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Debt - Textual (Details) (USD $)
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6 Months Ended | 0 Months Ended | 1 Months Ended | 6 Months Ended | 1 Months Ended | 1 Months Ended | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Jun. 30, 2014
institution
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Jun. 30, 2013
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Dec. 31, 2013
institution
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Jun. 30, 2014
Farmadiet Acquisition
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Dec. 31, 2013
Farmadiet Acquisition
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Jun. 30, 2014
Minimum
Farmadiet Acquisition
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Jun. 30, 2014
Maximum
Farmadiet Acquisition
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Jun. 30, 2014
Notes
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Dec. 31, 2013
Notes
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Jan. 31, 2013
Notes
Notes Due February 1, 2033
Rate
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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
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Jan. 31, 2013
Notes
Notes Due February 1, 2033
Maximum
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Jan. 31, 2013
Notes
Notes Due February 1, 2033
On or after February 1, 2017 and before February 1, 2019
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Jun. 30, 2014
Line of Credit
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Dec. 31, 2013
Line of Credit
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Jun. 30, 2014
Common stock investments, available for sale
Notes
Notes Due February 1, 2033
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| 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) | |||||||||||||||||