Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Real estate assets:
Operating properties, net of accumulated depreciation of $421,495 and $275,977 in 2018 and 2017, respectively	$ 3,603,011	$ 3,332,619
Projects under development	24,217	280,982
Land	72,563	4,221
Total properties	3,699,791	3,617,822
Cash and cash equivalents	2,547	148,929
Restricted cash	148	56,816
Notes and accounts receivable, net of allowance for doubtful accounts of $629 and $535 in 2018 and 2017, respectively	13,821	14,420
Deferred rents receivable	83,116	58,158
Investment in unconsolidated joint ventures	161,907	101,414
Intangible assets, net	145,883	186,206
Other assets	39,083	20,854
Total assets	4,146,296	4,204,619
Total assets
Notes payable	1,062,570	1,093,228
Accounts payable and accrued expenses	110,159	137,909
Deferred income	41,266	37,383
Intangible liabilities, net of accumulated amortization of $42,473 and $28,960 in 2018 and 2017, respectively	56,941	70,454
Other liabilities	54,204	40,534
Total liabilities	1,325,140	1,379,508
Commitments and contingencies
Stockholders' investment:
Preferred stock, $1 par value, 20,000,000 shares authorized, 6,867,357 shares issued and outstanding in 2018 and 2017	6,867	6,867
Common stock, $1 par value, 700,000,000 shares authorized, 430,724,520 and 430,349,620 shares issued in 2018 and 2017, respectively	430,725	430,350
Additional paid-in capital	3,606,191	3,604,776
Treasury stock at cost, 10,339,735 and 10,329,082 shares in 2018 and 2017, respectively	(148,473)	(148,373)
Distributions in excess of cumulative net income	(1,129,445)	(1,121,647)
Distributions in excess of cumulative net income	2,765,865	2,771,973
Total stockholders' investment	55,291	53,138
Distributions in excess of cumulative net income	2,821,156	2,825,111
Total equity	$ 4,146,296	$ 4,204,619