Operating Segments - Segment Detail (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 30, 2016	Dec. 25, 2015	Dec. 30, 2016	Dec. 25, 2015
Segment Reporting Information [Line Items]
Gross revenue	$ 198,662	$ 157,743	$ 379,513	$ 293,202
Net service revenue	127,356	111,382	251,661	211,545
Segment profit from reportable operating segments	7,036	6,698	12,993	14,371
Corporate shared services	(13,969)	(10,582)	(28,915)	(20,535)
Stock-based compensation expense	(2,286)	(1,511)	(3,743)	(2,780)
Business Combination, Separately Recognized Transactions, Additional Disclosures, Acquisition Cost Expensed	0	(1,240)	0	(2,118)
Depreciation and amortization	(4,371)	(2,780)	(8,875)	(5,044)
Interest income	286	137	564	137
Interest expense	(841)	(461)	(1,686)	(489)
Income from operations before taxes	6,481	6,374	11,871	14,019
Acquisition and integration expenses	0	(1,240)	0	(2,118)
Oil and Gas
Segment Reporting Information [Line Items]
Segment profit from reportable operating segments			2,838
Operating Segments
Segment Reporting Information [Line Items]
Gross revenue	196,947	156,289	377,428	291,338
Net service revenue	126,563	110,913	250,527	210,378
Segment profit from reportable operating segments	23,626	20,389	46,324	40,575
Business Combination, Separately Recognized Transactions, Additional Disclosures, Acquisition Cost Expensed	0	0	0	0
Depreciation and amortization	(4,036)	(2,422)	(8,202)	(4,273)
Reconciling Items
Segment Reporting Information [Line Items]
Gross revenue	1,715	1,454	2,085	1,864
Net service revenue	793	469	1,134	1,167
Depreciation and amortization	$ (335)	$ (358)	$ (673)	$ (771)