Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Millions	12 Months Ended
Jun. 30, 2015	Jun. 30, 2014
Summary of Significant Accounting Policies (Textual) [Abstract]
Restricted cash	$ 0.3	$ 0.3
Account receivables	25.2	30.0
Other assets	2.8	4.3
Accounts payable	$ 10.2	$ 10.4
Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful life of intangible assets	1 year 6 months
Maximum [Member]
Property, Plant and Equipment [Line Items]
Useful life of intangible assets	15 years
Building [Member]
Property, Plant and Equipment [Line Items]
Depreciable life of office equipment and software	40 years
Construction Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life of office equipment and software	3 years
Construction Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life of office equipment and software	15 years
Transportation Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life of office equipment and software	3 years
Transportation Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life of office equipment and software	5 years
Office Equipment and Software [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life of office equipment and software	3 years
Office Equipment and Software [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life of office equipment and software	10 years

Summary of significant accounting policies.

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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. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 910

-SubTopic 310

-Section 50

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Amount of billed or unbilled claims or 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. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

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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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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