Business and Basis of Presentation (Policies)	9 Months Ended
Business and Basis of Presentation (Policies)	Sep. 30, 2015
Summary of Significant Accounting Policies [Abstract]
Basis of Presentation and Consolidation	(c) Basis of Presentation and Consolidation The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting. Accordingly, they do not include all of the information and notes required by GAAP for annual financial statements. In the opinion of management, all adjustments consisting of normal and recurring entries considered necessary for a fair presentation of the results for the interim periods presented have been included. All intercompany balances and transactions have been eliminated. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect reported amounts in the financial statements and accompanying notes. These estimates are based on information available as of the date of the unaudited consolidated financial statements. Therefore, actual results could differ from these estimates. Interim results are not necessarily indicative of the results for a full year. These unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and notes contained in the Company’s Annual Report on Form 10-K filed with the SEC on March 2, 2015 (the “Annual Report”). Business events in 2015 required the Company to make an addition to the accounting policies for stock-based compensation, as more fully set forth below. There have been no other changes in the significant accounting policies as disclosed in the audited consolidated financial statements for 2014 included in the Annual Report.
Stock-based Compensation	The Company granted performance-based restricted stock units (“PSUs”) to certain employees in February 2015. The fair value of PSUs is equal to the closing market price of the Company’s common stock on the date of grant. The number of PSUs that will ultimately vest will range from 0% to 170% of the target amount depending on the actual level of achievement within the specified performance bands. The performance condition will be evaluated quarterly to determine the probable level of achievement within specified performance bands as defined in the PSU agreement. The corresponding amount of stock-based compensation expense related to PSUs is amortized over a graded vesting period of three years. Changes in the quarterly estimate of probable achievement impact the total amount of stock-based compensation expense on a cumulative basis.
Recently Issued and Adopted Accounting Pronouncements	Recently Issued Accounting Guidance In May 2014, the Financial Accounting Standard Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-09, “Revenue from Contracts with Customers,” which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The new standard is effective for the Company on January 1, 2018. Early application is permitted after January 1, 2017. The standard permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the impact of this accounting guidance on its consolidated financial statements. In April 2015, the FASB issued ASU No. 2015-03, “Simplifying the Presentation of Debt Issuance Costs,” which requires that debt issuance costs be presented in the consolidated balance sheet as a direct deduction from the carrying amount of debt liability, consistent with debt discounts. This new accounting guidance is effective for the Company on January 1, 2016. The Company is evaluating the impact of adopting this new accounting guidance on its consolidated financial statements. Given the absence of authoritative guidance within ASU No. 2015-03 for debt issuance costs related to line-of-credit arrangements, in June 2015, the FASB issued ASU No. 2015-15, "Interest - Imputation of Interest (Subtopic 835-30): Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements.” This standard states that the SEC staff will not object to an entity deferring and presenting debt issuance costs as an asset and subsequently amortizing these costs. This guidance is effective for the Company on January 1, 2016, and must be applied on a retrospective basis with early adoption permitted. The Company is evaluating the impact of this accounting guidance on its consolidated financial statements. In April 2015, the FASB issued ASU No. 2015-05, "Customer's Accounting for Fees Paid in a Cloud Computing Arrangement," which provides 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 license. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. The guidance will not change U.S. GAAP for a customer's accounting for service contracts. The new standard is effective for fiscal years, and interim periods within those years, beginning after December 15, 2015, with the option of applying the guidance prospectively or retrospectively. Early adoption is permitted. The Company is evaluating the impact of this accounting guidance on its consolidated financial statements. In May 2015, the FASB issued ASU No. 2015-07, “Disclosures for Investments in Certain Entities that Calculate Net Asset Value Per Share (or its Equivalent),” which removes the requirement to categorize within the fair value hierarchy all investments for which fair values are estimated using the net asset value per share (“NAV”) provided by ASC 820, Fair Value Measurement. The ASU also removes the requirement to make certain disclosures for all investments that are eligible to be measured at fair value using NAV. Those disclosures are limited to investments for which the entity has elected to measure the fair value using that practical expedient. This ASU is effective for fiscal years, and interim periods within those years, beginning after December 15, 2015, with retrospective application to all periods presented. Early adoption is permitted. The Company elected to early adopt ASU No. 2015-07 in the second quarter of 2015. Because the Company measures money market funds using NAV, the assignment of fair value hierarchy to money market funds has been removed in all periods presented in these consolidated interim financial statements.