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Segment Information (Details 2)	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Customer One [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	12.90%	9.70%	9.70%
Customer Two [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	9.90%	8.20%	7.60%
Customer Three [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	7.00%	8.20%	7.60%
Customer Four [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	4.40%	6.80%	7.20%
Customer Five [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		2.00%	7.10%
Customer Six [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue			5.00%
Customer Seven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue			4.60%
Customer Eight [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue			3.40%
Customer Nine [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue			2.10%
Customer Ten
Revenue, Major Customer [Line Items]
Percentage of Revenue			2.00%
Utility and Power Infrastructure | Customer One [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	41.30%	0.00%	0.00%
Utility and Power Infrastructure | Customer Two [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	42.70%	42.70%
Utility and Power Infrastructure | Customer Three [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	22.50%	0.00%	0.00%
Utility and Power Infrastructure | Customer Four [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Utility and Power Infrastructure | Customer Five [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		10.50%	0.00%
Utility and Power Infrastructure | Customer Six [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue			0.00%
Utility and Power Infrastructure | Customer Seven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue			0.20%
Utility and Power Infrastructure | Customer Eight [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue			19.50%
Utility and Power Infrastructure | Customer Nine [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue			11.70%
Utility and Power Infrastructure | Customer Ten
Revenue, Major Customer [Line Items]
Percentage of Revenue			11.30%
Process and Industrial Facilities | Customer One [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	25.40%	21.00%
Process and Industrial Facilities | Customer Two [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	33.30%	0.00%	0.20%
Process and Industrial Facilities | Customer Three [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	16.40%
Process and Industrial Facilities | Customer Four [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	15.10%
Process and Industrial Facilities | Customer Five [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		0.00%	0.00%
Process and Industrial Facilities | Customer Six [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue			0.00%
Process and Industrial Facilities | Customer Seven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue			1.50%
Process and Industrial Facilities | Customer Eight [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue			0.00%
Process and Industrial Facilities | Customer Nine [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue			0.00%
Process and Industrial Facilities | Customer Ten
Revenue, Major Customer [Line Items]
Percentage of Revenue			0.00%
Storage and Terminal Solutions | Customer One [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Storage and Terminal Solutions | Customer Two [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.10%	0.00%	0.00%
Storage and Terminal Solutions | Customer Three [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.10%	19.30%	0.00%
Storage and Terminal Solutions | Customer Four [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	11.20%	16.10%	0.60%
Storage and Terminal Solutions | Customer Five [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		0.00%	19.70%
Storage and Terminal Solutions | Customer Six [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue			13.80%
Storage and Terminal Solutions | Customer Seven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue			10.80%
Storage and Terminal Solutions | Customer Eight [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue			0.00%
Storage and Terminal Solutions | Customer Nine [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue			0.00%
Storage and Terminal Solutions | Customer Ten
Revenue, Major Customer [Line Items]
Percentage of Revenue			0.00%

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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- Definition

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+ References

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