Segment Information (Details 2)	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Customer One [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	9.70%	9.70%	11.40%
Customer Two [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	8.20%	7.60%	8.60%
Customer Three [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	8.20%	7.60%	6.40%
Customer Four [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	6.80%	7.20%	6.00%
Customer Five [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	4.10%	7.10%	4.20%
Customer Six [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	3.80%	5.00%	3.20%
Customer Seven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	3.20%	4.60%	3.20%
Customer Eight [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	3.00%	3.40%	3.00%
Customer Nine [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	2.40%	3.10%	2.70%
Customer Ten
Revenue, Major Customer [Line Items]
Percentage of Revenue	2.00%	3.00%	2.30%
Customer Eleven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	1.80%	2.10%
Customer Twelve
Revenue, Major Customer [Line Items]
Percentage of Revenue	1.70%
Customer Thirteen
Revenue, Major Customer [Line Items]
Percentage of Revenue	1.50%
Electrical Infrastructure [Member] | Customer One [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Electrical Infrastructure [Member] | Customer Two [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	49.00%	0.00%
Electrical Infrastructure [Member] | Customer Three [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	26.50%
Electrical Infrastructure [Member] | Customer Four [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	25.40%
Electrical Infrastructure [Member] | Customer Five [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Electrical Infrastructure [Member] | Customer Six [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Electrical Infrastructure [Member] | Customer Seven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.30%	0.00%
Electrical Infrastructure [Member] | Customer Eight [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	22.40%	12.90%
Electrical Infrastructure [Member] | Customer Nine [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Electrical Infrastructure [Member] | Customer Ten
Revenue, Major Customer [Line Items]
Percentage of Revenue	19.70%	0.00%	10.00%
Electrical Infrastructure [Member] | Customer Eleven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	16.10%	13.40%
Electrical Infrastructure [Member] | Customer Twelve
Revenue, Major Customer [Line Items]
Percentage of Revenue	14.80%
Electrical Infrastructure [Member] | Customer Thirteen
Revenue, Major Customer [Line Items]
Percentage of Revenue	14.60%
Oil Gas & Chemical [Member] | Customer One [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Oil Gas & Chemical [Member] | Customer Two [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	29.00%
Oil Gas & Chemical [Member] | Customer Three [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Oil Gas & Chemical [Member] | Customer Four [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	30.90%	0.00%
Oil Gas & Chemical [Member] | Customer Five [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	17.80%	0.00%	12.00%
Oil Gas & Chemical [Member] | Customer Six [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	20.10%	0.00%	10.80%
Oil Gas & Chemical [Member] | Customer Seven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	10.70%	3.10%	0.00%
Oil Gas & Chemical [Member] | Customer Eight [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	16.70%	0.00%	0.00%
Oil Gas & Chemical [Member] | Customer Nine [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Oil Gas & Chemical [Member] | Customer Ten
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Oil Gas & Chemical [Member] | Customer Eleven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%
Oil Gas & Chemical [Member] | Customer Twelve
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%
Oil Gas & Chemical [Member] | Customer Thirteen
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%
Storage Solutions [Member] | Customer One [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Storage Solutions [Member] | Customer Two [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	16.20%	0.00%	0.00%
Storage Solutions [Member] | Customer Three [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	16.10%	0.00%	0.60%
Storage Solutions [Member] | Customer Four [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	13.40%	0.60%	0.00%
Storage Solutions [Member] | Customer Five [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	1.70%	19.40%	2.20%
Storage Solutions [Member] | Customer Six [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.20%	13.60%	0.00%
Storage Solutions [Member] | Customer Seven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	2.50%	10.60%	10.90%
Storage Solutions [Member] | Customer Eight [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Storage Solutions [Member] | Customer Nine [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Storage Solutions [Member] | Customer Ten
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Storage Solutions [Member] | Customer Eleven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.10%	0.00%
Storage Solutions [Member] | Customer Twelve
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%
Storage Solutions [Member] | Customer Thirteen
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%
Industrial [Member] | Customer One [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	47.10%	38.40%	62.90%
Industrial [Member] | Customer Two [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.40%	0.00%
Industrial [Member] | Customer Three [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	30.10%	0.00%
Industrial [Member] | Customer Four [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Industrial [Member] | Customer Five [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Industrial [Member] | Customer Six [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Industrial [Member] | Customer Seven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Industrial [Member] | Customer Eight [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Industrial [Member] | Customer Nine [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	11.40%	12.30%	14.70%
Industrial [Member] | Customer Ten
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	12.00%	0.00%
Industrial [Member] | Customer Eleven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.70%	0.00%
Industrial [Member] | Customer Twelve
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.90%
Industrial [Member] | Customer Thirteen
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%