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Intangible Assets
3 Months Ended
Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets Intangible Assets
Our intangible assets consist of the following:

March 31,
2020
December 31, 2019
(in thousands)
Intellectual property$700  $700  
Less: Accumulated amortization(487) (428) 
       Total, net$213  $272  

Amortization expense recorded in cost of sales is as follows:

  Three months ended
 March 31,
2020
March 31,
2019
(in thousands)
Amortization expense$59  $59