Condensed Consolidated Statements of Operations (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues:
Recurring and other revenue	$ 281,053	$ 254,967	$ 557,302	$ 501,564
Costs and expenses:
Operating expenses (exclusive of depreciation and amortization shown separately below)	92,013	89,321	175,089	173,081
Selling expenses (exclusive of amortization of deferred commissions of $44,756, $40,167, $88,542 and $78,470, respectively, which are included in depreciation and amortization shown separately below)	57,926	65,659	101,517	124,902
General and administrative expenses	47,439	49,206	93,778	100,173
Depreciation and amortization	134,504	126,873	265,725	251,131
Restructuring expenses	0	4,141	0	4,141
Total costs and expenses	331,882	335,200	636,109	653,428
(Loss) income from operations	(50,829)	(80,233)	(78,807)	(151,864)
Other expenses (income):
Interest expense	65,817	60,327	129,565	119,117
Interest income	0	0	(23)	(31)
Other (income) expenses, net	(198)	4,731	(2,444)	(40,509)
(Loss) income before income tax expenses	(116,448)	(145,291)	(205,905)	(230,441)
Income tax benefit	(552)	(906)	(853)	(1,339)
Net (loss) income	$ (115,896)	$ (144,385)	$ (205,052)	$ (229,102)