Intangible Assets Other Than Goodwill (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Goodwill [Table Text Block]

Intangible assets other than goodwill consist primarily of licenses, product lines, customer relationships and trademarks. Amortized intangible assets are included in intangibles in the accompanying consolidated balance sheets. Trademarks are disclosed separately in the accompanying consolidated balance sheets. Intangible assets are as follows (in thousands, except for weighted useful lives):

		December 31, 2020							December 31, 2019
	Weighted Useful Lives	Gross Carrying Amount		Accumulated Amortization			Net Amount		Gross Carrying Amount		Accumulated Amortization			Net Amount
	(Years)
Amortized Intangible Assets:
Licenses	5.81	$	20,130	$	(20,130	)	$	—	$	20,130	$	(19,988	)	$	142
Product lines	10.36		33,858		(31,827	)		2,031		33,858		(30,812	)		3,046
Customer relationships	4.90		3,152		(3,152	)		—		3,152		(3,152	)		—
Trade names	5.00		3,000		(3,000	)		—		3,000		(3,000	)		—
Non-compete agreements	5.00		200		(200	)		—		200		(200	)		—
Total amortized intangible assets		$	60,340	$	(58,309	)	$	2,031	$	60,340	$	(57,152	)	$	3,188
Unamortized Intangible Assets:
Trademarks		$	300	$	—		$	300	$	300	$	—		$	300

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

For the year ended December 31, 2020, 2019 and 2018, the Company’s aggregate amortization expense related to intangible assets was $1.2 million, $4.7 million and $4.9 million, respectively. The Company currently estimates continuing future amortization expense to be approximately (in thousands):

2021	$	1,015
2022		1,016
	$	2,031