Segment Information - Adjusted EBITDA (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Segment Reporting [Abstract]
Consolidated net income	$ 3,613	$ 6,990	$ 8,693	$ 11,883
Depreciation and amortization	31,452	32,405	97,490	97,985
Interest expense	14,896	17,631	49,641	54,042
Income tax expense(benefit)	6,178	3,309	6,753	6,212
EBITDA	56,139	60,335	162,577	170,122
Transaction costs	371	1,914	2,785	6,098
Stock based and deferred compensation	104	517	27,064	1,403
Debt extinguishment charges	64		3,931
Purchase accounting adjustments	255	1,171	878	2,024
Restructuring related costs	693	1,700	4,269	5,490
Loss on sale of fixed assets	236	237	598	645
Foreign currency gains (losses)	510	(9,259)	3,850	(13,835)
Other adjustments to EBITDA	(21)	703	(999)	5,001
Adjusted EBITDA	$ 58,351	$ 57,318	$ 204,953	$ 176,948