Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Consolidated Majority-Owned Subsidiaries - BioPop Additional Information (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended
	Oct. 01, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Business Acquisition [Line Items]
Goodwill		$ 101,059us-gaap_Goodwill	$ 13,823us-gaap_Goodwill	$ 0us-gaap_Goodwill
Biological & Popular Culture, Inc.
Business Acquisition [Line Items]
Total consideration transferred	1,300
Percentage of outstanding common stock acquired	51.00%
Goodwill	822
Intangible assets	$ 430
Biological & Popular Culture, Inc. \| Patents, related technologies and know-how
Business Acquisition [Line Items]
Acquired intangible assets, useful life	4 years