9. Financing Activities (Details Narrative) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012
Financing Activities Details Narrative
Cumulative amount of bonds repurchased	$ 47.3
Future minimum annual payments on indebtedness	$ 252.7

Fair value amount of debt instrument that was repurchased.

No definition available.

Name:	us-gaap_DebtInstrumentRepurchaseAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant