Summary of Significant Accounting Policies (Details Textual) $ in Millions	12 Months Ended
Jun. 30, 2017 USD ($)
Property, Plant and Equipment [Line Items]
Restricted cash	$ 0.3
Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful life of intangible assets	1 year
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
International [Member]
Property, Plant and Equipment [Line Items]
Cash	$ 7.7

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash
-URI http://asc.fasb.org/extlink&oid=6506951

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.1)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Period Type:	instant

- Definition

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.

+ References

No definition available.

+ Details

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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

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.

+ References

No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.1)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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