Accounting Policies	3 Months Ended
Mar. 31, 2015
Accounting Policies [Abstract]
Accounting Policies	Note 2. ACCOUNTING POLICIES The significant accounting policies used in preparation of these condensed consolidated financial statements for the three months ended March 31, 2015 are consistent with those discussed in Note 2 to the consolidated financial statements in our 2014 Annual Report, except for our significant accounting policies related to marketable securities. During the three months ended March 31, 2015, we purchased marketable debt securities, which are classified as available-for-sale and carried at fair value in the accompanying condensed consolidated balance sheets. We have classified our investments with maturities beyond one year as short-term, based on their highly liquid nature and because such marketable securities represent the investment of cash that is available for current operations. Unrealized holding gains and losses are deferred within accumulated other comprehensive income (“AOCI”), net of applicable taxes, except for when an impairment is determined to be other-than-temporary or the security is divested prior to maturity. Interest earned and realized gains and losses on the sale of our marketable securities are included in interest income and other income and expense, respectively, in the accompanying condensed consolidated statements of operations. We perform ongoing reviews to evaluate whether an unrealized loss on an investment represents an other-than-temporary impairment. An unrealized loss exists when the fair value of an investment is less than its amortized cost. When determining whether an impairment is other-than-temporary, we consider the duration and extent to which the fair value of the investment has been below its cost, the financial condition and near-term prospects of the issuer as expressed by the security’s credit rating and rating outlook, and whether a credit event has occurred, including the failure of the issuer to make scheduled interest or principal payments. Should we intend to sell or would more likely than not be required to sell the security before the expected recovery of the amortized cost basis, we consider the loss to be other-than-temporary and charge income in the period such determination is made. For debt securities that we have no intent to sell and believe that it more likely than not that we will not be required to sell prior to recovery, only the credit loss component of the impairment is charged to income, while any remaining loss remains recognized in AOCI. The credit loss component is identified as the difference between the present value of expected cash flows expected to be collected and the amortized cost of the investment. New Accounting Pronouncements Not Yet Adopted In May 2014, the Financial Accounting Standards Board (“FASB”) issued an amendment which will replace most of the existing revenue recognition guidance within U.S. GAAP. The core principle of this guidance is that an entity should recognize revenue for the transfer of goods or services to customers in an amount that it expects to be entitled to receive for those goods or services. In doing so, companies will be required to make certain judgments and estimates, including identifying contract performance obligations, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price among separate performance obligations. Additionally, the amendment requires disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, significant judgments reached in the application of the guidance and assets recognized from the costs to obtain or fulfill a contract. Effective for the Company beginning on January 1, 2017, the amendment allows for two methods of adoption, a full retrospective method or a modified retrospective approach with the cumulative effect recognized at the date of initial application. In April 2015, the FASB proposed a one year deferral of the effective date of this standard to annual periods ending after December 15, 2017, along with an option to permit the Company to early adopt the standard beginning on January 1, 2017. The proposed effective date deferral is not current approved. We are in the process of determining the method of adoption and the impact of this amendment on our consolidated financial statements. In August 2014, the FASB issued an amendment that requires management to assess an entity’s ability to continue as a going concern by incorporating and expanding upon certain principles that are currently in U.S. auditing standards. The amendments in this update provide guidance about management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern for one year after the date that the financial statements are issued and to provide related footnote disclosures. In doing so, the amendments should reduce diversity in the timing and content of footnote disclosures. The amendments in this update apply to all entities and are effective for the annual period ending after December 15, 2016, and for annual periods and interim periods thereafter. Early application is permitted. This amendment is not expected to have a material impact on our financial statements. In February 2015, FASB issued amendments which change the analysis that a reporting entity must perform to determine whether it should consolidate certain types of legal entities, placing more emphasis on risk of loss when determining a controlling financial interest. The amendments in this update apply to all entities and are effective for the annual period ending after December 15, 2016, and for annual periods and interim periods thereafter. Early application is permitted. This amendment is not expected to have a material impact on our financial statements. In April 2015, the FASB issued amendments that require that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. Under current guidance, our debt issuance costs are reflected as a deferred charge, within other current assets, net and other long-term assets, net on our condensed consolidated balance sheets. This update is effective for the annual reporting periods beginning after December 15, 2015. This amendment is not expected to have a material impact on our financial statements.

