Intangible Assets and Liabilities

In-place lease intangibles are included in In-place lease intangible assets in the consolidated financial statements. Above-market rent and below-market ground lease and other (as lessee) intangibles are included in Other intangible assets in the consolidated financial statements. Goodwill is included in Accounts receivable and other assets, net in the consolidated financial statements. Below-market rent and above-market ground lease (as lessor) intangibles are included in Below-market rent and other intangible liabilities, net in the consolidated financial statements.

Intangible assets and liabilities are summarized as follows (in thousands):



		June 30, 2018									December 31, 2017
	Amortization Period (Years)	Gross Carrying Amount			Accumulated Amortization			Net Carrying Amount			Gross Carrying Amount			Accumulated Amortization			Net Carrying Amount
Finite-Lived Intangible Assets
In-place lease	4 – 53	$	623,441		$	(229,845	)	$	393,596		$	629,961		$	(213,641	)	$	416,320
Above-market rent	7 – 40	96,656			(33,643		)	63,013			98,162			(31,533		)	66,629
Below-market ground leases and other	55 – 94	12,686			(842		)	11,844			12,842			(726		)	12,116
		732,783			(264,330		)	468,453			740,965			(245,900		)	495,065
Indefinite-Lived Intangible Assets
Goodwill		304			—			304			304			—			304
Total intangible assets		$	733,087		$	(264,330	)	$	468,757		$	741,269		$	(245,900	)	$	495,369

Finite-Lived Intangible Liabilities
Below-market rent	7 – 53	$	(81,747	)	$	23,865		$	(57,882	)	$	(82,259	)	$	22,121		$	(60,138	)
Above-market ground lease	49 – 88	(1,145		)	67			(1,078		)	(1,145		)	61			(1,084		)
Total intangible liabilities		$	(82,892	)	$	23,932		$	(58,960	)	$	(83,404	)	$	22,182		$	(61,222	)

Amortization of below-market rent and above-market rent intangibles is recorded as an adjustment to Rental income; amortization of below-market ground lease and other and above-market ground lease intangibles is included in Property expenses; and amortization of in-place lease intangibles is included in Depreciation and amortization expense on our consolidated financial statements. Amortization of below- and above-market rent intangibles, including the effect of foreign currency translation, decreased Rental income by $0.3 million for both the three months ended June 30, 2018 and 2017, respectively, and decreased Rental income by $0.7 million and increased Rental income by $18.5 million for the six months ended June 30, 2018 and 2017, respectively. The six months ended June 30, 2017 includes the impact of a below-market rent intangible liability write-off of $15.7 million recognized in conjunction with a lease modification that occurred during six months ended June 30, 2017 (Note 13). Net amortization expense of all of our other net intangible assets totaled $9.2 million and $10.5 million for the three months ended June 30, 2018 and 2017, respectively, and $18.5 million and $23.3 million for the six months ended June 30, 2018 and 2017, respectively.