Accounting Policies	6 Months Ended
Jun. 30, 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 and six months ended June 30, 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 six months ended June 30, 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 determine that we would more likely than not be required to sell the security before the expected recovery of the amortized cost basis, we would 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 for which we believe that it is 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. In July 2015, the FASB voted to defer the effective date of the amendment to apply to public business entities for annual and interim periods ending after December 15, 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. 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, the 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. In April 2015, the FASB issued amendments that provide guidance to customers about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, then the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. The new guidance does not change the accounting for a customer’s accounting for service contracts. The standard update is effective for fiscal years beginning after December 15, 2015 and interim periods within those years. Early adoption is permitted. The standard allows for adoption retrospectively or prospectively to all arrangements entered into or materially modified after the effective date. The amendment is not expected to have a material impact on our financial statements. In May 2015, the FASB issued amendments which remove the requirement to categorize within the fair value hierarchy all investments for which fair value is measured using the net asset value as a practical expedient for fair value. Removing investments measured using the practical expedient from the fair value hierarchy is intended to eliminate the diversity in practice that currently exists with respect to the categorization of these investments. The new guidance requires reporting entities to continue to disclose information on investments for which fair value is measured at net asset value (or its equivalent) as a practical expedient to help users understand the nature and risks of the investments and whether the investments, if sold, are probable of being sold at amounts different from net asset value. A reporting entity should apply the amendments retrospectively to all periods presented. This update is effective for public business entities during fiscal years beginning after December 15, 2015. Early adoption is permitted. This amendment is not expected to have a material impact on our financial statements. In July 2015, the FASB issued amendments which simplify the existing guidance which requires entities to subsequently measure inventory at the lower of cost or market value. Under the amendments, an entity should measure inventory valued using a first-in, first-out or average cost method at the lower of cost and net realizable value, which is defined as the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. This update is effective for public business entities during fiscal years beginning after December 15, 2016. Early adoption is permitted. 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 and six months ended June 30, 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 six months ended June 30, 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 determine that we would more likely than not be required to sell the security before the expected recovery of the amortized cost basis, we would 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 for which we believe that it is 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. In July 2015, the FASB voted to defer the effective date of the amendment to apply to public business entities for annual and interim periods ending after December 15, 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. 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, the 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.

In April 2015, the FASB issued amendments that provide guidance to customers about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, then the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. The new guidance does not change the accounting for a customer’s accounting for service contracts. The standard update is effective for fiscal years beginning after December 15, 2015 and interim periods within those years. Early adoption is permitted. The standard allows for adoption retrospectively or prospectively to all arrangements entered into or materially modified after the effective date. The amendment is not expected to have a material impact on our financial statements.

In May 2015, the FASB issued amendments which remove the requirement to categorize within the fair value hierarchy all investments for which fair value is measured using the net asset value as a practical expedient for fair value. Removing investments measured using the practical expedient from the fair value hierarchy is intended to eliminate the diversity in practice that currently exists with respect to the categorization of these investments. The new guidance requires reporting entities to continue to disclose information on investments for which fair value is measured at net asset value (or its equivalent) as a practical expedient to help users understand the nature and risks of the investments and whether the investments, if sold, are probable of being sold at amounts different from net asset value. A reporting entity should apply the amendments retrospectively to all periods presented. This update is effective for public business entities during fiscal years beginning after December 15, 2015. Early adoption is permitted. This amendment is not expected to have a material impact on our financial statements.

In July 2015, the FASB issued amendments which simplify the existing guidance which requires entities to subsequently measure inventory at the lower of cost or market value. Under the amendments, an entity should measure inventory valued using a first-in, first-out or average cost method at the lower of cost and net realizable value, which is defined as the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. This update is effective for public business entities during fiscal years beginning after December 15, 2016. Early adoption is permitted. This amendment is not expected to have a material impact on our financial statements.