Intangible assets

3 Months Ended

Jan. 31, 2020

Intangible assets

Intangible assets

Note 11 - Intangible assets

Intangible assets consist of the following (in thousands):

	January 31, 2020		October 31, 2019
Amortizable intangible assets:
Non-compete agreement (estimated life 5 years)	$	423	$	200
Accumulated amortization		(211)		(200)
		212		—
Customer relationships (estimated lives 7 - 15 years)	$	5,058	$	2,879
Accumulated amortization		(2,005)		(1,884)
		3,053		995
Backlog (estimated life 1 - 2 years)		287		134
Accumulated amortization		(167)		(134)
		120		—
Patents (estimated life 10 - 14 years)		368		142
Accumulated amortization		(53)		(45)
		315		97
Totals	$	3,700	$	1,092
Non-amortizable intangible assets:
Trademarks	$	1,174	$	657

Amortization expense for the three months ended January 31, 2020 and the year ended October 31, 2019 was $173,000 and $275,000, respectively. As of January 31, 2020, the weighted-average amortization period for the amortizable intangible assets is 8.39 years.