7.	Other Assets and Other Liabilities

Our other assets consisted of the following, net of amortization and depreciation, if applicable, at December 31 (in thousands):


	2014		2013
Leasing commissions	$	241,557	$	222,267
Rent leveling and above market leases		224,589		256,018
Derivative assets		106,664		20,241
Prepaid assets		105,093		136,729
Fixed assets		86,927		85,389
Value added taxes receivable		86,331		106,074
Loan fees		53,025		49,920
Management contracts		52,896		61,082
Other notes receivable		46,570		38,860
Deferred income taxes		7,887		19,020
Other		84,525		99,863

Totals	$	1,096,064	$	1,095,463

Our other liabilities consisted of the following, net of amortization, if applicable, at December 31 (in thousands):


	2014		2013
Tenant security deposits	$	169,326	$	191,070
Income tax liabilities		85,200		184,888
Unearned rents		74,873		64,156
Derivative liabilities		52,740		77,018
Below market leases		30,651		30,031
Deferred income		16,326		39,565
Value added taxes payable		13,358		57,260
Environmental		10,878		16,926
Other		173,074		159,731

Totals	$	626,426	$	820,645

The expected future amortization of leasing commissions into rental expense of $241.6 million is summarized in the table below. We also expect our above and below market leases and rent leveling net assets, which total $193.9 million at December 31, 2014, to be amortized into rental income as follows (in thousands):


	Amortization Expense		Net Charge to Rental Income
2015	$	69,815	$	10,678
2016		55,330		22,322
2017		41,783		25,152
2018		25,342		23,843
2019		15,531		20,413
Thereafter		33,756		91,530

Totals	$	241,557	$	193,938