Intangible Assets

6 Months Ended

Jun. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

Intangible Assets

Intangible assets are summarized as follows (in thousands):

	June 30, 2020							December 31, 2019
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Amortized intangible assets
Licenses	$	1,414	$	(1,267	)	$	147	$	1,414	$	(1,200	)	$	214
Patents and know how	9,226		(5,395		)	3,831		9,099		(5,070		)	4,029
Customer and supplier relationships	3,761		(2,552		)	1,209		3,761		(2,417		)	1,344
Non-compete agreements	120		(83		)	37		120		(68		)	52
Total amortized intangible assets	$	14,521	$	(9,297	)	$	5,224	$	14,394	$	(8,755	)	$	5,639
Unamortized intangible assets
Trade names and trademarks	$	1,008				$	1,008	$	1,008				$	1,008
Patents in process	1,154					1,154		1,130					1,130
Total intangible assets	$	16,683				$	7,386	$	16,532				$	7,777

Amortization expense for the three and six months ended June 30, 2020 and 2019, was $0.3 million and $0.5 million, respectively. Patents and patents in process related write-downs due to abandonment for the three and six months ended June 30, 2019 was $0.0 million and $0.8 million, respectively. These write-down were recorded as a component of Selling, general and administrative expense. The Company incurred impairment losses related to customer relationships which were determined to be unrecoverable of $0.0 million and $0.5 million for the three and six months ended June 30, 2019, respectively. There were no impairments or write-downs due to abandonments during the three or six months ended June 30, 2020.

Expected future amortization of intangible assets as of June 30, 2020, is as follows (in thousands):

Year ending December 31,	Estimated Amortization Expense
2020 (excluding the six months ended June 30, 2020)	$	544
2021	1,023
2022	921
2023	921
2024	921
Thereafter	894
	$	5,224