Litigation and Environmental Contingencies	12 Months Ended
Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Litigation and Environmental Contingencies	Litigation and Environmental Contingencies Litigation We are involved in various legal proceedings that arise from time to time in the ordinary course of doing business and believe that adequate reserves have been established for any probable losses. We do not believe that the outcome of any of these proceedings should have a significant adverse effect on our financial position, long-term results of operations or cash flows. It is possible, however, that charges related to these matters could be significant to our results or cash flows in any one accounting period. On October 4, 2014, James Huffman, a former director and CEO of CREDO Petroleum Corporation (Credo), which we acquired in 2012 and is now known as Forestar Petroleum Corporation, filed Huffman vs. Forestar Petroleum Corporation, Case Number 14CV33811, Civil Division, District Court for the City and County of Denver, Colorado. Prior to his retirement from Credo, Huffman participated in an employee compensation program under which he received overriding royalty interests (ORRI) in certain leases or wells in which Credo had an interest. Huffman claims entitlement to ORRI on nearly all North Dakota leases, none of which were assigned by Credo to Huffman prior to his retirement, and to ORRI on several Kansas and Nebraska leases. Huffman is seeking to have ORRI assigned to him. We believe Huffman’s claims are without merit and are vigorously defending the case. We are unable to estimate a possible loss or range of possible loss for this matter because of, among other factors, (i) significant unresolved questions of fact, including the time period covered by Huffman’s claims, (ii) discovery remaining to be conducted by both parties; (iii) impact of our counterclaims against Huffman, and (iv) any other factors that may have a material effect on the litigation. Environmental Environmental remediation liabilities arise from time to time in the ordinary course of doing business, and we believe we have established adequate reserves for any probable losses that we can reasonably estimate. We own 288 acres near Antioch, California, portions of which were sites of a former paper manufacturing operation that are in remediation. We have received certificates of completion on all but one 80 acre tract, a portion of which includes subsurface contamination. In 2015, we increased our reserves for environmental remediation by $689,000 due to additional testing and remediation requirements by state regulatory agencies. At year-end 2015, our accrued liability to complete remediation activities was $682,000, which is included in other accrued expenses. It is possible that remediation or monitoring activities could be required in addition to those included within our estimate, but we are unable to determine the scope, timing or extent of such activities. We have asset retirement obligations related to the abandonment and site restoration requirements that result from the acquisition, construction and development of oil and gas properties. We record the fair value of a liability for an asset retirement obligation in the period in which it is incurred and a corresponding increase in the carrying amount of the related long-lived asset. Accretion expense related to the asset retirement obligation and depletion expense related to capitalized asset retirement cost is included in cost of oil and gas producing activities on our consolidated statements of income (loss) and comprehensive income (loss). At year-end 2015, our asset retirement obligation was $1,758,000, which is included in other liabilities.

Litigation and Environmental Contingencies

Litigation

We are involved in various legal proceedings that arise from time to time in the ordinary course of doing business and believe that adequate reserves have been established for any probable losses. We do not believe that the outcome of any of these proceedings should have a significant adverse effect on our financial position, long-term results of operations or cash flows. It is possible, however, that charges related to these matters could be significant to our results or cash flows in any one accounting period.

On October 4, 2014, James Huffman, a former director and CEO of CREDO Petroleum Corporation (Credo), which we acquired in 2012 and is now known as Forestar Petroleum Corporation, filed Huffman vs. Forestar Petroleum Corporation, Case Number 14CV33811, Civil Division, District Court for the City and County of Denver, Colorado. Prior to his retirement from Credo, Huffman participated in an employee compensation program under which he received overriding royalty interests (ORRI) in certain leases or wells in which Credo had an interest. Huffman claims entitlement to ORRI on nearly all North Dakota leases, none of which were assigned by Credo to Huffman prior to his retirement, and to ORRI on several Kansas and Nebraska leases. Huffman is seeking to have ORRI assigned to him. We believe Huffman’s claims are without merit and are vigorously defending the case. We are unable to estimate a possible loss or range of possible loss for this matter because of, among other factors, (i) significant unresolved questions of fact, including the time period covered by Huffman’s claims, (ii) discovery remaining to be conducted by both parties; (iii) impact of our counterclaims against Huffman, and (iv) any other factors that may have a material effect on the litigation.

Environmental

Environmental remediation liabilities arise from time to time in the ordinary course of doing business, and we believe we have established adequate reserves for any probable losses that we can reasonably estimate. We own 288 acres near Antioch, California, portions of which were sites of a former paper manufacturing operation that are in remediation. We have received certificates of completion on all but one 80 acre tract, a portion of which includes subsurface contamination. In 2015, we increased our reserves for environmental remediation by $689,000 due to additional testing and remediation requirements by state regulatory agencies. At year-end 2015, our accrued liability to complete remediation activities was $682,000, which is included in other accrued expenses. It is possible that remediation or monitoring activities could be required in addition to those included within our estimate, but we are unable to determine the scope, timing or extent of such activities.

We have asset retirement obligations related to the abandonment and site restoration requirements that result from the acquisition, construction and development of oil and gas properties. We record the fair value of a liability for an asset retirement obligation in the period in which it is incurred and a corresponding increase in the carrying amount of the related long-lived asset. Accretion expense related to the asset retirement obligation and depletion expense related to capitalized asset retirement cost is included in cost of oil and gas producing activities on our consolidated statements of income (loss) and comprehensive income (loss). At year-end 2015, our asset retirement obligation was $1,758,000, which is included in other liabilities.