Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Summary of Significant Accounting Policies (Textual) [Abstract]
Restricted cash	$ 0.3	$ 0.3
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