Indebtedness (Tables)

12 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Schedule of Outstanding Indebtedness

At December 31, 2014 and 2013, our outstanding indebtedness included the following (in thousands):

					December 31,
	Interest Rate at December 31, 2014			Maturity Date	2014		2013
Unsecured revolving credit facility, at LIBOR plus a premium	1.669	%		10/19/2015	$	—	$	235,000
Unsecured term loan, at LIBOR plus a premium	2.019	%		12/15/2016	400,000		500,000
Unsecured floating rate debt	2.019	%	(1)		$	400,000	$	735,000
6.40% Senior Unsecured Notes due 2015	—	%		—	$	—	$	33,440
5.75% Senior Unsecured Notes due 2015	5.75	%		11/1/2015	138,773		138,773
6.25% Senior Unsecured Notes due 2016	6.25	%		8/15/2016	139,104		139,104
6.25% Senior Unsecured Notes due 2017	6.25	%		6/15/2017	250,000		250,000
6.65% Senior Unsecured Notes due 2018	6.65	%		1/15/2018	250,000		250,000
7.50% Senior Unsecured Notes due 2019	—	%		—	—		125,000
5.875% Senior Unsecured Notes due 2020	5.875	%		9/15/2020	250,000		250,000
5.75% Senior Unsecured Notes due 2042	5.75	%		8/1/2042	175,000		175,000
Unsecured fixed rate debt	6.125	%	(1)		$	1,202,877	$	1,361,317
3920 Arkwright Road	—	%		—	$	—	$	12,040
6200 Glenn Carlson Drive	—	%		—	—		7,987
111 Monument Circle	5.235	%		3/1/2016	116,000		116,000
225 Water Street(2)	6.03	%		5/11/2016	40,059		40,334
111 East Wacker Drive	6.29	%		7/11/2016	142,666		144,522
2501 20th Place South	7.36	%		8/1/2016	10,267		10,804
Parkshore Plaza	5.67	%		5/1/2017	41,275		41,275
600 West Chicago Avenue	—	%		—	—		265,000
1735 Market Street(3)	5.66	%		12/2/2019	171,498		173,247
206 East 9th Street	5.69	%		1/5/2021	27,965		28,391
1320 Main Street	5.3	%		6/1/2021	38,979		39,598
33 Stiles Lane	6.75	%		3/1/2022	3,132		3,456
97 Newberry Road	5.71	%		3/1/2026	6,819		7,240
Secured fixed rate debt	5.767	%	(1)		$	598,660	$	889,894
					$	2,201,537	$	2,986,211
Unamortized net premiums and discounts					6,128		19,199
					$	2,207,665	$	3,005,410

(1) Represents weighted average interest rate at December 31, 2014.

(2) During the quarter ended June 30, 2014, we made the decision to cease making loan servicing payments on 225 Water Street in Jacksonville, Florida.  The first payment we determined not to make for this property was due on June 11, 2014.  The property is secured by a non-recourse mortgage loan, with a current principal balance of $40.1 million. On October 10, 2014, we were notified by the lender that our decision to cease making loan servicing payments created an event of default effective July 11, 2014 and the lender has exercised its option to accelerate the maturity of the unpaid balance of the loan. The lender has filed a suit of foreclosure for this property. Since July 11, 2014, we have accrued interest on this loan at 10.03%, to include the 4.0% of default interest.

(3) Interest on this loan is payable at a spread over LIBOR but has been fixed for the first seven years to December 1, 2016 by a cash flow hedge which sets the rate at approximately 5.66%.

Summary of Outstanding Senior Notes Purchased for Cash Pursuant to a Tender Offer

In March 2013, we purchased a total of $670.3 million of the outstanding principal amount of the following senior notes for $726.2 million, excluding transaction costs, pursuant to a tender offer:

Senior Note	Principal		Purchase Price
5.75% Senior Notes due February 15, 2014	$	145,612	$	148,746
6.40% Senior Notes due February 15, 2015	152,560		164,140
5.75% Senior Notes due November 1, 2015	111,227		121,047
6.25% Senior Notes due August 15, 2016	260,896		292,218
	$	670,295	$	726,151

Schedule of Required Principal Payments on Outstanding Debt

The required principal payments due during the next five years and thereafter under all of our outstanding debt at December 31, 2014 are as follows (in thousands):

2015	$	145,973
2016	848,708
2017	295,592
2018	254,614
2019	165,422
Thereafter	491,228
	$	2,201,537