CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands		Dec. 31, 2016	Dec. 31, 2015
Assets:
Intangible lease assets, accumulated amortization		$ 109,152	$ 93,012
Tenant receivables, allowance for doubtful accounts		197	83
Deferred lease costs, accumulated amortization		178,468	146,700
Liabilities:
Intangible lease liabilities, accumulated amortization		$ 49,225	$ 42,315
Stockholders' Equity:
Shares-in-trust, shares authorized		150,000,000	150,000,000
Shares-in-trust, shares outstanding		0	0
Preferred stock, par value (in dollars per share)		$ 0	$ 0
Preferred stock, shares authorized		100,000,000	100,000,000
Preferred stock, shares outstanding		0	0
Common stock, par value (in dollars per share)		$ 0.01	$ 0.01
Common stock, shares authorized		750,000,000	750,000,000
Common stock, shares issued		145,235,313	145,511,644
Common stock, shares outstanding		145,235,313	145,511,644
Unsecured Debt [Member]
Liabilities:
Net of discount, premiums and unamortized debt issuance costs	[1]	$ 10,269	$ 12,779
Secured Debt [Member]
Liabilities:
Net of discount, premiums and unamortized debt issuance costs	[1]	(1,161)	(1,319)
Building and building improvements [Member]
Assets:
Buildings and improvements, accumulated depreciation		$ 944,573	$ 889,857

[1] Other than the $35 Million Fixed-Rate Loan, all of Piedmont’s outstanding debt as of December 31, 2016 and 2015 is interest-only.