The cash inflow associated with the amount received by a corporation from a shareholder during the period.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 19

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 18

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3255-108585

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

Shareholder's Equity (Details) (USD $)	1 Months Ended	12 Months Ended
Shareholder's Equity (Details) (USD $)	May 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jul. 02, 2011 9.75% Senior Notes [Member]	Feb. 14, 2007 9.75% Senior Notes [Member]	Dec. 31, 2012 Senior Notes [Member] 9.75% Senior Notes [Member]	Dec. 31, 2011 Senior Notes [Member] 9.75% Senior Notes [Member]	Jul. 02, 2011 Senior Notes [Member] 9.75% Senior Notes [Member]	Dec. 31, 2010 Senior Notes [Member] 9.75% Senior Notes [Member]	Feb. 14, 2007 Senior Notes [Member] 9.75% Senior Notes [Member]
Shareholders' Equity [Line Items]
Minority interest purchase price	$ 125,000,000
Contributed capital	125,000,000	0	125,000,000	0
Issuance Costs	4,900,000
Amount redeemed of senior notes					$ 125,000,000				$ 125,000,000
Interest rate of senior notes						9.75%	9.75%	9.75%		9.75%	9.75%