Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2015

Accounting Policies [Abstract]

Summary of identified intangible assets (acquired above-market leases and in-place leases) and intangible liabilities (acquired below-market leases)

The following summarizes our identified intangible assets (acquired above-market leases and in-place leases) and intangible liabilities (acquired below-market leases) as of September 30, 2015 and December 31, 2014 (in thousands):

	September 30, 2015			December 31, 2014
Identified intangible assets (included in other assets):
Gross amount	$	939,518		$	664,297
Accumulated amortization	(392,854		)	(383,236		)
Net(1)	$	546,664		$	281,061
Identified intangible liabilities (included in deferred revenue):
Gross amount	$	866,561		$	655,755
Accumulated amortization	(476,272		)	(483,948		)
Net(1)	$	390,289		$	171,807

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(1) As of September 30, 2015, $0.2 million and $0.1 million of net intangible assets and net intangible liabilities, respectively, were reclassed to assets held for sale and liabilities related to assets held for sale.

Schedule of marketable securities

At September 30, 2015 and December 31, 2014, we held the following marketable securities (in thousands):

	September 30, 2015		December 31, 2014
Equity marketable securities	$	4,115	$	4,332
Mortgage-backed securities	42,317		35,097
Total marketable securities available-for-sale	$	46,432	$	39,429