Carrying amount of reserve for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs, which is expected to be paid within one year of the date of the statement of financial position.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.25)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 25

-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 55

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=6396582&loc=d3e15243-108350

Name:	us-gaap_LitigationReserveCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Commitments, Contingencies and Other Matters (Details) (USD $) In Thousands, unless otherwise specified					0 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2013 Patent Infringement Claim Brought by the Curators of the University of Missouri [Member]	Dec. 31, 2012 Patent Infringement Claim Brought by the Curators of the University of Missouri [Member]	Jul. 17, 2013 TWi Pharmaceuticals [Member] claim	Nov. 21, 2013 AWP Claim Brought by State of Illinois [Member]	Mar. 31, 2014 AWP Claim Brought by State of Illinois [Member] Accrued Legal Settlements [Member]
Commitments Contingencies and Other Matters [Line Items]
Accrued legal settlements	$ 37,517	$ 41,367	$ 9,000	$ 9,000			$ 28,500
Claims dismissed					2
Litigation settlement amount						$ 28,500