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Intangible Assets, Net
3 Months Ended
Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets, Net
4. Intangible Assets, Net

 

Intangible assets, net consisted of the following at March 31, 2018 and December 31, 2017: 

 

   March 31,   December 31, 
   2018   2017 
   (unaudited)     
   Gross
Carrying
Amount
   Accumulated
Amortization
   Net
Carrying
Amount
   Gross
Carrying
Amount
   Accumulated
Amortization
   Net
Carrying
Amount
 
Patents  $50,000   $(21,875)  $28,125   $50,000   $(21,250)  $28,750 
Trade names, trademarks product names, URLs   1,555,000    (649,354)   905,646    1,555,000    (585,479)   969,521 
Internally developed software   2,720,000    (2,001,363)   718,637    2,720,000    (1,900,696)   819,304 
Subscriber/customer relationships   4,219,000    (2,442,653)   1,776,347    4,219,000    (2,221,882)   1,997,118 
Lead pool   282,000    (211,500)   70,500    282,000    (176,250)   105,750 
Total intangible assets  $8,826,000   $(5,326,745)  $3,499,255   $8,826,000   $(4,905,557)  $3,920,443 

  

Amortization expense for the three months ended March 31, 2018 was $421,188, as compared to $421,188 for the three months ended March 31, 2017. The estimated aggregate amortization expense for each of the next five years and thereafter will be $1,178,531 in 2018, $1,087,333 in 2019, $592,681 in 2020, $444,167 in 2021 and $196,543 thereafter.