QUARTERLY FINANCIAL DATA (UNAUDITED) - Summarized Quarterly Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2016		Jun. 30, 2015		Jun. 30, 2014
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 447,707	$ 442,565	$ 450,467	$ 450,130	$ 462,889	$ 453,960	$ 455,887	$ 464,551	$ 1,790,869		$ 1,837,287		$ 1,892,437
Cost of service and product revenues, excluding depreciation and amortization	259,623	260,046	267,056	260,804	264,615	261,947	268,049	268,664	1,047,529		1,063,275
Operating income (loss)	10,600	5,621	(2,883)	4,276	(446)	5,402	(671)	(754)	17,614		3,531		(34,958)
Loss from continuing operations					(1,943)	(4,763)	(16,663)	(9,843)	(11,316)		(33,212)		(139,874)
(Loss) income from discontinued operations, net of income taxes					(630)	0	0	0	0		(630)		1,353
Net loss	$ 5,562	$ (2,084)	$ (13,986)	$ (808)	$ (2,573)	$ (4,763)	$ (16,663)	$ (9,843)	$ (11,316)		$ (33,842)		$ (138,521)
Loss from continuing operations per share, basic and diluted (in dollars per share)					$ (0.04)	$ (0.09)	$ (0.30)	$ (0.18)	$ (0.23)		$ (0.60)		$ (2.48)
(Loss) income from discontinued operations per share, basic and diluted (in dollars per share)					(0.01)	0.00	0.00	0.00	0.00		(0.01)		0.02
Net (loss) income per share, basic and diluted (in dollars per share)	$ 0.12	$ (0.04)	$ (0.29)	$ (0.02)	$ (0.05)	$ (0.09)	$ (0.30)	$ (0.18)	$ (0.23)	[1]	$ (0.62)	[1]	$ (2.45)	[1]

[1] Total is a recalculation; line items calculated individually may not sum to total due to rounding.