Organization, Proposed Merger And Bases Of Presentation (Narrative) (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended
Apr. 27, 2012	Mar. 31, 2012
Organization, Proposed Merger And Bases Of Presentation [Abstract]
Cumulative liability including income tax, interest and penalties		$ 14.5
Voluntary payment of outstanding taxes to Australian Tax Office ("ATO")	$ 6.5

The sum of foreign current income tax expense or benefit and foreign deferred income tax expense or benefit pertaining to Income or Loss from continuing foreign operations.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph h

-Subparagraph 1

-Article 4

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h)(1))

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

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