Annual report pursuant to Section 13 and 15(d)

Goodwill and Other Intangible Assets (Other Intangible Assets) (Details)

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Goodwill and Other Intangible Assets (Other Intangible Assets) (Details) (USD $)
 12 Months Ended 72 Months Ended 120 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Nov. 01, 2016
Nov. 01, 2020
Acquired Finite-Lived Intangible Assets [Line Items]        
Finite-Lived Intangible Asset, Useful Life     6 years 10 years
Finite-Lived Intangible Assets, Gross $ 0 $ 8,363,000    
Finite-Lived Intangible Assets, Accumulated Amortization 0 1,054,000    
Finite-Lived Intangible Assets, Net 0 7,309,000    
Amortization of Intangible Assets 900,000 900,000    
Rent payable 1,533,000 2,070,000    
Developed Technology Rights [Member]
        
Acquired Finite-Lived Intangible Assets [Line Items]        
Finite-Lived Intangible Assets, Gross 0 4,097,000    
Finite-Lived Intangible Assets, Accumulated Amortization 0 797,000    
Finite-Lived Intangible Assets, Net 0 3,300,000    
Database Rights [Member]
        
Acquired Finite-Lived Intangible Assets [Line Items]        
Finite-Lived Intangible Assets, Gross 0 2,203,000    
Finite-Lived Intangible Assets, Accumulated Amortization 0 257,000    
Finite-Lived Intangible Assets, Net 0 1,946,000    
Trade Names [Member]
        
Acquired Finite-Lived Intangible Assets [Line Items]        
Finite-Lived Intangible Assets, Gross 0 2,063,000    
Finite-Lived Intangible Assets, Accumulated Amortization 0 0    
Finite-Lived Intangible Assets, Net $ 0 $ 2,063,000