Consolidated Statements of Operations - USD ($) shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Revenue	$ 143,800,000	$ 111,200,000	$ 391,700,000	$ 286,000,000
Costs and expenses:
Property operating expenses	54,600,000	42,200,000	139,700,000	107,300,000
Sales and marketing	4,700,000	3,200,000	12,900,000	8,900,000
General and administrative	13,900,000	12,500,000	42,800,000	31,500,000
Depreciation and amortization	50,600,000	39,100,000	134,600,000	101,600,000
Transaction and acquisition integration costs	1,200,000	1,800,000	3,900,000	11,500,000
Asset impairments and loss on disposal	0	4,900,000	0	13,500,000
Total costs and expenses	125,000,000	103,700,000	333,900,000	274,300,000
Operating income	18,800,000	7,500,000	57,800,000	11,700,000
Interest expense	13,800,000	12,100,000	37,400,000	29,200,000
Net income (loss) before income taxes	5,000,000	(4,600,000)	20,400,000	(17,500,000)
Income tax expense	(600,000)	(700,000)	(1,300,000)	(1,500,000)
Net income (loss)	4,400,000	(5,300,000)	19,100,000	(19,000,000)
Noncontrolling interest net loss	0	(700,000)	0	(4,600,000)
Net income (loss) attributed to common stockholders	$ 4,400,000	$ (4,600,000)	$ 19,100,000	$ (14,400,000)
Basic weighted average common shares outstanding (in shares)	80.6	64.3	77.0	50.6
Diluted weighted average common shares outstanding (in shares)	81.3	64.3	77.6	50.6
Income (loss) per share - basic and diluted (in dollars per share)	$ 0.05	$ (0.08)	$ 0.24	$ (0.30)
Dividends declared per share (in dollars per share)	$ 0.38	$ 0.315	$ 1.14	$ 0.945