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Subsequent Events (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Jul. 01, 2016
conversion_right
d
$ / shares
Apr. 01, 2015
conversion_right
d
$ / shares
Jan. 30, 2013
$ / shares
Jul. 31, 2016
USD ($)
shares
Aug. 31, 2013
conversion_right
Jun. 30, 2016
USD ($)
$ / shares
Jun. 30, 2015
USD ($)
Jun. 30, 2016
USD ($)
$ / shares
Jun. 30, 2015
USD ($)
Debt Instrument [Line Items]                  
Contingent consideration satisfied | $           $ (10,758) $ 339 $ (12,511) $ (4,836)
Convertible Notes | Notes Due February 1, 2033                  
Debt Instrument [Line Items]                  
Common stock trigger price (in dollars per share)   $ 9.19              
Convertible debt, threshold percentage of stock price trigger   130.00% 130.00%            
Conversion price per share (in dollars per share)   $ 7.07 $ 7.07     $ 7.07   $ 7.07  
Number of trading days | d   20              
Number of consecutive trading days applicable conversion price   30 days              
Conversion right triggered | conversion_right   1     1        
Conversion rate   0.1414827 0.1414827         0.1414827  
Subsequent Event                  
Debt Instrument [Line Items]                  
Contingent consideration satisfied | $       $ 25,000          
Shares issued (shares) | shares       2,611,648          
Subsequent Event | Convertible Notes | Notes Due February 1, 2033                  
Debt Instrument [Line Items]                  
Common stock trigger price (in dollars per share) $ 9.19                
Convertible debt, threshold percentage of stock price trigger 130.00%                
Conversion price per share (in dollars per share) $ 7.07                
Number of trading days | d 20                
Number of consecutive trading days applicable conversion price 30 days                
Conversion right triggered | conversion_right 1                
Conversion rate 0.1414827