Segment Information (Details Textual)	12 Months Ended
	Jun. 30, 2017 Rate	Jun. 30, 2016 Rate	Jun. 30, 2015 Rate
Customer One [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	19.50%	14.80%	12.30%
Customer Two [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	15.30%	10.60%	7.00%
Customer Three [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	5.20%	8.30%	6.50%
Customer Four [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	4.20%	4.40%	5.70%
Customer Five [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	4.00%	4.20%	4.80%
Customer Six [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	2.70%	3.90%	4.00%
Customer Seven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	2.20%	3.80%	3.90%
Customer Eight [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		3.40%	3.10%
Customer Nine [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		2.30%	2.80%
Customer Ten [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		2.10%	2.80%
Customer Eleven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		1.60%	2.40%
Electrical Infrastructure [Member] | Customer One [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	38.90%	0.00%
Electrical Infrastructure [Member] | Customer Two [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	46.00%	0.00%	0.00%
Electrical Infrastructure [Member] | Customer Three [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	12.70%
Electrical Infrastructure [Member] | Customer Four [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	16.60%	0.00%
Electrical Infrastructure [Member] | Customer Five [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	12.70%	0.00%	25.10%
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%	14.40%	0.00%
Electrical Infrastructure [Member] | Customer Eight [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		12.70%	16.30%
Electrical Infrastructure [Member] | Customer Nine [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		0.00%	14.70%
Electrical Infrastructure [Member] | Customer Ten [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		0.00%	0.00%
Electrical Infrastructure [Member] | Customer Eleven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		0.00%	12.70%
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%	0.00%
Oil Gas & Chemical [Member] | Customer Three [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	25.80%	0.00%	0.00%
Oil Gas & Chemical [Member] | Customer Four [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	20.70%	0.00%	0.00%
Oil Gas & Chemical [Member] | Customer Five [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Oil Gas & Chemical [Member] | Customer Six [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	20.20%	17.70%
Oil Gas & Chemical [Member] | Customer Seven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Oil Gas & Chemical [Member] | Customer Eight [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		0.00%	0.00%
Oil Gas & Chemical [Member] | Customer Nine [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		0.00%	0.00%
Oil Gas & Chemical [Member] | Customer Ten [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		11.20%	12.30%
Oil Gas & Chemical [Member] | Customer Eleven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		0.00%	0.00%
Storage Solutions [Member] | Customer One [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	48.50%	10.20%	33.00%
Storage Solutions [Member] | Customer Two [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	2.40%	24.70%	0.00%
Storage Solutions [Member] | Customer Three [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	19.30%	10.90%
Storage Solutions [Member] | Customer Four [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Storage Solutions [Member] | Customer Five [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Storage Solutions [Member] | Customer Six [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Storage Solutions [Member] | Customer Seven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Storage Solutions [Member] | Customer Eight [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		0.00%	0.00%
Storage Solutions [Member] | Customer Nine [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		0.00%	0.00%
Storage Solutions [Member] | Customer Ten [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		0.00%	0.00%
Storage Solutions [Member] | Customer Eleven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		0.00%	0.00%
Industrial [Member] | Customer One [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Industrial [Member] | Customer Two [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	34.00%
Industrial [Member] | Customer Three [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	0.00%
Industrial [Member] | Customer Four [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	0.00%	27.60%
Industrial [Member] | Customer Five [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	0.00%	36.90%	0.00%
Industrial [Member] | Customer Six [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	31.70%	0.00%	0.00%
Industrial [Member] | Customer Seven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue	25.80%	0.00%	19.00%
Industrial [Member] | Customer Eight [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		0.00%	0.00%
Industrial [Member] | Customer Nine [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		20.10%	0.00%
Industrial [Member] | Customer Ten [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		0.00%	0.00%
Industrial [Member] | Customer Eleven [Member]
Revenue, Major Customer [Line Items]
Percentage of Revenue		14.00%	0.00%