Acquisitions of Ownership Interests in Partner Companies and Funds	9 Months Ended
Sep. 30, 2015
Equity Method Investments and Joint Ventures [Abstract]
Acquisitions of Ownership Interests in Partner Companies	Acquisitions of Ownership Interests in Partner Companies In July 2015, the Company deployed an additional $10.0 million into Apprenda, Inc. The Company had previously deployed $12.1 million in Apprenda. Apprenda is an enterprise platform-as-a-service company powering the next generation of enterprise software development in public, private and hybrid clouds. The Company accounts for its interest in Apprenda under the equity method. In July 2015, the Company deployed an additional $1.5 million into InfoBionic. The Company had previously deployed an aggregate of $8.0 million in InfoBionic. InfoBionic is an emerging digital health company focused on creating patient monitoring solutions for chronic disease management with an initial market focus on cardiac arrhythmias. The Company accounts for its interest in InfoBionic under the equity method. During the six months ended June 30, 2015, the Company funded an aggregate of $2.8 million of convertible bridge loans to Quantia, Inc. The Company had previously deployed an aggregate of $12.5 million in Quantia. The Company accounted for its interest in Quantia under the equity method. In July 2015, Quantia was acquired by Physicians Interactive. During the six months ended June 30, 2015, the Company funded an aggregate of $2.0 million of convertible bridge loans to AppFirst, Inc. The Company had previously deployed an aggregate of $8.6 million in AppFirst. AppFirst's technology provides global organizations the ability to achieve unmatched visibility into the real-time relationships between distributed applications and the global assets which support their execution. The Company accounts for its interest in AppFirst under the equity method. In June 2015, the Company acquired a 24.5% interest in QuanticMind, Inc., formerly InsideVault, Inc., for $7.0 million. QuanticMind is a software-as-a-service company that provides enterprise-level predictive advertising management software for paid search, social and mobile. The Company accounts for its interest in QuanticMind under the equity method. In May 2015, the Company deployed an additional $3.5 million into Pneuron Corporation. The Company had previously deployed $5.0 million in Pneuron. Pneuron enables organizations to rapidly solve business problems through a distributed approach that cuts across data, applications and processes. The Company accounts for its interest in Pneuron under the equity method. In May and February 2015, the Company deployed an aggregate of $4.8 million into Clutch Holdings, Inc. ("Clutch"). The Company had previously deployed an aggregate of $7.5 million in Clutch. Clutch provides consumer management technology that delivers customer intelligence and consumer engagement solutions to premium brands. The Company accounts for its interest in Clutch under the equity method. In May 2015, the Company acquired a 22.6% interest in Sonobi, Inc. for $5.4 million. Sonobi is an advertising technology developer that creates data-driven tools and solutions to meet the evolving needs of demand- and sell-side organizations within the digital media marketplace. The Company accounts for its interest in Sonobi under the equity method. In April and March 2015, the Company funded an aggregate $1.0 million convertible bridge loan to AdvantEdge Healthcare Solutions, Inc. ("AdvantEdge"). The Company had previously deployed an aggregate of $15.3 million in AdvantEdge. AdvantEdge is a provider of physician billing and practice management services and software to hospital-based physician groups, large office-based physician practices, and ambulatory surgery centers. The Company accounts for its interest in AdvantEdge under the equity method. In April 2015, the Company acquired a 31.5% interest in meQuilibrium for $6.5 million. meQuilibrium offers an individualized, online stress management program based on building resilience, defined as the capacity to rebound or bounce back from adversity, conflict, failure and also positive events, progress and increased responsibility. The Company accounts for its interest in meQuilibrium under the equity method. In March 2015, the Company funded $4.0 million of a convertible bridge loan to Spongecell, Inc. The Company had previously deployed $10.0 million in Spongecell. Spongecell is a programmatic creative solution that leverages data-driven technology to automate the production and delivery of high-quality ads at scale across display, mobile and video. The Company accounts for its interest in Spongecell under the equity method. In March 2015, the Company deployed an additional $0.3 million into Dabo Health. The Company had previously deployed $2.0 million in Dabo Health. The Company impaired all of the carrying value of Dabo Health in the first quarter of 2015. The Company accounted for its interest in Dabo Health under the cost method. In February 2015, the Company acquired a 30.1% interest in CloudMine, Inc. for $2.9 million. CloudMine is an enterprise mobility company that provides a HIPAA-compliant managed mobility solution to accelerate development, eliminate maintenance and standardize cross-organizational mobile IT. The Company accounts for its interest in CloudMine under the equity method. In January 2015, the Company acquired a 19.9% interest in Aventura, Inc. for $6.0 million. Aventura is a leader in healthcare workflow optimization software solutions. The Company accounts for its interest in Aventura under the equity method. In January 2015, the Company acquired a 25.4% interest in Full Measure Education, Inc. ("Full Measure") for $4.0 million. Full Measure enables student success through a comprehensive technology-based communications platform. The Company accounts for its interest in Full Measure under the equity method. In January 2015, the Company deployed an additional $1.1 million into Trice Medical, Inc. The Company had previously deployed an aggregate of $5.0 million in Trice Medical. Trice Medical is a diagnostics company focused on micro invasive technologies. The Company accounts for its interest in Trice Medical under the equity method.

Acquisitions of Ownership Interests in Partner Companies

In July 2015, the Company deployed an additional $10.0 million into Apprenda, Inc. The Company had previously deployed $12.1 million in Apprenda. Apprenda is an enterprise platform-as-a-service company powering the next generation of enterprise software development in public, private and hybrid clouds. The Company accounts for its interest in Apprenda under the equity method.

In July 2015, the Company deployed an additional $1.5 million into InfoBionic. The Company had previously deployed an aggregate of $8.0 million in InfoBionic. InfoBionic is an emerging digital health company focused on creating patient monitoring solutions for chronic disease management with an initial market focus on cardiac arrhythmias. The Company accounts for its interest in InfoBionic under the equity method.

During the six months ended June 30, 2015, the Company funded an aggregate of $2.8 million of convertible bridge loans to Quantia, Inc. The Company had previously deployed an aggregate of $12.5 million in Quantia. The Company accounted for its interest in Quantia under the equity method. In July 2015, Quantia was acquired by Physicians Interactive.

During the six months ended June 30, 2015, the Company funded an aggregate of $2.0 million of convertible bridge loans to AppFirst, Inc. The Company had previously deployed an aggregate of $8.6 million in AppFirst. AppFirst's technology provides global organizations the ability to achieve unmatched visibility into the real-time relationships between distributed applications and the global assets which support their execution. The Company accounts for its interest in AppFirst under the equity method.

In June 2015, the Company acquired a 24.5% interest in QuanticMind, Inc., formerly InsideVault, Inc., for $7.0 million. QuanticMind is a software-as-a-service company that provides enterprise-level predictive advertising management software for paid search, social and mobile. The Company accounts for its interest in QuanticMind under the equity method.

In May 2015, the Company deployed an additional $3.5 million into Pneuron Corporation. The Company had previously deployed $5.0 million in Pneuron. Pneuron enables organizations to rapidly solve business problems through a distributed approach that cuts across data, applications and processes. The Company accounts for its interest in Pneuron under the equity method.

In May and February 2015, the Company deployed an aggregate of $4.8 million into Clutch Holdings, Inc. ("Clutch"). The Company had previously deployed an aggregate of $7.5 million in Clutch. Clutch provides consumer management technology that delivers customer intelligence and consumer engagement solutions to premium brands. The Company accounts for its interest in Clutch under the equity method.

In May 2015, the Company acquired a 22.6% interest in Sonobi, Inc. for $5.4 million. Sonobi is an advertising technology developer that creates data-driven tools and solutions to meet the evolving needs of demand- and sell-side organizations within the digital media marketplace. The Company accounts for its interest in Sonobi under the equity method.

In April and March 2015, the Company funded an aggregate $1.0 million convertible bridge loan to AdvantEdge Healthcare Solutions, Inc. ("AdvantEdge"). The Company had previously deployed an aggregate of $15.3 million in AdvantEdge. AdvantEdge is a provider of physician billing and practice management services and software to hospital-based physician groups, large office-based physician practices, and ambulatory surgery centers. The Company accounts for its interest in AdvantEdge under the equity method.

In April 2015, the Company acquired a 31.5% interest in meQuilibrium for $6.5 million. meQuilibrium offers an individualized, online stress management program based on building resilience, defined as the capacity to rebound or bounce back from adversity, conflict, failure and also positive events, progress and increased responsibility. The Company accounts for its interest in meQuilibrium under the equity method.

In March 2015, the Company funded $4.0 million of a convertible bridge loan to Spongecell, Inc. The Company had previously deployed $10.0 million in Spongecell. Spongecell is a programmatic creative solution that leverages data-driven technology to automate the production and delivery of high-quality ads at scale across display, mobile and video. The Company accounts for its interest in Spongecell under the equity method.

In March 2015, the Company deployed an additional $0.3 million into Dabo Health. The Company had previously deployed $2.0 million in Dabo Health. The Company impaired all of the carrying value of Dabo Health in the first quarter of 2015. The Company accounted for its interest in Dabo Health under the cost method.

In February 2015, the Company acquired a 30.1% interest in CloudMine, Inc. for $2.9 million. CloudMine is an enterprise mobility company that provides a HIPAA-compliant managed mobility solution to accelerate development, eliminate maintenance and standardize cross-organizational mobile IT. The Company accounts for its interest in CloudMine under the equity method.

In January 2015, the Company acquired a 19.9% interest in Aventura, Inc. for $6.0 million. Aventura is a leader in healthcare workflow optimization software solutions. The Company accounts for its interest in Aventura under the equity method.

In January 2015, the Company acquired a 25.4% interest in Full Measure Education, Inc. ("Full Measure") for $4.0 million. Full Measure enables student success through a comprehensive technology-based communications platform. The Company accounts for its interest in Full Measure under the equity method.

In January 2015, the Company deployed an additional $1.1 million into Trice Medical, Inc. The Company had previously deployed an aggregate of $5.0 million in Trice Medical. Trice Medical is a diagnostics company focused on micro invasive technologies. The Company accounts for its interest in Trice Medical under the equity method.