Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Real estate assets, at cost:
Land	$ 476,717	$ 476,716
Buildings and improvements, less accumulated depreciation of $829,832 and $751,521 as of September 30, 2021 and December 31, 2020, respectively	2,429,537	2,371,521
Intangible lease assets, less accumulated amortization of $80,072 and $67,850 as of September 30, 2021 and December 31, 2020, respectively	68,873	90,594
Construction in progress	48,226	56,749
Real estate assets held for sale, net	62,104	60,454
Total real estate assets	3,085,457	3,056,034
Cash and cash equivalents	8,189	7,331
Tenant receivables, net of allowance for doubtful accounts of $4,965 and $4,553 as of September 30, 2021 and December 31, 2020, respectively	8,678	8,448
Straight-line rent receivables	159,871	148,797
Note receivable	118,500	118,500
Restricted cash and escrows	6,093	1,883
Prepaid expenses and other assets	24,915	23,277
Goodwill	98,918	98,918
Deferred lease costs, less accumulated amortization of $195,255 and $171,817 as of September 30, 2021 and December 31, 2020, respectively	241,765	272,394
Other assets held for sale, net	8,262	4,228
Total assets	3,760,648	3,739,810
Liabilities:
Unsecured debt, net of discount and unamortized debt issuance costs of $12,899 and $10,932 as of September 30, 2021 and December 31, 2020, respectively	1,665,101	1,594,068
Secured debt, net of premiums and unamortized debt issuance costs of $0 and $326 as of September 30, 2021 and December 31, 2020, respectively	0	27,936
Accounts payable, accrued expenses and accrued capital expenditures	127,675	111,997
Dividends payable	0	25,683
Deferred income	73,614	36,891
Intangible lease liabilities, less accumulated amortization of $33,619 and $27,344 as of September 30, 2021 and December 31, 2020, respectively	26,924	35,440
Interest rate swaps	6,715	9,834
Total liabilities	1,900,029	1,841,849
Commitments and Contingencies (Note 6)	0	0
Stockholders’ Equity:
Shares-in-trust, 150,000,000 shares authorized; none outstanding as of September 30, 2021 or December 31, 2020	0	0
Preferred stock, no par value, 100,000,000 shares authorized; none outstanding as of September 30, 2021 or December 31, 2020	0	0
Common stock, $0.01 par value, 750,000,000 shares authorized; 124,135,626 and 123,839,419 shares issued and outstanding as of September 30, 2021 and December 31, 2020, respectively	1,241	1,238
Additional paid-in capital	3,700,208	3,693,996
Cumulative distributions in excess of earnings	(1,822,441)	(1,774,856)
Accumulated other comprehensive loss	(20,036)	(24,100)
Piedmont stockholders’ equity	1,858,972	1,896,278
Noncontrolling interest	1,647	1,683
Total stockholders’ equity	1,860,619	1,897,961
Total liabilities and stockholders’ equity	$ 3,760,648	$ 3,739,810