Quarterly report pursuant to Section 13 or 15(d)

Debt - Textual (Details)

v2.4.0.8
Debt - Textual (Details) (USD $)
6 Months Ended 0 Months Ended 1 Months Ended 6 Months Ended 1 Months Ended 1 Months Ended
Jun. 30, 2014
institution
Jun. 30, 2013
Dec. 31, 2013
institution
Jun. 30, 2014
Farmadiet Acquisition
Dec. 31, 2013
Farmadiet Acquisition
Jun. 30, 2014
Minimum
Farmadiet Acquisition
Jun. 30, 2014
Maximum
Farmadiet Acquisition
Jun. 30, 2014
Notes
Dec. 31, 2013
Notes
Jan. 31, 2013
Notes
Notes Due February 1, 2033
Rate
Jun. 30, 2014
Notes
Notes Due February 1, 2033
Jan. 31, 2013
Notes
Notes Due February 1, 2033
Jun. 30, 2014
Notes
Notes Due February 1, 2033
Rate
Dec. 31, 2013
Notes
Notes Due February 1, 2033
Jan. 31, 2013
Notes
Notes Due February 1, 2033
Minimum
Jan. 31, 2013
Notes
Notes Due February 1, 2033
Maximum
Jan. 31, 2013
Notes
Notes Due February 1, 2033
On or after February 1, 2017 and before February 1, 2019
Jun. 30, 2014
Line of Credit
Dec. 31, 2013
Line of Credit
Jun. 30, 2014
Common stock investments, available for sale
Notes
Notes Due February 1, 2033
Debt Instrument [Line Items]                                        
Debt face amount                       $ 175,000,000.0                
Interest rate of notes payable                     3.00% 3.00% 3.00% 3.00%            
Equivalent redemption price                   100.00%   100.00%         100.00%      
Principal balance       3,898,000 5,234,000     116,365,000 211,912,000   87,600,000   87,600,000              
Convertible debt, conversion ratio                   141.4827     141.4827              
Convertible debt, principal amount for conversion                       1,000                
Convertible debt, conversion price                     $ 7.07 $ 7.07 $ 7.07              
Convertible debt, threshold percentage of stock price trigger                       130.00%                
Number of trading days applicable conversion price                             20 days          
Number of consecutive trading days applicable conversion price                               30 days        
Debt Conversion, Original Debt, Amount                     70,400,000                  
Convertible debt, stock issued from conversion                                       10,974,431
Common Stock, par value (in dollars per share) $ 0.01   $ 0.01                                  
Interest Paid 2,771,000 318,000                 800,000                  
Gain (loss) on embedded derivative 800,000                                      
Number of financial institutions 12   14                                  
Weighted average interest rate       3.40% 3.90%                         5.80% 7.70%  
Variable interest rates           2.73% 6.13%                          
Gains (Losses) on Extinguishment of Debt $ (2,668,000) $ 0                 $ (2,700,000)