Indebtedness (Tables)

6 Months Ended

Jun. 30, 2016

Debt Disclosure [Abstract]

Fair Value, Liabilities Measured on a Recurring Basis, Disclosure Only

The following table summarizes the book value and changes in the fair value of our debt for the six months endedJune 30, 2016 (in thousands):

	Book Value at 12/31/2015		Book Value at 6/30/2016		Fair Value at 12/31/2015		Issuances and Assumptions		Payments/Payoffs			Adjustments to Fair Value			Fair Value at 6/30/2016
Fixed rate secured debt	$	736,896	$	387,740	$	789,095	$	—	$	(348,702	)	$	(1,346	)	$	439,047
Variable rate secured debt	3,100		3,100		3,100		—		—			—			3,100
Unsecured debt	2,530,743		2,832,529		2,624,795		375,000		(73,214		)	80,343			3,006,924
Unsecured line of credit	71,000		—		70,852		—		(71,000		)	148			—
Total	$	3,341,739	$	3,223,369	$	3,487,842	$	375,000	$	(492,916	)	$	79,145		$	3,449,071
Less: Deferred financing costs	21,598		25,588
Total indebtedness as reported on the consolidated balance sheets	$	3,320,141	$	3,197,781

Unsecured Line of Credit

Our unsecured line of credit at June 30, 2016 is described as follows (in thousands):

Description	Maximum Capacity		Maturity Date	Outstanding Balance at June 30, 2016
Unsecured Line of Credit - Partnership	$	1,200,000	January 2019	$	—