Impairment Charges (Details) (USD $)	12 Months Ended	3 Months Ended
Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2013 Nashville facility	Sep. 30, 2011 Nashville facility
Impairment Charges
Carrying Value of Long-Lived Assets			$ 30,329,000	$ 46,016,000
Fair Value of Long-Lived Assets			26,000,000	30,329,000
Non-cash impairment charge	$ 4,329,000	$ 15,687,000	$ 4,329,000	$ 15,687,000

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2420-110228

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration