Operating Segments - Segment Detail (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Jun. 30, 2016	Mar. 25, 2016	Dec. 25, 2015	Sep. 25, 2015	Jun. 30, 2015	Mar. 27, 2015	Dec. 26, 2014	Sep. 26, 2014	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Gross revenue		$ 169,532	$ 158,130	$ 157,743	$ 135,459	$ 149,087	$ 130,777	$ 143,228	$ 123,025	$ 620,864	$ 546,117	$ 475,677
Net service revenue		132,331	121,253	111,382	100,163	114,567	100,994	99,838	92,619	465,129	408,018	354,956
Segment profit		10,261	(23,302)	6,698	7,673	10,703	7,149	6,866	5,992	1,330	30,710	20,921
Corporate shared services(2)	[1]									(46,431)	(47,469)	(42,549)
Goodwill impairment										(21,981)	0	0
Allocated Share-based Compensation Expense										(5,554)	(5,149)	(4,658)
Depreciation and amortization										(14,725)	(9,316)	(8,800)
Interest income										840	0	0
Interest expense										(2,707)	(134)	(169)
Income (loss) from operations before taxes and equity in earnings		$ 9,630	$ (24,186)	$ 6,374	$ 7,645	$ 10,694	$ 7,076	$ 6,845	$ 5,961	(537)	30,576	20,752
Acquisition and integration expense										6,571	0	0
Operating Segments
Segment Reporting Information [Line Items]
Gross revenue										616,292	541,932	469,846
Net service revenue										462,359	404,592	350,276
Segment profit										79,907	85,388	70,546
Depreciation and amortization										(13,241)	(7,256)	(6,382)
Acquisition and integration expense										3,444	0	0
Reconciling Items
Segment Reporting Information [Line Items]
Gross revenue										4,572	4,185	5,831	[2]
Net service revenue	[2]									2,770	3,426	4,680
Business Combination, Separately Recognized Transactions, Additional Disclosures, Acquisition Cost Expensed										(3,127)	0	0
Depreciation and amortization										(1,484)	(2,060)	(2,418)
Energy
Segment Reporting Information [Line Items]
Gross revenue										182,586	168,564	160,651
Net service revenue										150,636	145,690	132,795
Segment profit										$ 33,666	$ 32,124	$ 26,468

[1] Corporate shared services consists of centrally managed functions in the following areas: accounting, treasury, information technology, legal, human resources, marketing, internal audit and executive management such as the CEO and various executives. These costs and other items of a general corporate nature are not allocated to the Company's four operating segments.

[2] Amounts represent certain unallocated corporate amounts not considered in the CODM's evaluation of operating segment performance.