Business Acquisitions, Goodwill and Other Intangible Assets - Narrative (Details) - USD ($)		3 Months Ended
	Nov. 30, 2015	Sep. 30, 2016	Sep. 25, 2015	Jun. 30, 2016	Mar. 31, 2016
Business Acquisition [Line Items]
Goodwill		$ 75,337,000		$ 75,337,000
Amortization period of identifiable intangible assets		7 years
Gross revenue		$ 180,851,000	$ 135,459,000
Net service revenue		124,305,000	100,163,000
Amortization of Intangible Assets		$ 2,716,000	$ 840,000
Oil and Gas
Business Acquisition [Line Items]
Goodwill	$ 60,294,000
Purchase price	124,498,000
Cash paid	119,955,000
Cash and cash equivalents	355,000
Second cash payment	7,500,000
Business Combination, Net Working Capital Adjustment	2,957,000				$ 2,354,000
Total identifiable intangible assets	44,500,000
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]
Intangible asset, useful life		5 years
Amortization period of identifiable intangible assets		5 years
Total identifiable intangible assets	$ 1,000,000
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 | Contract backlog | Oil and Gas
Business Acquisition [Line Items]
Intangible asset, useful life		1 year
Minimum | Customer relationships | Oil and Gas
Business Acquisition [Line Items]
Intangible asset, useful life		15 years
Maximum | Customer relationships | Oil and Gas
Business Acquisition [Line Items]
Intangible asset, useful life		12 years
Oil and Gas
Business Acquisition [Line Items]
Goodwill		$ 38,313,000		$ 38,313,000