Indebtedness (Tables)

12 Months Ended

Dec. 31, 2014

Indebtedness

Schedule of additional outstanding debt

				December 31, 2014				December 31, 2013
				Face		Unamortized		Face		Unamortized
Unsecured Debt	Coupon		Maturity	Amount		Discount		Amount		Discount
Senior notes	4.300	%	2016	$	250,000	$	551	$	250,000	$	1,085
Senior notes	3.250	%	2019		400,000		256		—		—
Senior notes	6.750	%	2020		200,000		1,133		200,000		1,348
Senior notes	6.750	%	2021		300,000		3,696		300,000		4,230
Senior notes	4.750	%	2024		250,000		737		—		—
Senior notes	5.625	%	2042		350,000		—		350,000		—
Total unsecured debt				$	1,750,000	$	6,373	$	1,100,000	$	6,663

Schedule of secured and other debt

				December 31, 2014				December 31, 2013
				Face		Unamortized		Face		Unamortized
Unsecured Debt	Coupon		Maturity	Amount		Discount		Amount		Discount
Senior notes	4.300	%	2016	$	250,000	$	551	$	250,000	$	1,085
Senior notes	3.250	%	2019		400,000		256		—		—
Senior notes	6.750	%	2020		200,000		1,133		200,000		1,348
Senior notes	6.750	%	2021		300,000		3,696		300,000		4,230
Senior notes	4.750	%	2024		250,000		737		—		—
Senior notes	5.625	%	2042		350,000		—		350,000		—
Total unsecured debt				$	1,750,000	$	6,373	$	1,100,000	$	6,663

	Principal Balance as of							Number of	Initial		Net Book Value of
	December 31,				Interest			Properties as	Cost of		Collateral
Secured and Other Debt	2014(1)		2013(1)		Rate		Maturity	Collateral	Collateral		2014		2013
Mortgages(2)	$	—	$	36,145	5.83	%	Jun 14	—	$	79,000	$	—	$	77,799
Mortgage (3)		29,362		30,177	6.015	%	Mar 15	1		99,000		94,245		96,354
Mortgage(2)		—		12,093	6.25	%	May 15	—		22,350		—		22,033
Mortgage		4,914		5,020	5.65	%	Jun 15	1		22,143		20,511		20,965
Mortgage(2)		—		11,465	6.37	%	Jul 15	—		14,849		—		14,197
Mortgage		12,479		12,773	5.66	%	Jul 15	3		26,606		24,948		25,457
Mortgages		2,728		2,805	5.88	%	Jul 15	1		15,397		13,991		14,384
Mortgage		6,353		6,579	5.81	%	Oct 15	1		9,650		9,927		9,474
Mortgage		4,403		4,502	5.81	%	Oct 15	1		8,600		8,211		8,168
Mortgage		52,000		52,000	5.64	%	Jan 16	1		70,495		64,175		64,904
Mortgages		6,243		6,363	5.97	%	Apr 16	1		10,272		9,552		9,811
Mortgage		85,085		87,928	5.92	%	Nov 16	2		157,500		150,036		151,928
Mortgage		12,184		12,366	6.25	%	Nov 16	1		22,102		21,255		21,672
Mortgage		5,625		5,720	5.86	%	Mar 17	1		11,280		11,004		11,292
Mortgage		44,687		45,753	6.54	%	May 17	8		62,500		53,878		54,702
Mortgages		11,059		11,245	6.15	%	Aug 17	1		16,400		14,846		15,180
Mortgage		9,195		9,425	6.73	%	Apr 18	1		15,100		11,103		11,299
Mortgage		288,519		292,611	6.71	%	Sep 19	17		617,161		245,593		252,404
Mortgage(4)		2,723		3,007	7.31	%	Jan 22	1		18,827		16,136		16,478
Mortgage(4)		1,345		1,482	7.85	%	Jan 22	—		—		—		—
Mortgage		15,318		—	6.28	%	Jul 22	1		32,658		25,848		—
Mortgage		3,348		3,444	6.25	%	Feb 33	—		5,200		4,483		4,588
Mortgage		9,205		9,353	5.95	%	Aug 37	1		11,425		8,865		9,080
Mortgage		4,594		4,672	4.375	%	Sep 43	1		8,059		7,459		7,632
Bonds(2)		—		14,700	5.875	%	Dec 27	—		34,307		—		25,619
Capital Leases		12,770		13,314	7.70	%	Apr 26	2		28,601		18,237		18,627
Total secured	$	624,139	$	694,942				47	$	1,419,482	$	834,302	$	964,047

(1) The principal balances are the amounts stated in the contracts. In accordance with U.S. generally accepted accounting principles, our carrying values and recorded interest expense may be different because of market conditions at the time we assumed certain of these debts. As of December 31, 2014 and 2013, the unamortized net premiums on certain of these mortgages were $2,937 and $4,485, respectively.

(2) In 2014 we repaid this debt.

(3) In 2015 we repaid this debt.

(4) These two mortgages are collateralized by one MOB property acquired in July 2008.

Schedule of required principal payments on outstanding debt

Required principal payments on our outstanding debt as of December 31, 2014, are as follows:

2015	$	71,541
2016		410,660
2017		65,941
2018		96,197
2019		671,757
Thereafter		1,488,043