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Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and Cash Equivalents, at Carrying Value	$ 54,812	$ 52,371
Restricted Cash	25,000	25,000
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 79,812	$ 77,371	$ 83,878	$ 100,036
Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful life of intangible assets	6 years
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]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash	$ 10,400