Condensed Consolidated Statements of Income (Loss) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenue:
Rental	$ 56,760	$ 37,944	$ 145,618	$ 109,207
Related party revenue:
Management fees and interest income from loans	1,665	3,485	4,929	9,146
Other	21	39	64	112
Total revenue	58,446	41,468	150,611	118,465
Expenses:
Real estate operating expenses	13,991	9,642	35,877	26,938
Real estate taxes and insurance	8,801	5,761	22,704	16,946
Depreciation and amortization	22,163	13,367	54,863	39,031
Selling, general and administrative	3,477	3,141	9,213	7,454
Interest	5,474	4,187	13,856	11,901
Total expenses	53,906	36,098	136,513	102,270
Income before interest income, equity in earnings (losses) of non-consolidated REITs and taxes	4,540	5,370	14,098	16,195
Interest income	5	5	10	17
Equity in earnings (losses) of non-consolidated REITs	(431)	176	(814)	1,061
Income before taxes on income	4,114	5,551	13,294	17,273
Taxes on income	118	80	352	236
Income from continuing operations	3,996	5,471	12,942	17,037
Discontinued operations:
Income (loss) from discontinued operations, net of income tax	98	(169)	294	(563)
Provision for loss on property held for sale of $14,300 less applicable income tax		(14,300)		(14,300)
Total discontinued operations	98	(14,469)	294	(14,863)
Net income (loss)	$ 4,094	$ (8,998)	$ 13,236	$ 2,174
Weighted average number of shares outstanding, basic and diluted (in shares)	100,187	82,937	91,720	82,937
Earnings per share, basic and diluted, attributable to:
Continuing operations (in dollars per share)	$ 0.04	$ 0.07	$ 0.14	$ 0.21
Discontinued operations (in dollars per share)	$ 0.00	$ (0.18)	$ 0.00	$ (0.18)
Net income (loss) per share, basic and diluted (in dollars per share)	$ 0.04	$ (0.11)	$ 0.14	$ 0.03