Significant Accounting Policies (Policies)	9 Months Ended
Sep. 30, 2013
Principles of Accounting for Ownership Interests	Principles of Accounting for Ownership Interests The various interests that ICG acquires in its businesses are accounted for under one of three methods: the consolidation method, the equity method and the cost method. The applicable accounting method is generally determined based on ICG’s voting interest in a company.
Consolidation	Consolidation. Businesses in which (1) ICG directly or indirectly owns more than 50% of the outstanding voting securities, and (2) other stockholders do not possess the right to affect significant management decisions are generally accounted for under the consolidation method of accounting. Participation of other stockholders in the net assets and in the earnings or losses of a consolidated subsidiary is reflected in the line items “Noncontrolling Interest” in ICG’s Consolidated Balance Sheets and “Net income attributable to the noncontrolling interest” in ICG’s Consolidated Statements of Operations. Noncontrolling interest adjusts ICG’s consolidated results of operations to reflect only ICG’s share of the earnings or losses of the consolidated subsidiary. Any changes in ICG’s ownership interest in a consolidated subsidiary, through additional equity issuances by the consolidated subsidiary or through ICG acquiring the shares from existing shareholders, in which ICG maintains control is recognized as an equity transaction, with appropriate adjustments to both ICG’s additional paid-in capital and the corresponding noncontrolling interests. The difference between the carrying amount of ICG’s ownership interest in the company and the underlying net book value of the company after the issuance of stock by the company is reflected as an equity transaction in ICG’s Consolidated Statements of Changes in Equity. An increase in ICG’s ownership interest in a business accounted for under the equity or cost method of accounting in which ICG obtains a controlling financial interest is accounted for as a step acquisition, with an allocation of the purchase price to the fair value of the net assets acquired. In addition, ICG remeasures its previously held ownership interest in a business that was previously not consolidated at the acquisition date fair value; any gain or loss resulting from this remeasurement is recognized in ICG’s Consolidated Statements of Operations at that time. ICG begins to include the financial position and operating results of the newly-consolidated subsidiary in its Consolidated Financial Statements from the date ICG obtains the controlling financial interest in that subsidiary. If control is lost, any retained interest is measured at fair value, and a gain or loss is recognized in ICG’s Consolidated Statements of Operations at that time. In addition, to the extent ICG maintains a smaller equity ownership, the accounting method used for that business is adjusted to the equity or cost method of accounting, as appropriate, for subsequent periods.
Equity Method	Equity Method. Businesses that are not consolidated, but over which ICG exercises significant influence, are accounted for under the equity method of accounting and are referred to in the Notes to Consolidated Financial Statements as “equity method businesses.” The determination as to whether or not ICG exercises significant influence with respect to a company depends on an evaluation of several factors, including, among others, representation on the company’s board of directors and equity ownership level, which is generally between a 20% and a 50% interest in the voting securities of an equity method business, as well as voting rights associated with ICG’s holdings in common stock, preferred stock and other convertible instruments in that company. ICG’s share of the earnings and/or losses of the company, as well as any adjustments resulting from prior period finalizations of equity income/losses, are reflected in the line item “Equity loss” in ICG’s Consolidated Statements of Operations. An increase in ICG’s ownership interest in an equity method business over which ICG maintains significant influence is accounted for as a step acquisition, with an allocation of the excess purchase price to the fair value of the net assets acquired. A decrease in ICG’s ownership interest in an equity method business over which ICG maintains significant influence is accounted for as a dilution gain or loss in ICG’s Consolidated Statements of Operations and reflects the difference between ICG’s share of the underlying net assets of that company prior to the relevant change in ownership and ICG’s share of the underlying net assets of that company subsequent to the relevant change in ownership.
