Intangibles

Intangible assets primarily consist of lease-up intangibles, above market tenant lease intangibles and below market ground lease intangibles. Intangible liabilities primarily consist of below market lease intangibles and above market ground lease intangibles. The following tables summarize the Company’s intangible lease assets and liabilities (in thousands):



Intangible lease assets	September 30, 2018			December 31, 2017
Gross intangible lease assets	$	600,671		$	795,305
Accumulated depreciation and amortization	(294,866		)	(385,223		)
Intangible assets, net	$	305,805		$	410,082



Intangible lease liabilities	September 30, 2018			December 31, 2017
Gross intangible lease liabilities	$	107,687		$	126,212
Accumulated depreciation and amortization	(50,816		)	(73,633		)
Intangible liabilities, net	$	56,871		$	52,579