Basis of Presentation	3 Months Ended
Mar. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation (a) The Company and Nature of Operations FalconStor Software, Inc., a Delaware Corporation (the "Company"), develops, manufactures and sells data migration, business continuity, disaster recovery, optimized backup and de-duplication solutions and provides the related maintenance, implementation and engineering services. (b) Principles of Consolidation The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation. (c) Use of Estimates The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The Company’s significant estimates include those related to revenue recognition, accounts receivable allowances, share-based payment compensation, marketable securities, valuation of embedded derivatives, software development costs, goodwill and other intangible assets and income taxes. Actual results could differ from those estimates. The financial market volatility in many countries where the Company operates has impacted and may continue to impact the Company’s business. Such conditions could have a material impact to the Company’s significant accounting estimates discussed above. (d) Unaudited Interim Financial Information The accompanying unaudited interim condensed consolidated financial statements have been prepared, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and note disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted pursuant to such rules and regulations relating to interim financial statements. In the opinion of management, the accompanying unaudited interim condensed consolidated financial statements reflect all adjustments, consisting only of normal recurring adjustments, necessary to present fairly the financial position of the Company at March 31, 2014, and the results of its operations for the three months ended March 31, 2014 and 2013. The results of operations of any interim period are not necessarily indicative of the results of operations to be expected for the full fiscal year. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2013 ("2013 Form 10-K"). (e) Reclassifications Certain reclassifications were made to the prior period amounts to conform to the current period presentation. (f) Recently Adopted Accounting Pronouncements In July 2013, the FASB issued new guidance which requires the netting of an unrecognized tax benefit, or a portion of an unrecognized tax benefit, against a deferred tax asset for a net operating loss carry forward, a similar tax loss, or a tax credit carry forward if such settlement is required or expected in the event the uncertain tax position is disallowed. The new guidance is effective prospectively to all existing unrecognized tax benefits, but entities can choose to apply it retrospectively. The adoption of this new accounting guidance in the first quarter of 2014 did not have any impact on the Company's consolidated financial position, results of operations or cash flows. (g) Recently Issued Accounting Pronouncements On May 14, 2013, the Committee of Sponsoring Organizations of the Treadway Commission (COSO) issued its updated Internal Control - Integrated Framework (the 2013 Framework) and related illustrative documents. COSO will continue to make available its original Framework during the transition period extending to December 15, 2014. The Company currently utilizes COSO’s original Framework, which was published in 1992 and is recognized as the leading guidance for designing, implementing and conducting internal controls over external financial reporting and assessing its effectiveness. The 2013 Framework is expected to help organizations design and implement internal control in light of many changes in business and operating environments since the issuance of the original Framework, broaden the application of internal control in addressing operations and reporting objectives, and clarify the requirements for determining what constitutes effective internal control. The Company plans to adopt the 2013 Framework during 2014 and does not expect that it will have a significant impact on the Company.

Basis of Presentation

(a) The Company and Nature of Operations

FalconStor Software, Inc., a Delaware Corporation (the "Company"), develops, manufactures and sells data migration, business continuity, disaster recovery, optimized backup and de-duplication solutions and provides the related maintenance, implementation and engineering services.

(b) Principles of Consolidation

The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation.

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The Company’s significant estimates include those related to revenue recognition, accounts receivable allowances, share-based payment compensation, marketable securities, valuation of embedded derivatives, software development costs, goodwill and other intangible assets and income taxes. Actual results could differ from those estimates.

The financial market volatility in many countries where the Company operates has impacted and may continue to impact the Company’s business. Such conditions could have a material impact to the Company’s significant accounting estimates discussed above.

(d) Unaudited Interim Financial Information

The accompanying unaudited interim condensed consolidated financial statements have been prepared, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and note disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted pursuant to such rules and regulations relating to interim financial statements.

In the opinion of management, the accompanying unaudited interim condensed consolidated financial statements reflect all adjustments, consisting only of normal recurring adjustments, necessary to present fairly the financial position of the Company at March 31, 2014, and the results of its operations for the three months ended March 31, 2014 and 2013. The results of operations of any interim period are not necessarily indicative of the results of operations to be expected for the full fiscal year. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes set forth in the Company's Annual Report on Form 10-K for the year ended December 31, 2013 ("2013 Form 10-K").

(e) Reclassifications

Certain reclassifications were made to the prior period amounts to conform to the current period presentation.

(f) Recently Adopted Accounting Pronouncements

In July 2013, the FASB issued new guidance which requires the netting of an unrecognized tax benefit, or a portion of an unrecognized tax benefit, against a deferred tax asset for a net operating loss carry forward, a similar tax loss, or a tax credit carry forward if such settlement is required or expected in the event the uncertain tax position is disallowed. The new guidance is effective prospectively to all existing unrecognized tax benefits, but entities can choose to apply it retrospectively. The adoption of this new accounting guidance in the first quarter of 2014 did not have any impact on the Company's consolidated financial position, results of operations or cash flows.

(g) Recently Issued Accounting Pronouncements

On May 14, 2013, the Committee of Sponsoring Organizations of the Treadway Commission (COSO) issued its updated Internal Control - Integrated Framework (the 2013 Framework) and related illustrative documents. COSO will continue to make available its original Framework during the transition period extending to December 15, 2014. The Company currently utilizes COSO’s original Framework, which was published in 1992 and is recognized as the leading guidance for designing, implementing and conducting internal controls over external financial reporting and assessing its effectiveness. The 2013 Framework is expected to help organizations design and implement internal control in light of many changes in business and operating environments since the issuance of the original Framework, broaden the application of internal control in addressing operations and reporting objectives, and clarify the requirements for determining what constitutes effective internal control. The Company plans to adopt the 2013 Framework during 2014 and does not expect that it will have a significant impact on the Company.