Cost Method	Cost Method. Businesses not accounted for under either the consolidation method or equity method of accounting are accounted for under the cost method of accounting and are referred to in these Notes to Consolidated Financial Statements as “cost method businesses.” ICG’s share of the earnings and/or losses of cost method businesses is not included in ICG’s Consolidated Statement of Operations. However, impairment charges related to cost method businesses are recognized in ICG’s Consolidated Statements of Operations. If circumstances suggest that the value of a cost method business with respect to which an impairment charge has been made has subsequently recovered, that recovery is not recorded. The carrying values of ICG’s cost method businesses are reflected in the line item “Equity and cost method investments” in ICG’s Consolidated Balance Sheets. ICG initially records its carrying value in businesses accounted for under the cost method at cost, unless the equity securities of a cost method business have readily determinable fair values based on quoted market prices, in which case the interests are valued at fair value and are classified as marketable securities or some other classification in accordance with guidance for ownership interests in debt and equity securities.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ materially from those estimates. Those estimates include evaluation of ICG’s convertible debt and equity holdings in businesses, holdings in marketable securities, asset impairment, revenue recognition, income taxes and commitments and contingencies. Those estimates and assumptions are based on management’s best judgments. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, such as the current economic environment, that management believes to be reasonable under the circumstances. Management adjusts those estimates and assumptions when facts and circumstances dictate that it is necessary or appropriate to do so. It is reasonably possible that ICG’s accounting estimates with respect to the ultimate recoverability of ICG’s ownership interests in convertible debt and equity holdings, goodwill and the useful lives of intangible assets could change in the near term and that the effect of such changes on ICG’s consolidated financial statements could be material. Management believes the recorded amounts of goodwill, intangible assets, equity method businesses and cost method businesses were not impaired as of September 30, 2013.
Goodwill, Intangible assets, net, Equity Method Businesses and Cost Method Businesses	Goodwill, Intangible assets, net, Equity Method Businesses and Cost Method Businesses ICG evaluates its carrying value in equity method businesses and cost method businesses continuously to determine whether an other-than-temporary decline in the fair value of any such business exists and should be recognized. In order to make that determination, ICG considers each such business’ achievement of its business plan objectives and milestones, the fair value of its ownership interest in each such business (which, in the case of any company listed on a public stock exchange, is the quoted stock price of the relevant ownership interest), the financial condition and prospects of each such business, and other relevant factors. The business plan objectives and milestones ICG considers include, among others, those related to financial performance, such as achievement of planned financial results or completion of capital raising activities, and those that are not primarily financial in nature, such as obtaining key business partnerships or the hiring of key employees. Impairment charges are determined by comparing ICG’s carrying value of a business with its estimated fair value. Fair value is determined by using a combination of estimating the cash flows related to the relevant asset, including estimated proceeds on disposition, and an analysis of market price multiples of companies engaged in lines of business similar to the company being evaluated. ICG concluded that the carrying value of its equity method businesses and cost method businesses was not impaired as of September 30, 2013 and December 31, 2012. ICG tests goodwill for impairment annually during the fourth quarter of each year, or more frequently as conditions warrant, and tests intangible assets for impairment when events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. ICG concluded that its goodwill and intangible assets were not impaired as of September 30, 2013 and December 31, 2012.
Revenue Recognition	Revenue Recognition During the three and nine months ended September 30, 2013, ICG’s consolidated revenue was primarily attributable to Bolt, GovDelivery and MSDSonline. During the three and nine months ended September 30, 2012, ICG’s consolidated revenue was primarily attributable to GovDelivery and MSDSonline. MSDSonline was acquired on March 30, 2012; because the business’ results of operations for the two-day period from March 30, 2012 through March 31, 2012 were immaterial to ICG, revenue related to MSDSonline is included in ICG’s consolidated revenue beginning on April 1, 2012. Bolt generates revenue from (1) software licenses, (2) maintenance and support services, (3) professional service fees and (4) insurance commissions. Bolt’s software license revenue derives from licenses of its software products directly to end users and is recognized when persuasive evidence of an arrangement