Note 2. ACCOUNTING POLICIES

The significant accounting policies used in preparation of these condensed consolidated financial statements for the three months ended March 31, 2015 are consistent with those discussed in Note 2 to the consolidated financial statements in our 2014 Annual Report, except for our significant accounting policies related to marketable securities.

During the three months ended March 31, 2015, we purchased marketable debt securities, which are classified as available-for-sale and carried at fair value in the accompanying condensed consolidated balance sheets. We have classified our investments with maturities beyond one year as short-term, based on their highly liquid nature and because such marketable securities represent the investment of cash that is available for current operations. Unrealized holding gains and losses are deferred within accumulated other comprehensive income (“AOCI”), net of applicable taxes, except for when an impairment is determined to be other-than-temporary or the security is divested prior to maturity. Interest earned and realized gains and losses on the sale of our marketable securities are included in interest income and other income and expense, respectively, in the accompanying condensed consolidated statements of operations.

We perform ongoing reviews to evaluate whether an unrealized loss on an investment represents an other-than-temporary impairment. An unrealized loss exists when the fair value of an investment is less than its amortized cost. When determining whether an impairment is other-than-temporary, we consider the duration and extent to which the fair value of the investment has been below its cost, the financial condition and near-term prospects of the issuer as expressed by the security’s credit rating and rating outlook, and whether a credit event has occurred, including the failure of the issuer to make scheduled interest or principal payments. Should we intend to sell or would more likely than not be required to sell the security before the expected recovery of the amortized cost basis, we consider the loss to be other-than-temporary and charge income in the period such determination is made. For debt securities that we have no intent to sell and believe that it more likely than not that we will not be required to sell prior to recovery, only the credit loss component of the impairment is charged to income, while any remaining loss remains recognized in AOCI. The credit loss component is identified as the difference between the present value of expected cash flows expected to be collected and the amortized cost of the investment.

New Accounting Pronouncements Not Yet Adopted

In May 2014, the Financial Accounting Standards Board (“FASB”) issued an amendment which will replace most of the existing revenue recognition guidance within U.S. GAAP. The core principle of this guidance is that an entity should recognize revenue for the transfer of goods or services to customers in an amount that it expects to be entitled to receive for those goods or services. In doing so, companies will be required to make certain judgments and estimates, including identifying contract performance obligations, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price among separate performance obligations. Additionally, the amendment requires disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, significant judgments reached in the application of the guidance and assets recognized from the costs to obtain or fulfill a contract. Effective for the Company beginning on January 1, 2017, the amendment allows for two methods of adoption, a full retrospective method or a modified retrospective approach with the cumulative effect recognized at the date of initial application. In April 2015, the FASB proposed a one year deferral of the effective date of this standard to annual periods ending after December 15, 2017, along with an option to permit the Company to early adopt the standard beginning on January 1, 2017. The proposed effective date deferral is not current approved. We are in the process of determining the method of adoption and the impact of this amendment on our consolidated financial statements.

In August 2014, the FASB issued an amendment that requires management to assess an entity’s ability to continue as a going concern by incorporating and expanding upon certain principles that are currently in U.S. auditing standards. The amendments in this update provide guidance about management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern for one year after the date that the financial statements are issued and to provide related footnote disclosures. In doing so, the amendments should reduce diversity in the timing and content of footnote disclosures. The amendments in this update apply to all entities and are effective for the annual period ending after December 15, 2016, and for annual periods and interim periods thereafter. Early application is permitted. This amendment is not expected to have a material impact on our financial statements.

In February 2015, FASB issued amendments which change the analysis that a reporting entity must perform to determine whether it should consolidate certain types of legal entities, placing more emphasis on risk of loss when determining a controlling financial interest. The amendments in this update apply to all entities and are effective for the annual period ending after December 15, 2016, and for annual periods and interim periods thereafter. Early application is permitted. This amendment is not expected to have a material impact on our financial statements.

In April 2015, the FASB issued amendments that require that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. Under current guidance, our debt issuance costs are reflected as a deferred charge, within other current assets, net and other long-term assets, net on our condensed consolidated balance sheets. This update is effective for the annual reporting periods beginning after December 15, 2015. This amendment is not expected to have a material impact on our financial statements.