Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
REVENUES
Rental income	$ 442,397	$ 416,978	$ 402,205
Other operating	7,992	7,759	9,750
Total Revenue	450,389	424,737	411,955
EXPENSES
Property operating	170,506	157,252	146,529
General and administrative	34,511	32,992	31,309
Acquisition and pursuit costs	738	2,180	4,496
Depreciation and amortization	164,201	142,472	127,690
Bad debt, net of recoveries	60	159	(21)
Total Expenses	370,016	335,055	310,003
OTHER INCOME (EXPENSE)
Gain on sales of real estate assets	41,665	39,524	41,044
Interest Expense	(52,804)	(56,402)	(57,351)
Loss on extinguishment of debt		(44,985)
Pension termination			(4)
Impairment of real estate assets		(5,385)	(121)
Interest and other income, net	537	658	51
Total other income (expense)	(10,602)	(66,590)	(16,381)
NET INCOME	$ 69,771	$ 23,092	$ 85,571
Basic earnings per common share (dollars per share)	$ 0.55	$ 0.18	$ 0.79
Diluted earnings per common share (dollars per share)	$ 0.55	$ 0.18	$ 0.78
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING - BASIC (in shares)	123,292,125	117,926,158	108,572,102
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING - DILUTED (in shares)	123,350,933	118,017,165	109,386,997