exists, delivery of the product has occurred, no significant obligations with regard to implementation remain, the fee is fixed or determinable and collectability is probable; Bolt’s software license revenue is recognized ratably over the applicable contract term. Bolt’s maintenance and customer support fees are recognized ratably over the life of maintenance and support contracts, which is typically one year. Bolt’s professional service fees revenue relates to professional services for software licenses that require significant customization, integration and installation; that revenue is recognized ratably over the applicable contract term. Finally, Bolt’s commissions on the premiums from sales of insurance policies are recognized when Bolt has sufficient information to determine the amount that is owed, it is probable that the economic benefits associated with the transaction will flow to Bolt, and the costs incurred, or to be incurred, with respect to the transaction can be accurately measured. GovDelivery revenue consists of (1) nonrefundable setup fees and (2) monthly maintenance and hosting fees. Those fees generally are deferred and recognized as the services are performed, which is typically over the service term. Costs related to performing setup services are expensed as incurred. MSDSonline derives revenue from three sources: (1) subscription fees, (2) professional services fees and (3) compliance solutions project fees. The vast majority of MSDSonline’s revenue is derived from subscription fees from customers accessing the business’ database and web-based tools; that revenue is recognized ratably over the applicable contract term, beginning on the contract implementation date. MSDSonline also generates (a) professional services fees from authoring and/or compiling its customers’ online libraries of material safety data sheet documents and indexing those documents for the customers’ use and (b) fees from training and compliance services projects; the revenue derived from those fees is recognized on a percentage of completion basis over the applicable project’s timeline.
Net Income (Loss) Per Share	Net Income (Loss) Per Share Basic net income (loss) per share (EPS) is computed using the weighted average number of common shares outstanding during a given period. Diluted EPS includes shares, unless anti-dilutive, that would arise from the exercise of stock options and conversion of other convertible securities and is adjusted, if applicable, for the effect on net income (loss) of such transactions. See Note 13, “Net Income (Loss) per Share.”
Escrow Information	Escrow Information When an interest in one of ICG’s businesses is sold, a portion of the sale consideration may be held in escrow primarily to satisfy purchase price adjustments and/or indemnity claims. ICG records gains on escrowed proceeds at the time ICG is entitled to receive such proceeds, the amount is fixed or determinable and realization is assured. As of September 30, 2013, the following amounts related to ICG’s potential proceeds from sales of former consolidated subsidiaries and equity method businesses remained in escrow to satisfy potential or ongoing indemnification claims: (1) $7.9 million of cash related to the sales of InvestorForce and Channel Intelligence, and (2) 11,650 shares of common stock for The Active Network, Inc. (NYSE: ACTV) (“Active”), valued at $0.2 million (based on the stock’s September 30, 2013 closing price) related to the sale of StarCite, Inc. (“StarCite”). Those outstanding escrows are scheduled to be released at various dates within the next two years, subject to pending and potential indemnity claims pursuant to the terms of the specific sales agreements.
Concentration of Customer Base and Credit Risk	Concentration of Customer Base and Credit Risk For both the three and nine months ended September 30, 2013 and 2012, none of the customers of ICG’s businesses represented more than 10% of ICG’s consolidated revenue.
Commitments and Contingencies	Commitments and Contingencies From time to time, ICG and its businesses are involved in various claims and legal actions arising in the ordinary course of business. ICG does not expect any liability with respect to any legal claims or actions that would materially affect its consolidated financial position or cash flows.
Reclassifications	Reclassifications Certain amounts in the prior year financial statements have been reclassified to conform to the current-year presentation. The impact of the reclassifications made to prior year amounts is not material and did not affect net income (loss).
Discontinued Operations	Discontinued Operations During the nine months ended September 30, 2013, InvestorForce and Channel Intelligence (a former subsidiary of CIML) were sold. Additionally, on October 2, 2013, ICG executed a definitive merger agreement for the sale of Procurian to Accenture. Accordingly, ICG has recast all financial information within this Report to conform to the current period presentation and to present those three businesses as discontinued operations retrospectively for all periods presented.

Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2013

Principles of Accounting for Ownership Interests

The various interests that ICG acquires in its businesses are accounted for under one of three methods: the consolidation method, the equity method and the cost method. The applicable accounting method is generally determined based on ICG’s voting interest in a company.

Consolidation

Consolidation. Businesses in which (1) ICG directly or indirectly owns more than 50% of the outstanding voting securities, and (2) other stockholders do not possess the right to affect significant management decisions are generally accounted for under the consolidation method of accounting. Participation of other stockholders in the net assets and in the earnings or losses of a consolidated subsidiary is reflected in the line items “Noncontrolling Interest” in ICG’s Consolidated Balance Sheets and “Net income attributable to the noncontrolling interest” in ICG’s Consolidated Statements of Operations. Noncontrolling interest adjusts ICG’s consolidated results of operations to reflect only ICG’s share of the earnings or losses of the consolidated subsidiary.

Any changes in ICG’s ownership interest in a consolidated subsidiary, through additional equity issuances by the consolidated subsidiary or through ICG acquiring the shares from existing shareholders, in which ICG maintains control is recognized as an equity transaction, with appropriate adjustments to both ICG’s additional paid-in capital and the corresponding noncontrolling interests. The difference between the carrying amount of ICG’s ownership interest in the company and the underlying net book value of the company after the issuance of stock by the company is reflected as an equity transaction in ICG’s Consolidated Statements of Changes in Equity.

An increase in ICG’s ownership interest in a business accounted for under the equity or cost method of accounting in which ICG obtains a controlling financial interest is accounted for as a step acquisition, with an allocation of the purchase price to the fair value of the net assets acquired. In addition, ICG remeasures its previously held ownership interest in a business that was previously not consolidated at the acquisition date fair value; any gain or loss resulting from this remeasurement is recognized in ICG’s Consolidated Statements of Operations at that time. ICG begins to include the financial position and operating results of the newly-consolidated subsidiary in its Consolidated Financial Statements from the date ICG obtains the controlling financial interest in that subsidiary. If control is lost, any retained interest is measured at fair value, and a gain or loss is recognized in ICG’s Consolidated Statements of Operations at that time. In addition, to the extent ICG maintains a smaller equity ownership, the accounting method used for that business is adjusted to the equity or cost method of accounting, as appropriate, for subsequent periods.

Equity Method

Equity Method. Businesses that are not consolidated, but over which ICG exercises significant influence, are accounted for under the equity method of accounting and are referred to in the Notes to Consolidated Financial Statements as “equity method businesses.” The determination as to whether or not ICG exercises significant influence with respect to a company depends on an evaluation of several factors, including, among others, representation on the company’s board of directors and equity ownership level, which is generally between a 20% and a 50% interest in the voting securities of an equity method business, as well as voting rights associated with ICG’s holdings in common stock, preferred stock and other convertible instruments in that company. ICG’s share of the earnings and/or losses of the company, as well as any adjustments resulting from prior period finalizations of equity income/losses, are reflected in the line item “Equity loss” in ICG’s Consolidated Statements of Operations.

An increase in ICG’s ownership interest in an equity method business over which ICG maintains significant influence is accounted for as a step acquisition, with an allocation of the excess purchase price to the fair value of the net assets acquired. A decrease in ICG’s ownership interest in an equity method business over which ICG maintains significant influence is accounted for as a dilution gain or loss in ICG’s Consolidated Statements of Operations and reflects the difference between ICG’s share of the underlying net assets of that company prior to the relevant change in ownership and ICG’s share of the underlying net assets of that company subsequent to the relevant change in ownership.

