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Commitments and Contingencies (Details Textual) (USD $)	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2010	Sep. 30, 2012	Jul. 19, 2012	Jun. 30, 2007
Commitments and Contingencies (Textual) [Abstract]
Company made payments to Lower Willamette Group as interim settlement			$ 0		$ 175,000
Amount spent to complete work specified in Work Plans			2,000,000
Total stand by letters of credit			3,200,000
Accrued Liabilities Payment Related to Settlement of Litigation				12,500,000
Payments for Legal Settlements	200,000	200,000
Plaintiffs' attorney's fees included in Accrued Liabilities				$ 750,000

X

- Definition

Accrued liabilities related to attorney fees payable for plaintiff claim.

+ References

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X

- Definition

Accrued liabilities related to settlement of litigation.

+ References

No definition available.

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X

- Definition

Amount spent to complete work specified in work plans.

+ References

No definition available.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

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X

- Definition

Amount of consideration the entity has agreed to pay to settle a legal matter.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14326-108349



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14435-108349



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 9

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14557-108349

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- Definition

The amount of cash paid for the settlement of litigation or for other legal issues during the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3536-108585



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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 27

-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.

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