2,473	740
Accrued drilling costs	198	162
Accrued lease operating costs	58	42
Accrued ad valorem taxes	1,101	681
Accrued general and administrative expenses	902	1,146
Other accrued liabilities	222	211
Total accounts payable and accrued liabilities	$ 7,318	$ 6,605