Cost Method

Cost Method. Businesses not accounted for under either the consolidation method or equity method of accounting are accounted for under the cost method of accounting and are referred to in these Notes to Consolidated Financial Statements as “cost method businesses.” ICG’s share of the earnings and/or losses of cost method businesses is not included in ICG’s Consolidated Statement of Operations. However, impairment charges related to cost method businesses are recognized in ICG’s Consolidated Statements of Operations. If circumstances suggest that the value of a cost method business with respect to which an impairment charge has been made has subsequently recovered, that recovery is not recorded. The carrying values of ICG’s cost method businesses are reflected in the line item “Equity and cost method investments” in ICG’s Consolidated Balance Sheets.

ICG initially records its carrying value in businesses accounted for under the cost method at cost, unless the equity securities of a cost method business have readily determinable fair values based on quoted market prices, in which case the interests are valued at fair value and are classified as marketable securities or some other classification in accordance with guidance for ownership interests in debt and equity securities.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ materially from those estimates. Those estimates include evaluation of ICG’s convertible debt and equity holdings in businesses, holdings in marketable securities, asset impairment, revenue recognition, income taxes and commitments and contingencies. Those estimates and assumptions are based on management’s best judgments. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, such as the current economic environment, that management believes to be reasonable under the circumstances. Management adjusts those estimates and assumptions when facts and circumstances dictate that it is necessary or appropriate to do so. It is reasonably possible that ICG’s accounting estimates with respect to the ultimate recoverability of ICG’s ownership interests in convertible debt and equity holdings, goodwill and the useful lives of intangible assets could change in the near term and that the effect of such changes on ICG’s consolidated financial statements could be material. Management believes the recorded amounts of goodwill, intangible assets, equity method businesses and cost method businesses were not impaired as of September 30, 2013.

Goodwill, Intangible assets, net, Equity Method Businesses and Cost Method Businesses

ICG evaluates its carrying value in equity method businesses and cost method businesses continuously to determine whether an other-than-temporary decline in the fair value of any such business exists and should be recognized. In order to make that determination, ICG considers each such business’ achievement of its business plan objectives and milestones, the fair value of its ownership interest in each such business (which, in the case of any company listed on a public stock exchange, is the quoted stock price of the relevant ownership interest), the financial condition and prospects of each such business, and other relevant factors. The business plan objectives and milestones ICG considers include, among others, those related to financial performance, such as achievement of planned financial results or completion of capital raising activities, and those that are not primarily financial in nature, such as obtaining key business partnerships or the hiring of key employees. Impairment charges are determined by comparing ICG’s carrying value of a business with its estimated fair value. Fair value is determined by using a combination of estimating the cash flows related to the relevant asset, including estimated proceeds on disposition, and an analysis of market price multiples of companies engaged in lines of business similar to the company being evaluated. ICG concluded that the carrying value of its equity method businesses and cost method businesses was not impaired as of September 30, 2013 and December 31, 2012.

ICG tests goodwill for impairment annually during the fourth quarter of each year, or more frequently as conditions warrant, and tests intangible assets for impairment when events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. ICG concluded that its goodwill and intangible assets were not impaired as of September 30, 2013 and December 31, 2012.

Revenue Recognition

During the three and nine months ended September 30, 2013, ICG’s consolidated revenue was primarily attributable to Bolt, GovDelivery and MSDSonline. During the three and nine months ended September 30, 2012, ICG’s consolidated revenue was primarily attributable to GovDelivery and MSDSonline. MSDSonline was acquired on March 30, 2012; because the business’ results of operations for the two-day period from March 30, 2012 through March 31, 2012 were immaterial to ICG, revenue related to MSDSonline is included in ICG’s consolidated revenue beginning on April 1, 2012.

