Note 5. Intangible Assets

GMP Vision Solutions intangible asset

In January 2007, the Company entered into an agreement (the Original GMP Agreement) with GMP Vision Solutions, Inc. (GMP) to acquire certain in‑process research and development in exchange for periodic royalty payments equal to a single‑digit percentage of revenues received for royalty‑bearing products and periodic royalty payments at a higher royalty rate applied to all amounts received in connection with the grant of licenses or sub-licenses of the related intellectual property.

In November 2013, the Company entered into an amended agreement with GMP in which remaining royalties payable to GMP (the Buyout Agreement) were canceled in exchange for the issuance of $17.5 million in promissory notes payable to GMP and a party related to GMP.

The Company concluded that the $17.5 million transaction represented the purchase of an intangible asset. The Company estimated a useful life of five years over which the intangible asset is being amortized to cost of sales in the accompanying statements of operations, which amortization period was determined after consideration of the projected outgoing royalty payment stream had the Buyout Agreement not occurred, and the remaining life of the patents obtained in the Original GMP Agreement. After determining that the pattern of future cash flows associated with this intangible asset could not be reliably estimated with a high level of precision, the Company concluded that the intangible asset will be amortized on a straight‑line basis over the estimated useful life. For the year ended December 31, 2018, the amortization expense was $3.0 million and the intangible asset has been fully amortized. The amortization expense was $3.5 million during each of the years ended December 31, 2017 and December 31, 2016.

Other intangible assets

The Company entered into agreements with international distributors pursuant to which their distribution rights with the Company were terminated effective as of December 31, 2015. As part of the agreements the distributors agreed to provide certain services to, and not compete with, the Company for one-to-two years in exchange for payments calculated based on single-digit percentages of the Company’s future revenues in those years in the respective countries that had comprised the distributors’ territories. Management recorded the estimated fair value of the non-compete provisions as intangible assets. For the years ended December 31, 2018 and December 31, 2017, the Company recorded amortization expense related to the non-compete provisions of approximately $0.2 million and $0.3 million, respectively. As of December 31, 2018, the non-compete intangible assets were fully amortized.

The following reflects the composition of intangible assets, net (in thousands):


	December 31,		December 31,
	2018		2017

GMP royalty buyout	$	17,500	$	17,500
Non-compete agreements		341		524
		17,841		18,024
Accumulated amortization		(17,841)		(14,877)
Total	$	—	$	3,147
Weighted average amortization period (in months)		60		60