Accounting Policies (Policies)	3 Months Ended
Accounting Policies (Policies)	Mar. 31, 2016
Accounting Policies
General	General The interim-period financial information presented in the consolidated financial statements included in this report is unaudited and, in the opinion of management, includes all adjustments of a normal recurring nature necessary to present fairly the consolidated financial position as of March 31, 2016, the changes in the consolidated statements of shareholders’ equity for the three months ended March 31, 2016, the consolidated results of operations for the three months ended March 31, 2016 and 2015, and the consolidated cash flows for the three months ended March 31, 2016 and 2015. The results of the interim periods shown in this report are not necessarily indicative of the final results to be expected for the full year. The consolidated financial statements were prepared in accordance with the requirements of the Securities and Exchange Commission (“SEC”) for interim reporting. As permitted under those rules, certain notes or other financial information that are normally required by Generally Accepted Accounting Principles in the United States of America (“GAAP”) have been condensed or omitted from these interim consolidated financial statements. These consolidated financial statements and the accompanying notes should be read in conjunction with our audited consolidated financial statements for the year ended December 31, 2015, included in our annual report on Form 10-K.
Restricted Cash	Restricted Cash In accordance with our commercial debt facility (the “Facility”), we are required to maintain a restricted cash balance that is sufficient to meet the payment of interest and fees for the next six-month period on the 7.875% Senior Secured Notes due 2021 (“Senior Notes”) plus the Corporate Revolver or the Facility, whichever is greater. As of March 31, 2016 and December 31, 2015, we had $24.4 million in current restricted cash to meet this requirement. In addition, in accordance with certain of our petroleum contracts, we have posted letters of credit related to performance guarantees for our minimum work obligations. These letters of credit are cash collateralized in accounts held by us and as such are classified as restricted cash. Upon completion of the minimum work obligations and/or entering into the next phase of the petroleum contract, the requirement to post the existing letters of credit will be satisfied and the cash collateral will be released. However, additional letters of credit may be required should we choose to move into the next phase of certain of our petroleum contracts. As of March 31, 2016 and December 31, 2015, we had $4.2 million and $4.1 million, respectively, of short-term restricted cash and $7.3 million of long-term restricted cash used to collateralize performance guarantees related to our petroleum contracts.
Inventories	Inventories Inventories consisted of $67.1 million and $84.4 million of materials and supplies and $0.1 million and $0.8 million of hydrocarbons as of March 31, 2016 and December 31, 2015, respectively. The Company’s materials and supplies inventory primarily consists of casing and wellheads and is stated at the lower of cost, using the weighted average cost method, or net realizable value. We recorded a write down of $15.7 million during the first quarter of 2016 for materials and supplies inventories as other expenses, net in the consolidated statement of operations and other in the consolidated statement of cash flows. Hydrocarbon inventory is carried at the lower of cost, using the weighted average cost method, or net realizable value. Hydrocarbon inventory costs include expenditures and other charges incurred in bringing the inventory to its existing condition. Selling expenses and general and administrative expenses are reported as period costs and excluded from inventory costs.
Recent Accounting Standards	Recent Accounting Standards In July 2015, the FASB issued ASU 2015-11, “Inventory (Topic 330) — Simplifying the Measurement of Inventory.” ASU 2015-11 changes the measurement principle for entities that do not measure inventory using the last-in, first-out (LIFO) or retail inventory method from the lower of cost or market to lower of cost and net realizable value. The ASU also eliminates the requirement for these entities to consider replacement cost or net realizable value less an approximately normal profit margin when measuring inventory. The standard requires prospective application upon adoption. The Company has elected to early adopt ASU 2015-11 during the first quarter of 2016. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842).” ASU 2016-02 was issued to increase transparency and comparability across organizations by recognizing substantially all leases on the balance sheet through the concept of right-of-use lease assets and liabilities. Under current accounting guidance, lessees do not recognize lease assets or liabilities for leases classified as operating leases. The ASU is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years with early adoption permitted. The Company is in the process of evaluating the impact of this accounting standard on its consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, “Compensation — Stock Compensation (Topic 816).” ASU 2016-09 simplifies several aspects of accounting for share-based compensation including the tax consequences, classification of awards as equity or liabilities, forfeitures and classification on the statement of cash flows. The ASU is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years with early adoption permitted. The Company plans to early adopt this standard during the second quarter of 2016. The adoption of this standard will result in all excess tax benefits and shortfalls being recognized as tax expense or benefit in the reporting period they occur regardless of whether the benefit reduces taxes payable in the current period. Excess tax benefits will be classified along with other income tax as an operating activity and cash paid by the Company when directly withholding shares for tax withholding purposes will be classified as a financing activity. The Company is in the process of evaluating the impact of this accounting standard on its consolidated financial statements.

Disclosure of accounting policy for major classes of inventories, bases of stating inventories (for example, lower of cost or market), methods by which amounts are added and removed from inventory classes (for example, FIFO, LIFO, or average cost), loss recognition on impairment of inventories, and situations in which inventories are stated above cost. If inventory is carried at cost, this disclosure includes the nature of the cost elements included in inventory.