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Amount billed to customers under long-term contracts or programs that have been withheld because of retainage provisions in a contract to be collected in the next fiscal year following the latest fiscal year.

+ References

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-Publisher SEC

-Name Regulation S-X (SX)

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Amount of billed or unbilled claims or other similar items subject to uncertainty concerning their determination or ultimate realization under long-term contracts that are expected to be collected after the next fiscal year.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section S99

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-Name Regulation S-X (SX)

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element.

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

-Publisher SEC

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Amounts owed to vendors and subcontractors that have been withheld because of retainage provisions in a contract.

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

-Publisher FASB

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Summary of Significant Accounting Policies (Details Textual) (USD $) In Millions, unless otherwise specified			12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 Minimum [Member]	Jun. 30, 2014 Maximum [Member]	Jun. 30, 2014 Building [Member]	Jun. 30, 2014 Construction Equipment [Member] Minimum [Member]	Jun. 30, 2014 Construction Equipment [Member] Maximum [Member]	Jun. 30, 2014 Transportation Equipment [Member] Minimum [Member]	Jun. 30, 2014 Transportation Equipment [Member] Maximum [Member]	Jun. 30, 2014 Office Equipment and Software [Member] Minimum [Member]	Jun. 30, 2014 Office Equipment and Software [Member] Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life of office equipment and software					40 years	3 years	15 years	3 years	5 years	3 years	10 years
Useful life of intangible assets			1 year	15 years
Summary of Significant Accounting Policies (Textual) [Abstract]
Restricted cash	$ 0.3	$ 0.3
Account receivables	30.0	19.9
Other assets	4.3	3.1
Accounts payable	$ 10.4	$ 3.1