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Intangible Assets
6 Months Ended
Jun. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets Intangible Assets
The following table presents the components of net intangible assets (in thousands):
As of June 30, 2021As of December 31, 2020
Gross Carrying AmountAccumulated AmortizationNet Carrying AmountGross Carrying AmountAccumulated AmortizationNet Carrying Amount
Oblong (formerly Glowpoint)
Affiliate network$994 $(769)$225 $994 $(735)$259 
Oblong Industries
Developed technology$10,060 $(3,528)$6,532 $10,060 $(2,520)$7,540 
Trade names2,410 (422)1,988 2,410 (302)2,108 
Distributor relationships310 (109)201 310 (77)233 
   Subtotal12,780 (4,059)8,721 12,780 (2,899)9,881 
      Total$13,774 $(4,828)$8,946 $13,774 $(3,634)$10,140 

At each reporting period, we determine if there was a triggering event that may result in an impairment of our intangible assets. During the three months ended March 31, 2021, we considered the decline in revenue for Oblong Industries to be a triggering event for a recoverability test of intangible assets for this reporting unit. Based on the corresponding recoverability test of Oblong Industries’ intangible assets, we determined no impairment changes were required for the three months ended March 31, 2021. During the three months ended June 30, 2021, we did not identify a triggering event, therefore no impairment charges were required for the three months ended June 30, 2021. Intangible assets with finite lives are amortized using the straight-line method over the estimated economic lives of the assets, which range from five years to twelve years in accordance with ASC Topic 350.

The weighted average economic lives for the components of intangible assets are as follows:
Oblong (formerly Glowpoint)
Affiliate network12 years
Oblong Industries
Developed technology5 years
Trade names10 years
Distributor relationships5 years

Related amortization expense was $597,000, $1,194,000, $613,000, and $1,224,000 for the three and six months ended June 30, 2021 and 2020, respectively.

Amortization expense for each of the next five succeeding years will be as follows (in thousands):

Remainder of 2021$1,194 
20222,385 
20232,378 
20241,844 
2025241 
Thereafter904 
Total $8,946