Acquisition of Interests in Partner Companies	9 Months Ended
Acquisition of Interests in Partner Companies	Sep. 30, 2011
Acquisition of Interests In Partner Companies [Abstract]
ACQUISITION OF INTERESTS IN PARTNER COMPANIES	4. ACQUISITION OF INTERESTS IN PARTNER COMPANIES AND FUNDS In September 2011, the Company acquired a 30.1% ownership interest in Putney, Inc. (“Putney”) for $10.0 million. Putney is a specialty pharmaceutical company focused on providing generic medicines for pets. The Company accounts for its interest in Putney under the equity method. The difference between the Company’s cost and its interest in the underlying net assets of Putney was preliminarily allocated to intangible assets and goodwill as reflected in the carrying value in Ownership interests in and advances to partner companies on the Consolidated Balance Sheets. In August 2011, the Company acquired a 36% ownership interest in Penn Mezzanine for $3.9 million. Penn Mezzanine is a mezzanine lender focused on lower middle-market, Mid-Atlantic companies. The Company expects to deploy up to $26.1 million over a several year period in lending opportunities that meet certain predefined criteria alongside existing and future Penn Mezzanine funds. The Company accounts for its interest in Penn Mezzanine under the equity method of accounting. In August 2011, the Company funded $2.4 million of a convertible bridge loan to Swap.com. The Company had previously deployed an aggregate of $8.1 million in Swap.com and currently maintains a 45.6% ownership interest. Swap.com is an internet based business that enables users to trade books, music, movies, video games and fashion using its proprietary trade matching software. The Company accounts for its interest in Swap.com under the equity method. The difference between the Company’s cost and its interest in the underlying net assets of Swap.com was allocated to intangible assets and goodwill as reflected in the carrying value in Ownership interests in and advances to partner companies on the Consolidated Balance Sheets. In July 2011, the Company purchased $1.2 million of common shares and maintains a 22.5% interest in MediaMath, Inc. (“MediaMath”). In February 2011, the Company deployed $9.0 million in MediaMath. In conjunction with this funding, the Company’s ownership interest in MediaMath increased from 17.3% to 22.4%, a threshold at which the Company believes it exercises significant influence. Accordingly, the Company adopted the equity method of accounting for its holdings in MediaMath. See Note 13 regarding the change in accounting treatment for the Company’s holdings in MediaMath from the cost method to the equity method. The Company previously had acquired an interest in MediaMath in July 2009 for $6.7 million. MediaMath is an online media trading company that enables advertising agencies and their advertisers to optimize their ad spending across various exchanges through its proprietary algorithmic bidding platform and data integration technology. The difference between the Company’s cost and its interest in the underlying net assets of MediaMath was preliminarily allocated to intangible assets and goodwill as reflected in the carrying value in Ownership interests in and advances to partner companies on the Consolidated Balance Sheets. In June 2011, the Company acquired a 31.7% ownership interest in NovaSom, Inc. (“NovaSom”) for $20.0 million. NovaSom provides diagnostic devices and services for home testing and evaluation of sleep-disordered breathing, including obstructive sleep apnea. The Company accounts for its interest in NovaSom under the equity method. The difference between the Company’s cost and its interest in the underlying net assets of NovaSom was preliminarily allocated to intangible assets and goodwill as reflected in the carrying value in Ownership interests in and advances to partner companies on the Consolidated Balance Sheets. In April 2011, the Company acquired a 24.7% ownership interest in PixelOptics Inc. (“PixelOptics”) for $25.0 million. PixelOptics provides electronic corrective eyeglasses designed to substantially reduce or eliminate the visual distortion and other limitations associated with multifocal lenses. The Company accounts for its interest in PixelOptics under the equity method. The difference between the Company’s cost and its interest in the underlying net assets of PixelOptics was preliminarily allocated to intangible assets and goodwill as reflected in the carrying value in Ownership interests in and advances to partner companies on the Consolidated Balance Sheets. In April 2011, the Company funded $0.8 million of a convertible bridge loan to Alverix, Inc. (“Alverix”). The Company previously deployed an aggregate of $6.3 million in Alverix and currently maintains a 49.6% ownership interest. Alverix provides next-generation instrument and connectivity platforms for diagnostic Point-of-Care (POC) testing. The Company accounts for its holdings in Alverix under the equity method. The difference between the Company’s cost and its interest in the underlying net assets of Alverix was allocated to intangible assets and goodwill as reflected in the carrying value in Ownership interests in and advances to partner companies on the Consolidated Balance Sheets. In February 2011, the Company acquired a 30.7% ownership interest in ThingWorx, Inc. (“ThingWorx”) for $5.0 million. ThingWorx offers a platform designed to accelerate the development of applications connecting people, systems and devices. The Company accounts for its holdings in ThingWorx under the equity method. The difference between the Company’s cost and its interest in the underlying net assets of ThingWorx was preliminarily allocated to intangible assets and goodwill as reflected in the carrying value in Ownership interests in and advances to partner companies on the Consolidated Balance Sheets.

The entire disclosure for equity investment, or group of investments, for which combined disclosure is appropriate, including: (a) the name of each investee and percentage of ownership of common stock, (b) accounting policies for investments in common stock, (c) difference between the amount at which the investment is carried and the amount of underlying equity in net assets and the accounting treatment of the difference, (d) the total fair value of each identified investment for which a market value is available, (e) summarized information as to assets, liabilities, and results of operations of the investees (for investments in unconsolidated subsidiaries, common stock of joint ventures, or other investments using the equity method), and (f) material effects of possible conversions, exercises, or contingent issuances of the investee. Other disclosures include (a) the names of any investee in which the investor owns 20 percent or more of the voting stock and investment is not accounted for using the equity method, and the reasons why not, and (b) the names of any investee in which the investor owns less than 20 percent of the voting stock and the investment is accounted for using the equity method, and the reasons why it is.