Bolt generates revenue from (1) software licenses, (2) maintenance and support services, (3) professional service fees and (4) insurance commissions. Bolt’s software license revenue derives from licenses of its software products directly to end users and is recognized when persuasive evidence of an arrangement exists, delivery of the product has occurred, no significant obligations with regard to implementation remain, the fee is fixed or determinable and collectability is probable; Bolt’s software license revenue is recognized ratably over the applicable contract term. Bolt’s maintenance and customer support fees are recognized ratably over the life of maintenance and support contracts, which is typically one year. Bolt’s professional service fees revenue relates to professional services for software licenses that require significant customization, integration and installation; that revenue is recognized ratably over the applicable contract term. Finally, Bolt’s commissions on the premiums from sales of insurance policies are recognized when Bolt has sufficient information to determine the amount that is owed, it is probable that the economic benefits associated with the transaction will flow to Bolt, and the costs incurred, or to be incurred, with respect to the transaction can be accurately measured.

GovDelivery revenue consists of (1) nonrefundable setup fees and (2) monthly maintenance and hosting fees. Those fees generally are deferred and recognized as the services are performed, which is typically over the service term. Costs related to performing setup services are expensed as incurred.

MSDSonline derives revenue from three sources: (1) subscription fees, (2) professional services fees and (3) compliance solutions project fees. The vast majority of MSDSonline’s revenue is derived from subscription fees from customers accessing the business’ database and web-based tools; that revenue is recognized ratably over the applicable contract term, beginning on the contract implementation date. MSDSonline also generates (a) professional services fees from authoring and/or compiling its customers’ online libraries of material safety data sheet documents and indexing those documents for the customers’ use and (b) fees from training and compliance services projects; the revenue derived from those fees is recognized on a percentage of completion basis over the applicable project’s timeline.

Net Income (Loss) Per Share

Basic net income (loss) per share (EPS) is computed using the weighted average number of common shares outstanding during a given period. Diluted EPS includes shares, unless anti-dilutive, that would arise from the exercise of stock options and conversion of other convertible securities and is adjusted, if applicable, for the effect on net income (loss) of such transactions. See Note 13, “Net Income (Loss) per Share.”

Escrow Information

When an interest in one of ICG’s businesses is sold, a portion of the sale consideration may be held in escrow primarily to satisfy purchase price adjustments and/or indemnity claims. ICG records gains on escrowed proceeds at the time ICG is entitled to receive such proceeds, the amount is fixed or determinable and realization is assured. As of September 30, 2013, the following amounts related to ICG’s potential proceeds from sales of former consolidated subsidiaries and equity method businesses remained in escrow to satisfy potential or ongoing indemnification claims: (1) $7.9 million of cash related to the sales of InvestorForce and Channel Intelligence, and (2) 11,650 shares of common stock for The Active Network, Inc. (NYSE: ACTV) (“Active”), valued at $0.2 million (based on the stock’s September 30, 2013 closing price) related to the sale of StarCite, Inc. (“StarCite”). Those outstanding escrows are scheduled to be released at various dates within the next two years, subject to pending and potential indemnity claims pursuant to the terms of the specific sales agreements.

Concentration of Customer Base and Credit Risk

For both the three and nine months ended September 30, 2013 and 2012, none of the customers of ICG’s businesses represented more than 10% of ICG’s consolidated revenue.

Commitments and Contingencies

From time to time, ICG and its businesses are involved in various claims and legal actions arising in the ordinary course of business. ICG does not expect any liability with respect to any legal claims or actions that would materially affect its consolidated financial position or cash flows.

Reclassifications

Certain amounts in the prior year financial statements have been reclassified to conform to the current-year presentation. The impact of the reclassifications made to prior year amounts is not material and did not affect net income (loss).

Discontinued Operations

During the nine months ended September 30, 2013, InvestorForce and Channel Intelligence (a former subsidiary of CIML) were sold. Additionally, on October 2, 2013, ICG executed a definitive merger agreement for the sale of Procurian to Accenture. Accordingly, ICG has recast all financial information within this Report to conform to the current period presentation and to present those three businesses as discontinued operations retrospectively for all periods presented.