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Deferred Revenue and Remaining Performance Obligations (Tables)
 12 Months Ended
Dec. 31, 2020
Deferred Revenue Disclosure [Abstract]  
Deferred Revenue and Income Summary A summary of the balances as of December 31 follows (in thousands):
20202019
Products and services not yet delivered$376 $271 
Deferred revenue$376 $271 
The following presents total net sales by line of business for the years ended December 31 (in thousands):

202020192018
Accelerate Pheno revenue$11,025 $9,132 $5,547 
Other revenue140 165 123 
Net sales$11,165 $9,297 $5,670 
The following presents total net sales by products and services for the years ended December 31 (in thousands):

202020192018
Products$10,336 $8,839 $5,576 
Services829 458 94 
Net sales$11,165 $9,297 $5,670