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Summary of Significant Accounting Policies (Policies)
 3 Months Ended
Mar. 31, 2014
Accounting Policies [Abstract]  
Basis of Accounting, Policy [Policy Text Block]
Basis of Presentation
The accompanying unaudited condensed consolidated financial statements and condensed footnotes have been prepared in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring items) considered necessary for fair financial statement presentation have been included. The results of operations for the three months ended March 31, 2014 are not necessarily indicative of the results to be expected for the year ended December 31, 2014 or for other interim periods or for future years. The condensed consolidated balance sheet as of December 31, 2013 is derived from audited financial statements as of that date, however, does not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in the Company’s Form 10-K for the year ended December 31, 2013, which was filed with the Securities and Exchange Commission on February 28, 2014.
Principles of Consolidation
Principles of Consolidation
 
The condensed consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles, or GAAP, and include our accounts and the accounts of our wholly-owned subsidiaries. All significant intercompany transactions and balances have been eliminated upon consolidation.
Use of Estimates
Use of Estimates
 
The preparation of consolidated financial statements in conformity with GAAP requires management to make certain estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements, as well as reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Concentration of Credit Risk and Significant Customers
Concentration of Credit Risk and Significant Customers
 
Financial instruments potentially exposing us to credit risk consist primarily of cash equivalents, investments and accounts receivable. We maintain cash, cash equivalents and investments at financial institutions that management believes to have good credit ratings and represent minimal risk of loss of principal. We invest in securities issued by financial-sector firms with a minimum rating of A by Standard & Poor's and A2 by Moody's and securities issued by non-financial sector firms with a minimum rating of BBB by Standard & Poor's and Baa1 by Moody's. 
Credit risk arising from accounts receivable is mitigated due to our large number of customers and their dispersion across various industries and geographies. As of March 31, 2014 and December 31, 2013, there were no customers that represented more than 10% of our accounts receivable balance. During the three months ended March 31, 2014 and 2013, there were no customers that individually exceeded 10% of our revenues.
 
We review the composition of the accounts receivable balance, historical write-off experience and the potential risk of loss associated with delinquent accounts to determine if an allowance for doubtful accounts is necessary. Individual accounts receivable are written off when we become aware of a specific customer’s inability to meet its financial obligation and all collection efforts are exhausted. As of March 31, 2014 and December 31, 2013, the allowance for doubtful accounts was $1.3 million and $1.1 million, res
Warranties and Indemnification
Warranties and Indemnification 

Our cloud-based service to automate enterprise IT operations is typically warranted to perform in material conformance with specifications. 

We include service level commitments to our customers that permit those customers to receive credits in the event we fail to meet those levels. We establish an accrual based on historical credits paid and an evaluation of the performance of our services, including an assessment of the impact of any known service disruptions. Service level credit accrual charges are recorded against revenue. As of March 31, 2014 and December 31, 2013, the service level credit accrual was $0.7 million and $0.6 million, respectively.

We have also agreed to indemnify our directors and executive officers for costs associated with any fees, expenses, judgments, fines and settlement amounts incurred by any of these persons in any action or proceeding to which any of those persons is, or is threatened to be, made a party by reason of the person’s service as a director or officer, including any action by us, arising out of that person’s services as a director or officer of our company or that person’s services provided to any other company or enterprise at our request. We maintain director and officer insurance coverage that may enable us to recover a portion of any future amounts paid.

Our arrangements include provisions indemnifying customers against intellectual property and other third-party claims. We have not incurred any costs as a result of such indemnifications and have not recorded any liabilities related to such obligations in the condensed consolidated financial statements.