Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Real estate assets, at cost:
Land	$ 523,994	$ 521,186
Buildings and improvements, less accumulated depreciation of $797,222 and $728,134 as of September 30, 2018 and December 31, 2017, respectively	2,309,803	2,325,282
Intangible lease assets, less accumulated amortization of $84,268 and $99,145 as of September 30, 2018 and December 31, 2017, respectively	65,527	77,805
Construction in progress	22,753	11,681
Real estate assets held for sale, net	113,918	448,788
Total real estate assets	3,035,995	3,384,742
Amounts due from unconsolidated joint ventures	0	10
Cash and cash equivalents	6,807	7,382
Tenant receivables, net of allowance for doubtful accounts of $599 and $539 as of September 30, 2018 and December 31, 2017, respectively	10,522	12,139
Straight-line rent receivables	168,745	154,384
Note receivable	3,200	0
Restricted cash and escrows	1,374	1,373
Prepaid expenses and other assets	31,470	21,222
Goodwill	98,918	98,918
Interest rate swaps	4,069	688
Deferred lease costs, less accumulated amortization of $177,412 and $181,579 as of September 30, 2018 and December 31, 2017, respectively	250,038	257,916
Other assets held for sale, net	12,752	61,193
Total assets	3,623,890	3,999,967
Liabilities:
Unsecured debt, net of discount and unamortized debt issuance costs of $10,382 and $7,689 as of September 30, 2018 and December 31, 2017, respectively	1,524,618	1,535,311
Secured debt, net of premiums and unamortized debt issuance costs of $720 and $946 as of September 30, 2018 and December 31, 2017, respectively	190,753	191,616
Accounts payable, accrued expenses, dividends payable, and accrued capital expenditures	109,087	216,653
Deferred income	27,450	29,582
Intangible lease liabilities, less accumulated amortization of $56,876 and $55,847 as of September 30, 2018 and December 31, 2017, respectively	37,986	38,458
Interest rate swaps	0	1,478
Other liabilities held for sale, net	0	380
Total liabilities	1,889,894	2,013,478
Commitments and Contingencies
Stockholders’ Equity:
Shares-in-trust, 150,000,000 shares authorized; none outstanding as of September 30, 2018 or December 31, 2017	0	0
Preferred stock, no par value, 100,000,000 shares authorized; none outstanding as of September 30, 2018 or December 31, 2017	0	0
Common stock, $.01 par value, 750,000,000 shares authorized; 128,371,442 and 142,358,940 shares issued and outstanding as of September 30, 2018 and December 31, 2017, respectively	1,284	1,424
Additional paid-in capital	3,682,209	3,677,360
Cumulative distributions in excess of earnings	(1,964,135)	(1,702,281)
Other comprehensive income	12,851	8,164
Piedmont stockholders’ equity	1,732,209	1,984,667
Noncontrolling interest	1,787	1,822
Total stockholders’ equity	1,733,996	1,986,489
Total liabilities and stockholders’ equity	$ 3,623,890	$ 3,999,967