INTANGIBLE AND OTHER NON-CURRENT ASSETS

Intangible and other non-current assets at December 31, 2018 and 2019 are as follows (in thousands):



	December 31, 2018		December 31, 2019
Prepaid agreements not-to-compete, net of accumulated amortization of $6,672 and $7,195, respectively	$	4,048	$	3,915
Tradenames	17,635		25,233
Capitalized commissions on preneed contracts, net of accumulated amortization of $599 and $1,127, respectively	2,717		2,818
Other	25		150
Intangible and other non-current assets	$	24,425	$	32,116

Prepaid agreements not-to-compete are amortized over the term of the respective agreements, ranging generally from one to ten years. Amortization expense was approximately $0.6 million, $0.6 million and $0.7 million for the years ended December 31, 2017, 2018 and 2019, respectively. During the years ended December 31, 2018 and 2019, we increased prepaid agreements not-to-compete by $0.8 million and $0.4 million related to our 2018 and 2019 acquisitions described in Note 3 to the Consolidated Financial Statements included herein.

Our tradenames have indefinite lives and therefore are not amortized. During the years ended December 31, 2018 and 2019, we increased tradenames by $3.3 million and $7.8 million related to our 2018 and 2019 acquisitions described in Note 3 to the Consolidated Financial Statements included herein. During 2019, we recorded an impairment to tradenames of $0.2 million as a result of our 2019 annual impairment test as the carrying amount of certain tradenames exceeded the fair value. We did not record an impairment to tradenames in the year ended December 31, 2018. See Note 1 to the Consolidated Financial Statements included herein, for a discussion of the methodology used for our annual indefinite-lived intangible asset impairment test.

We capitalize our selling costs related to preneed cemetery merchandise and services and preneed funeral trust contracts. These costs are amortized on a straight-line basis over the average maturity period for our preneed cemetery merchandise and services contracts and preneed funeral trust contracts, of eight and ten years, respectively. Prior to our adoption of ASC 606 on January 1, 2018, these costs were expensed in the period incurred. Amortization expense totaled $0.6 million for both the years ended December 31, 2018 and 2019.

On September 30, 2018, our management agreement with a Florida municipality expired and as a result, we ceased to operate three of our cemetery businesses. We recorded a loss of approximately $125,000 in Other, net, for the write-off of capitalized commissions related to these three cemetery businesses. There were no impairment losses recognized for the year ended December 31, 2019. See Note 5 to the Consolidated Financial Statements included herein for additional information regarding the expired management agreement for these three cemetery businesses.