Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details)

v3.19.2
Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
May 31, 2019
Dec. 31, 2018
Jun. 30, 2019
Mar. 31, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Jan. 01, 2019
Mar. 31, 2018
Dec. 31, 2017
Property, Plant and Equipment [Line Items]                    
Cash flows provided by operating activities           $ (15,800) $ 134,405      
Cash flows used in financing activities           (190,167) $ 616,753      
Right-of-use assets   $ 0 $ 10,964     10,964        
Lease liabilities     11,478     11,478        
Revenue recognized from milestone method revenue     2,700     4,100        
Investment in Viking common stock   46,191 50,116     50,116        
Total assets   656,665 $ 1,119,378     $ 1,119,378        
Potentially dilutive shares excluded from calculation due to anti-dilutive effect (shares)     7,457   2,092 7,243 1,120      
Share-based Compensation                    
Property, Plant and Equipment [Line Items]                    
Potentially dilutive shares excluded from calculation due to anti-dilutive effect (shares)     800              
Level 1                    
Property, Plant and Equipment [Line Items]                    
Investment in Viking common stock   46,191 $ 50,116     $ 50,116        
Total assets   56,774 $ 65,458     $ 65,458        
Viking Therapeutics, Inc.                    
Property, Plant and Equipment [Line Items]                    
Equity ownership interest (as a percent)                 12.40%  
Outstanding warrants to purchase shares of Viking's common stock (shares)     1,500     1,500        
Warrant exercise price (USD per share)     $ 1.50     $ 1.50        
Recurring | Level 1 | Investment in Warrants                    
Property, Plant and Equipment [Line Items]                    
Total assets     $ 10,300     $ 10,300       $ 9,300
Accounting Standards Update 2016-02                    
Property, Plant and Equipment [Line Items]                    
Right-of-use assets               $ 5,200    
Lease liabilities               $ 5,900    
Royalty Agreements | Aziyo                    
Property, Plant and Equipment [Line Items]                    
Effective interest rate for forecasted cash flows (as a percent)           23.00%        
Commercial license rights                    
Property, Plant and Equipment [Line Items]                    
Definite lived intangible assets   36,298 50,298     $ 50,298        
Commercial license rights | Palvella                    
Property, Plant and Equipment [Line Items]                    
Contract asset   8,000                
Definite lived intangible assets   10,000 10,000     10,000        
Commercial license rights | Novan                    
Property, Plant and Equipment [Line Items]                    
Contract asset $ 20,000                  
Definite lived intangible assets $ 12,000 $ 0 $ 12,000     $ 12,000        
Minimum | Royalty Agreements | Palvella                    
Property, Plant and Equipment [Line Items]                    
Tiered royalty rate (as a percent)   5.00%                
Minimum | Royalty Agreements | Novan                    
Property, Plant and Equipment [Line Items]                    
Tiered royalty rate (as a percent) 7.00%                  
Maximum | Royalty Agreements | Palvella                    
Property, Plant and Equipment [Line Items]                    
Tiered royalty rate (as a percent)   9.80%                
Maximum | Royalty Agreements | Novan                    
Property, Plant and Equipment [Line Items]                    
Tiered royalty rate (as a percent) 10.00%                  
Previously Reported                    
Property, Plant and Equipment [Line Items]                    
Accrued Liabilities   $ 4,600                
Restatement Adjustment                    
Property, Plant and Equipment [Line Items]                    
Cash flows provided by operating activities       $ 4,600            
Cash flows used in financing activities       $ 4,600