Segment Information (Tables)

12 Months Ended

Jun. 30, 2018

Segment Reporting [Abstract]

Results of Operations

Results of Operations

(In thousands)

	Electrical Infrastructure			Oil Gas & Chemical			Storage Solutions			Industrial			Unallocated Corporate		Total
Fiscal Year ended June 30, 2018
Gross revenues	$	255,931		$	324,546		$	319,106		$	198,155		$	—	$	1,097,738
Less: inter-segment revenues	—			1,774			4,410			1			—		6,185
Consolidated revenues	255,931			322,772			314,696			198,154			—		1,091,553
Gross profit	18,300			33,423			25,778			14,435			—		91,936
Operating income (loss)	(16,531		)	8,798			(5,907		)	3,161			—		(10,479		)
Segment assets	161,207			111,064			149,695			58,816			77,251		558,033
Capital expenditures	493			1,514			3,346			—			3,358		8,711
Depreciation and amortization expense	4,359			5,904			6,623			3,461			—		20,347
Fiscal Year ended June 30, 2017
Gross revenues	$	373,384		$	247,423		$	483,254		$	103,449		$	—	$	1,207,510
Less: inter-segment revenues	—			6,900			1,558			1,543			—		10,001
Consolidated revenues	373,384			240,523			481,696			101,906			—		1,197,509
Gross profit	7,137			12,675			55,651			5,540			—		81,003
Operating income (loss)	(8,309		)	(8,783		)	22,928			(977		)	—		4,859
Segment assets	183,351			129,177			166,742			53,754			53,006		586,030
Capital expenditures	1,390			829			2,017			38			7,634		11,908
Depreciation and amortization expense	5,198			6,299			7,277			2,828			—		21,602
Fiscal Year ended June 30, 2016
Gross revenues	$	349,011		$	252,973		$	564,738		$	149,744		$	—	$	1,316,466
Less: inter-segment revenues	—			3,178			1,226			145			—		4,549
Consolidated revenues	349,011			249,795			563,512			149,599			—		1,311,917
Gross profit	29,301			18,553			67,843			10,294			—		125,991
Operating income (loss)	11,144			(3,503		)	33,449			(208		)	—		40,882
Segment assets	135,298			91,350			201,875			67,569			68,875		564,967
Capital expenditures	1,611			1,481			3,882			104			6,861		13,939
Depreciation and amortization expense	5,008			4,811			8,124			3,498			—		21,441

Summary of revenues and long lived assets according to geographic areas

Geographical information is as follows:

	Revenues
	Fiscal Years Ended
	June 30, 2018		June 30, 2017		June 30, 2016
	(In thousands)
United States	$	981,292	$	961,049	$	1,127,893
Canada	104,208		228,625		178,603
Other international	6,053		7,835		5,421
	$	1,091,553	$	1,197,509	$	1,311,917

	Long-Lived Assets
	June 30, 2018		June 30, 2017		June 30, 2016
	(In thousands)
United States	$	174,241	$	193,164	$	158,970
Canada	13,738		21,419		19,915
Other international	13,008		12,817		10,636
	$	200,987	$	227,400	$	189,521

Schedule of Revenue by Major Customers by Reporting Segments

Information about Significant Customers

	Significant Customers as a Percentage of Segment Revenues
	Consolidated		Electrical Infrastructure		Oil Gas & Chemical		Storage Solutions		Industrial
Fiscal Year ended June 30, 2018
Customer one	11.4	%	—	%	—	%	—	%	62.9	%
Customer two	8.6	%	—	%	29.0	%	—	%	—	%
Customer three	6.4	%	26.5	%	—	%	0.6	%	—	%
Customer four	6.0	%	25.4	%	—	%	—	%	—	%
Customer five	4.2	%	—	%	12.0	%	2.2	%	—	%
Customer six	3.2	%	—	%	10.8	%	—	%	—	%
Customer seven	3.2	%	—	%	—	%	10.9	%	—	%
Customer eight	3.0	%	12.9	%	—	%	—	%	—	%
Customer nine	2.7	%	—	%	—	%	—	%	14.7	%
Customer ten	2.3	%	10.0	%	—	%	—	%	—	%
Fiscal Year ended June 30, 2017
Customer one	19.5	%	—	%	—	%	48.5	%	—	%
Customer two	15.3	%	46.0	%	—	%	2.4	%	—	%
Customer three	5.2	%	—	%	25.8	%	—	%	—	%
Customer four	4.2	%	—	%	20.7	%	—	%	—	%
Customer five	4.0	%	12.7	%	—	%	—	%	—	%
Customer six	2.7	%	—	%	—	%	—	%	31.7	%
Customer seven	2.2	%	—	%	—	%	—	%	25.8	%
Fiscal Year ended June 30, 2016
Customer one	14.8	%	38.9	%	—	%	10.2	%	—	%
Customer two	10.6	%	—	%	—	%	24.7	%	—	%
Customer three	8.3	%	—	%	—	%	19.3	%	—	%
Customer four	4.4	%	16.6	%	—	%	—	%	—	%
Customer five	4.2	%	—	%	—	%	—	%	36.9	%
Customer six	3.9	%	—	%	20.2	%	—	%	—	%
Customer seven	3.8	%	14.4	%	—	%	—	%	—	%
Customer eight	3.4	%	12.7	%	—	%	—	%	—	%
Customer nine	2.3	%	—	%	—	%	—	%	20.1	%
Customer ten	2.1	%	—	%	11.2	%	—	%	—	%
Customer eleven	1.6	%	—	%	—	%	—	%	14.0	%