Intangibles

The following is a summary of our intangibles as of December 31, 2013 and 2012:



	December 31, 2013				December 31, 2012
	Balance			Remaining Weighted Average Amortization Period in Years	Balance			Remaining Weighted Average Amortization Period in Years
	(Dollars in thousands)
Intangible assets:
Above market lease intangibles	$	214,353		8.4	$	215,367		9.5
In-place and other lease intangibles	795,829			24.1	766,337			23.3
Goodwill and other intangibles	489,346			8.6	523,830			8.6
Accumulated amortization	(458,919		)	N/A	(352,692		)	N/A
Net intangible assets	$	1,040,609		19.8	$	1,152,842		19.3
Intangible liabilities:
Below market lease intangibles	$	429,199		14.7	$	429,907		15.3
Other lease intangibles	32,103			24.8	28,966			15.8
Accumulated amortization	(119,549		)	N/A	(78,560		)	N/A
Purchase option intangibles	29,294			N/A	36,048			N/A
Net intangible liabilities	$	371,047		15.1	$	416,361		15.3

________

N/A—Not Applicable

Above market lease intangibles and in-place and other lease intangibles are included in acquired lease intangibles within real estate investments on our Consolidated Balance Sheets. Goodwill and other intangibles (including non-compete agreements, trade names and trademarks) are included in other assets on our Consolidated Balance Sheets. Below market lease intangibles, other lease intangibles and purchase option intangibles are included in accounts payable and other liabilities on our Consolidated Balance Sheets. For the years ended December 31, 2013, 2012 and 2011, our net amortization expense related to these intangibles was $65.2 million, $123.3 million and $62.5 million, respectively. The estimated net amortization expense related to these intangibles for each of the next five years is as follows: 2014—$57.8 million; 2015—$35.0 million; 2016—$24.0 million; 2017—$14.4 million; and 2018—$8.9 million.