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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Statement of Financial Position [Abstract]    
Ownership interests in and advances, to partner companies and funds, fair value $ 20,057 $ 20,972
Preferred stock, par value $ 0.10 $ 0.10
Preferred stock, shares authorized 1,000,000 1,000,000
Common stock, par value $ 0.1 $ 0.1
Common stock, shares authorized 83,333,000 83,333,000
Common stock, shares issued 21,553,000 20,968,000
Common stock, shares outstanding 21,553,000 20,968,000