Included within Other expenses are the following (in thousands):



	Year Ended November 30,
	2016		2015			2014
Bad debt provision (1)	$	7,365	$	(396	)	$	55,355
Goodwill impairment (2)	—		—			54,000
Intangible assets amortization and impairment (3)	13,328		13,487			20,569


(1)	During the year ended November 30, 2015, we released $4.4 million in reserves related to the resolution of bankruptcy claims against Lehman Brothers Holdings, Inc. During the fourth quarter of 2014, we recognized a bad debt provision, which primarily relates to a receivable of $52.3 million from a client to which we provided futures clearing and execution services, which declared bankruptcy.


(2)	Goodwill impairment losses of $51.9 million and $2.1 million at November 30, 2014 were recognized in the Futures and International Asset Management reporting units at November 30, 2014, respectively. (See Note 10, Goodwill and Other Intangible Assets for further information.)

(3)

The amounts for the years ended November 30, 2016 and 2015 both include an impairment loss of $1.3 million on certain exchange memberships. The amount for the year ended November 30, 2014 includes impairment losses at November 30, 2014 of $7.5 million and $0.1 million in the Futures business and the International Asset Management business, respectively. (See Note 10, Goodwill and Other Intangible Assets for further information.)