Intangible Assets and Goodwill

12 Months Ended

Dec. 31, 2020

Goodwill And Intangible Assets Disclosure [Abstract]

Intangible Assets and Goodwill

6. Intangible Assets and Goodwill

There was no change in the carrying amount of goodwill of continuing operations during the years ended December 31, 2020 or 2019.  At each of December 31, 2020 and December 31, 2019, the gross amount of goodwill of continuing operations totaled $517.0 million, and we had accumulated impairment losses of $182.4 million.

Intangible assets subject to amortization at December 31, 2020 and 2019 consisted of the following:

(In thousands)	Gross Carrying Amount		Accumulated Amortization			Net
Acquired technology	$	1,483	$	(1,483	)		—
Distributor and provider networks		8,709		(8,709	)		—
Total	$	10,192	$	(10,192	)	$	—

As all intangible assets subject to amortization were fully amortized as of December 31, 2016, no amortization was incurred during the years ended December 31, 2020, 2019, and 2018, and no amortization expense is expected over the next five years and thereafter.    

At December 31, 2020 and 2019, intangible assets not subject to amortization consisted of a tradename of $29.0 million.