The cash outflow for the return on capital for preferred shareholders.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3291-108585

Reference 2: 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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 20

-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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

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

Name:	us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Equity and Earnings Per Share (Details) (USD $) In Thousands	1 Months Ended							3 Months Ended	9 Months Ended
	Nov. 30, 2011	May 31, 2011	Feb. 28, 2011	Aug. 31, 2010	Jul. 31, 2010	May 31, 2010	Feb. 28, 2010	Sep. 30, 2011	Sep. 30, 2011	Sep. 30, 2010
Preferred stock dividend activity
Dividend Declaration Date	Nov. 04, 2011	May 05, 2011	Feb. 01, 2011		Jul. 29, 2010	May 04, 2010	Feb. 05, 2010	Aug. 04, 2011
Dividends, Payment Date, Day, Month and Year	Nov. 15, 2011	May 16, 2011	Feb. 15, 2011	Aug. 16, 2010		May 17, 2010	Feb. 16, 2010	Aug. 15, 2011
Preferred Stock Dividends Paid	$ 17,340	$ 19,219	$ 19,598	$ 23,350		$ 23,350	$ 23,350	$ 19,140	$ 57,957	$ 70,050
Preferred Stock Issued To Public [Member]
Preferred stock dividend activity
Preferred Stock Dividends Paid	4,215	6,094	6,473	10,225		10,225	10,225	6,015
Preferred Stock Issued To Principal Stockholder's Family [Member]
Preferred stock dividend activity
Preferred Stock Dividends Paid	$ 13,125	$ 13,125	$ 13,125	$ 13,125		$ 13,125	$ 13,125	$ 13,125