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Ownership Interests in and Advances to Partner Companies and Funds (Tables)
 9 Months Ended
Sep. 30, 2013
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]  
Ownership Interests in and Advances to Partner Companies and Private Equity Funds
The following summarizes the carrying value of the Company’s ownership interests in and advances to partner companies and private equity funds.
   
   
September 30, 2013
 
December 31, 2012
   
(In thousands)
(Unaudited)
Fair value
$
14,560

 
$
20,972

Equity Method:
   
 
   
Partner companies
108,249

 
102,931

Private equity funds
3,606

 
3,810

   
111,855

 
106,741

Cost Method:
   
 
   
Partner companies
12,530

 
10,000

Private equity funds
2,518

 
2,634

   
15,048

 
12,634

Advances to partner companies
1,585

 
8,292

   
$
143,048

 
$
148,639

Loan participations receivable
$
8,279

 
$
7,085

Available-for-sale securities
$
32

 
$
58
Results of Operations of PixelOptics
The results of PixelOptics are reported on a one quarter lag.
   
Six Months Ended June 30,
   
2013
 
2012
 
(In thousands)
(Unaudited)
Results of Operations:
   
 
   
Revenue
$
800

 
$
569

Operating loss
$
(12,219
)
 
$
(16,172
)
Net loss
$
(14,838
)
 
$
(16,925
)