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Basis of Presentation and Significant Accounting Policies (Tables)
3 Months Ended
Mar. 31, 2020
Revenues Disaggregated by Major Good or Service Line, Timing of Revenue Recognition, and Sales Channel, Reconciled to Our Reportable Segments
The following tables presents our revenues disaggregated by major good or service line, timing of revenue recognition, and sales channel, reconciled to our reportable segments (in thousands).
 
   
Three months ended March 31, 2020
 
   
Reportable Segments
     
   
Detection
   
Therapy
   
Total
 
Major Goods/Service Lines
      
Products
  $3,100   $1,346   $4,446 
Service contracts
   1,347    347    1,694 
Supply and source usage agreements
   —      371    371 
Professional services
   —      11    11 
Other
   29    —      29 
  
 
 
   
 
 
   
 
 
 
  $4,476   $2,075   $6,551 
  
 
 
   
 
 
   
 
 
 
Timing of Revenue Recognition
      
Goods transferred at a point in time
  $3,129   $1,383   $4,512 
Services transferred over time
   1,347    692    2,039 
  
 
 
   
 
 
   
 
 
 
  $4,476   $2,075   $6,551 
  
 
 
   
 
 
   
 
 
 
Sales Channels
      
Direct sales force
  $2,172   $1,469   $3,641 
OEM partners
   2,304    —      2,304 
Channel partners
   —      606    606 
  
 
 
   
 
 
   
 
 
 
  $4,476   $2,075   $6,551 
  
 
 
   
 
 
   
 
 
 
 
   
Three months ended March 31, 2019
 
   
Reportable Segments
     
   
Detection
   
Therapy
   
Total
 
Major Goods/Service Lines
      
Products
  $2,790   $1,519   $4,309 
Service contracts
   1,322    516    1,838 
Supply and source usage agreements
   —      537    537 
Professional services
   —      33    33 
Other
   56    —      56 
  
 
 
   
 
 
   
 
 
 
  $4,168   $2,605   $6,773 
  
 
 
   
 
 
   
 
 
 
Timing of Revenue Recognition
      
Goods transferred at a point in time
  $2,790   $1,632   $4,422 
Services transferred over time
   1,378    973    2,351 
  
 
 
   
 
 
   
 
 
 
  $4,168   $2,605   $6,773 
  
 
 
   
 
 
   
 
 
 
Sales Channels
      
Direct sales force
  $2,057   $1,812   $3,869 
OEM partners
   2,111    —      2,111 
Channel partners
   —      793    793 
  
 
 
   
 
 
   
 
 
 
  $4,168   $2,605   $6,773 
  
 
 
   
 
 
   
 
 
 
Summary of Receivables, Contract Assets and Contract Liabilities from Contracts with Customers The following table provides information about receivables, contract assets, and contract liabilities from contracts with customers (in thousands).
Contract balances
 
   
Balance at
March 31, 2020
 
Receivables, which are included in ‘Trade accounts receivable’
  $7,090 
Contract assets, which are included in “Prepaid and other current assets”
   14 
Contract liabilities, which are included in “Deferred revenue”
   5,491 
Summary of Changes in Deferred Revenue
Changes in deferred revenue from contracts with customers were as follows (in thousands):
 
   
Three Months Ended

March 31, 2020
 
Balance at beginning of period
  $5,604 
Deferral of revenue
   2,226 
Recognition of deferred revenue
   (2,339
  
 
 
 
Balance at end of period
  $5,491 
  
 
 
 
Accounting Standards Update 2016-02 [Member]  
Summary of Changes in Deferred Revenue
The balance of deferred revenue at March 31, 2020 and December 31, 2019 is as follows (in thousands):
Contract liabilities
 
 
  
March 31, 2020
 
  
December 31, 2019
 
Short term
  
$
5,259
 
  
$
5,248
 
Long term
  
 
232
 
  
 
356
 
 
  
 
 
 
  
 
 
 
Total
  
$
5,491
 
  
$
5,604