Business Acquisitions, Goodwill and Other Intangible Assets - Net Assets Acquired (Details) - USD ($) $ in Thousands	Mar. 25, 2016	Nov. 30, 2015	Jun. 30, 2015
Identifiable intangible assets:
Goodwill	$ 75,337		$ 37,024
Pipeline Services
Business Acquisition [Line Items]
Cash and cash equivalents		$ 355
Accounts receivable		27,026
Prepaid expenses and other current assets		7,252
Property and equipment		3,552
Identifiable intangible assets:
Total identifiable intangible assets		44,500
Goodwill		62,778
Other non-current assets		20,683
Accounts payable		(2,534)
Accrued compensation and benefits		(7,215)
Other accrued liabilities		(5,160)
Current portion of long-term debt		(6,485)
Long-term debt, net of current portion		(18,547)
Non-controlling interest		(490)
Net assets acquired		125,715
Pipeline Services | Customer relationships and backlog
Identifiable intangible assets:
Total identifiable intangible assets		43,500
Pipeline Services | Internally developed software
Identifiable intangible assets:
Total identifiable intangible assets		1,000
Previously Reported | Pipeline Services
Business Acquisition [Line Items]
Cash and cash equivalents		355
Accounts receivable		26,406
Prepaid expenses and other current assets		7,276
Property and equipment		3,552
Identifiable intangible assets:
Total identifiable intangible assets		44,500
Goodwill		64,673
Other non-current assets		20,683
Accounts payable		(2,587)
Accrued compensation and benefits		(7,199)
Other accrued liabilities		(5,210)
Current portion of long-term debt		(6,447)
Long-term debt, net of current portion		(18,547)
Non-controlling interest		0
Net assets acquired		127,455
Previously Reported | Pipeline Services | Customer relationships and backlog
Identifiable intangible assets:
Total identifiable intangible assets		43,500
Previously Reported | Pipeline Services | Internally developed software
Identifiable intangible assets:
Total identifiable intangible assets		1,000
Adjustment | Pipeline Services
Business Acquisition [Line Items]
Cash and cash equivalents		0
Accounts receivable		(620)
Prepaid expenses and other current assets		24
Property and equipment		0
Identifiable intangible assets:
Total identifiable intangible assets		0
Goodwill		1,895
Other non-current assets		0
Accounts payable		(53)
Accrued compensation and benefits		16
Other accrued liabilities		(50)
Current portion of long-term debt		38
Long-term debt, net of current portion		0
Non-controlling interest		490
Net assets acquired		(1,740)
Adjustment | Pipeline Services | Customer relationships and backlog
Identifiable intangible assets:
Total identifiable intangible assets		0
Adjustment | Pipeline Services | Internally developed software
Identifiable intangible assets:
Total identifiable intangible assets		$ 0