Intangible Assets and Below Market Lease Liabilities (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Total Intangible Assets and Below Market Lease Liabilities

The following table sets forth total intangible assets and acquisition-related below market lease liabilities, net of accumulated amortization:

	December 31,
	2017			2016
Assets:
Deferred leasing costs (including lease incentives and above market lease and in-place lease acquisition-related intangible assets)	$	344,191		$	353,581
Less accumulated amortization	(143,512		)	(140,081		)
	$	200,679		$	213,500
Liabilities (in accounts payable, accrued expenses and other liabilities):
Acquisition-related below market lease liabilities	$	59,947		$	61,221
Less accumulated amortization	(28,214		)	(23,074		)
	$	31,733		$	38,147

Amortization of Intangible Assets and Below Market Lease Liabilities

The following table sets forth amortization of intangible assets and below market lease liabilities:

	Year Ended December 31,
	2017			2016			2015
Amortization of deferred leasing costs and acquisition-related intangible assets (in depreciation and amortization)	$	41,187		$	44,968		$	43,332
Amortization of lease incentives (in rental and other revenues)	$	1,765		$	1,779		$	1,493
Amortization of acquisition-related intangible assets (in rental and other revenues)	$	2,921		$	3,851		$	5,062
Amortization of acquisition-related intangible assets (in rental property and other expenses)	$	557		$	557		$	557
Amortization of acquisition-related below market lease liabilities (in rental and other revenues)	$	(6,415	)	$	(8,183	)	$	(7,065	)

Scheduled Future Amortization of Intangible Assets and Below Market Lease Liabilities

The following table sets forth scheduled future amortization of intangible assets and below market lease liabilities:

Years Ending December 31,	Amortization of Deferred Leasing Costs and Acquisition-Related Intangible Assets (in Depreciation and Amortization)		Amortization of Lease Incentives (in Rental and Other Revenues)		Amortization of Acquisition-Related Intangible Assets (in Rental and Other Revenues)		Amortization of Acquisition-Related Intangible Assets (in Rental Property and Other Expenses)		Amortization of Acquisition-Related Below Market Lease Liabilities (in Rental and Other Revenues)
2018	$	36,566	$	1,586	$	1,659	$	553	$	(5,911	)
2019	31,032		1,434		1,275		553		(5,454		)
2020	26,614		1,171		959		518		(5,193		)
2021	22,262		948		632		—		(4,383		)
2022	18,098		734		462		—		(3,269		)
Thereafter	48,182		4,033		1,408		—		(7,523		)
	$	182,754	$	9,906	$	6,395	$	1,624	$	(31,733	)
Weighted average remaining amortization periods as of December 31, 2017 (in years)	7.6		9.9		6.5		3.0		6.6