DEFERRED FINANCING AND LEASING COSTS

Deferred financing and leasing costs were comprised of the following as of December 31, 2017 and 2016 (in thousands):



	December 31,
	2017		2016
Deferred financing costs	$	17,044	$	11,917
Deferred leasing costs	198,767		179,161
Market value intangible	18,802		19,451
Origination value intangible	90,116		83,485
	324,729		294,014
Accumulated amortization:
Deferred financing costs	11,002		10,152
Deferred leasing costs	80,434		70,842
Market value intangible	14,324		12,625
Origination value intangible	59,719		53,357
	165,479		146,976
Deferred financing and leasing costs, net	$	159,250	$	147,038

Amortization of deferred financing costs was $3.8 million, $4.0 million and $4.4 million for the years ended December 31, 2017, 2016 and 2015, respectively. Amortization of deferred leasing costs and origination value intangible was $31.6 million, $37.1 million and $44.2 million for the years ended December 31, 2017, 2016 and 2015, respectively.

As of December 31, 2017, the remaining weighted-average amortization period was 3.2 years for market value intangible and 5.5 years for origination value intangible.

The table above includes market value intangible assets. There were also $9.6 million and $4.4 million of unamortized market value intangible liabilities as of December 31, 2017 and 2016, respectively. These liabilities are included as other liabilities in the accompanying consolidated balance sheets of the Company. Amortization of the aggregate asset and liability for market value intangible was an expense of $1.3 million, $1.6 million and $1.9 million for the years ended December 31, 2017, 2016, and 2015, respectively. These amounts were included as a decrease in rental revenue in the accompanying consolidated statements of comprehensive income.

The aggregate amortization of net market value intangible assets and liabilities is a decrease (increase) in rental revenue over the next five years and thereafter as follows (in thousands):



2018	$	242
2019	(265		)
2020	(858		)
2021	(891		)
2022	(762		)
Thereafter	(2,637		)
Total	$	(5,171	)

The aggregate amortization expense for origination value intangible asset for the next five years and thereafter is as follows (in thousands):



2018	$	9,748
2019	6,437
2020	3,664
2021	2,839
2022	2,158
Thereafter	5,551
Total	$	30,397