Business Acquisitions, Goodwill and Other Intangible Assets - Narrative (Details) - USD ($)		3 Months Ended		6 Months Ended
	Nov. 30, 2015	Dec. 30, 2016	Dec. 25, 2015	Dec. 30, 2016	Dec. 25, 2015	Jun. 30, 2016	Mar. 31, 2016
Business Acquisition [Line Items]
Goodwill		$ 75,337,000		$ 75,337,000		$ 75,337,000
Amortization period of identifiable intangible assets				7 years
Amortization of Intangible Assets		2,617,000	$ 1,076,000	$ 5,333,000	$ 1,916,000
Oil and Gas
Business Acquisition [Line Items]
Purchase price	$ 124,498,000
Cash paid	119,955,000
Second cash payment	7,500,000
Net working capital adjustment	2,957,000						$ 2,354,000
Goodwill	60,294,000
Total identifiable intangible assets	44,500,000
Cash and cash equivalents	355,000
Contract backlog | Oil and Gas
Business Acquisition [Line Items]
Intangible asset, useful life				1 year
Customer relationships and backlog | Oil and Gas
Business Acquisition [Line Items]
Total identifiable intangible assets	43,500,000
Internally developed software | Oil and Gas
Business Acquisition [Line Items]
Total identifiable intangible assets	$ 1,000,000
Intangible asset, useful life				5 years
Amortization period of identifiable intangible assets				5 years
Customer relationships
Business Acquisition [Line Items]
Amortization period of identifiable intangible assets				7 years
Customer relationships | Oil and Gas
Business Acquisition [Line Items]
Amortization period of identifiable intangible assets				6 years
Minimum | Customer relationships | Oil and Gas
Business Acquisition [Line Items]
Intangible asset, useful life				12 years
Maximum | Customer relationships | Oil and Gas
Business Acquisition [Line Items]
Intangible asset, useful life				15 years
Oil and Gas
Business Acquisition [Line Items]
Goodwill		$ 38,313,000		$ 38,313,000		$ 38,313,000