Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details 3)

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Fair Value Measurements (Details 3) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended 12 Months Ended
Jun. 30, 2013
Dec. 31, 2012
BZNE Note and conversion feature [Member]
    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Additions   $ 1,700
Total losses (gains) for the period:    
Included in results of operations   1,563
Included in Other comprehensive loss   53
Transfer out to equity method investment   (1,276)
Ending Balance 2,040 2,040
Embedded conversion option [Member]
    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning Balance 0  
Additions 59,204  
Total losses (gains) for the period:    
Included in results of operations 14,875  
Ending Balance 74,079  
Contingent Consideration [Member]
    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning Balance 20,056 18,002
Additions 47,710 1,234
Total losses (gains) for the period:    
Included in results of operations 3,901 820
Payments (2,761)  
Ending Balance 68,906 20,056
Deferred acquisition payments, net of discount [Member]
    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning Balance 10,103  
Additions   9,673
Total losses (gains) for the period:    
Included in results of operations 112 430
Payments (800)  
Ending Balance $ 9,415 $ 10,103